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Lexus RX price reduction news in Huai’an, the latest offer 375,000! Discounts wait for no one

On Autohome Huai’an Promotion Channel, we bring you the latest model price reduction information. At present, this luxury SUV is attracting consumers with 30,000 high discounts, and the minimum starting price has been reduced to 375,000 yuan. This is a rare opportunity, if you are interested in the Lexus RX, don’t miss it. Click "Check the car price" in the quotation form now to seize this car purchase opportunity and get a higher discount margin.

淮安地区雷克萨斯RX降价消息，最新报价37.5万！优惠不等人

The exterior design of the Lexus RX is like a delicate work of art, showing the perfect fusion of luxury and dynamism. The front part of its face adopts the family’s signature spindle design, and the air intake grille is as delicate as diamond cutting, showing the unique brand charm of Lexus. The overall style is smooth and powerful, showing both the elegance of a luxury car and the fortitude of a sporty SUV. Every detail highlights Lexus’s dedication to quality and design.

淮安地区雷克萨斯RX降价消息，最新报价37.5万！优惠不等人

The Lexus RX combines elegance and power with its refined side design. The body size is 4890mm*1920mm*1695mm and the wheelbase reaches 2850mm, ensuring a spacious interior space and good driving stability. The side lines are smooth and dynamic, and the tire specifications of the 235/60 R19 not only improve the handling performance, but also add visual tension. The unique style of the rims further enhances the luxurious temperament of the RX model.

淮安地区雷克萨斯RX降价消息，最新报价37.5万！优惠不等人

The interior of the Lexus RX is refined and comfortable, with a classic luxury design style. The steering wheel is made of genuine leather, providing an excellent grip, supporting electric up and down + front and rear adjustment, ensuring that the driver can adjust to the most comfortable position according to personal needs. Equipped with a large 9.8-inch screen on the center console, the display is clear and easy to operate. It integrates various functions such as multimedia system, navigation, phone and air conditioning, making it easy for drivers and passengers to control information at any time.

In terms of seats, the RX is equipped with imitation leather seats, and the seat cushions and backrests have been carefully designed to provide good support and comfort. Both the main and passenger seats support front and rear adjustment, backrest adjustment, high and low adjustment, and waist support to ensure the comfort of long-distance driving. The second row of seats also has backrest adjustment function, providing enough space and flexibility. At the same time, the rear seats support proportional reclining, providing convenience for loading needs. The overall interior layout not only shows the sense of luxury, but also focuses on practicality and humanization.

淮安地区雷克萨斯RX降价消息，最新报价37.5万！优惠不等人

The Lexus RX is powered by a 2.5L four-cylinder engine with a maximum power of 139 kilowatts and a maximum torque of 241 Nm. The engine produces 189 horsepower and is paired with an advanced E-CVT continuously variable transmission to provide a smooth and efficient driving experience.

Overall, the Autohome owner is full of praise for the exterior design of the Lexus RX. He particularly appreciates its sideways sports and noble design, as well as the unique large-size wheels and tough lines, which together shape the strong personality of the RX. The visual impact brought by the front spindle net that the owner emphasizes undoubtedly reinforces his satisfaction with its appearance. For consumers seeking unique style and quality, the Lexus RX is undoubtedly an option worth considering.

Volvo is on the rise again, with large space and low price.

The power is valuable, and the face value is higher. If it is the price, both can be thrown. I’ll bring this one to you today. So whether this car is a mule or a horse, let’s take a look at its actual performance.

Let’s take a look at the appearance of the Volvo XC60. The front face of the Volvo XC60 looks very cold as a whole, and the air intake grille has a straight waterfall design, which looks more atmospheric. Coupled with the simple headlights, the visual effect is very eye-catching. The car is equipped with LED daytime running lights, automatic opening and closing, delayed closing and so on. Come to the car side, the car body size is 4708MM*1902MM*1660MM, the car uses exquisite lines, the car side gives people a very lovely feeling, with large-size thick-walled tires, leaving people with a very fashionable and simple feeling. Looking back, the overall shape of Volvo XC60′ s tail echoes the front of the car, and the taillights look very fashionable and sporty. Coupled with the unique exhaust pipe, the overall shape is still very attractive.

In terms of interior, the interior presents an exquisite design style, which makes people feel very delicate. The steering wheel of the car is very in line with the interior style, and it is made of genuine leather, showing a sense of atmosphere. Take a look at the central control, and decorate it with a 9-inch central control screen, which makes the interior design quite layered and has a certain sense of science and technology. Finally, let’s look at the dashboard and seats. The dashboard design is remarkable, and the trendy design elements make people remember it at a glance. The car uses a leather/fabric mixed seat, which is wide and thick and comfortable.

The car is equipped with car networking, driving mode selection, remote control key, rear wiper, engine start-stop and other configurations, which fully ensures the convenience and comfort of the car experience.

This class of cars can often give consideration to both cost performance and practicality, and is often considered by most consumers as the first choice when buying a car. If you are interested in it, you might as well learn more about it!

The bigger the screen, the better. The best 5-inch screen mobile phone is recommended.

Product:MX3 (China Unicom 3G) Meizu cell phone

　　　　With intelligencecell phoneWith the development of mobile phones, the screen of mobile phones is now getting bigger and bigger, from the previous 3.5 to the current largestSeven inches.This also brings a big problem. First of all, it is the battery life of the mobile phone. The larger the screen, the more power it consumes, so we need a larger battery to provide power. In addition, it is still inconvenient to carry. After all, our mobile phones are for the convenience of our lives, and the super-large screen will have a relatively large body weight. Most of the mobile phones currently on the market are still in5 inchesLeft and right, this is also a screen size that is convenient to operate with one hand, and it is also relatively balanced in terms of battery life and body size design. Here are a few mobile phones with the best screen display at the 5-inch level.

The bigger the screen, the better. The best 5-inch screen mobile phone is recommended.

5.2 inches:LG G2

　　　　The LG G2 is a mobile phone that is very suitable for one-handed operation. The back button design is used in the body design, which is the first time in the mobile phone. The back button design can also make the side of the mobile phone look more simple, and it can also improve the screen ratio, making the appearance of the mobile phone more atmospheric. But this kind of loading also needs to be used for a period of time after purchase. After all, it is different from previous habits. The 5.2-inch screen design of the machine and the ultra-narrow border also have a good one-handed operation experience.

The picture shows the LG G2.

　　　　The LG G2 is equipped with a 5.2-inch IPS display screen with a resolution of 1920X1080 pixels, and the display effect is particularly clear. On the hardware, the machine also uses the mainstream 2.3GHz Snapdragon 800 series processor, as well as the memory combination of 2GB RAM + 16GB ROM, running the latest Android 4.4 version of the operating system. In terms of taking pictures, the machine is also equipped with 13 million pixel main lens, and supports optical image stabilization, and its corresponding 2.10 million pixel front lens.

The picture shows the LG G2.

Editor’s comment:

　　　　LG G2 is a very good flagship phone. In addition to the back button design, the biggest highlight of this machine is also equipped with the latest Android 4.4 version of the operating system on the system. insoftwareA variety of applications are configured to enhance one-handed operation capabilities, and KnockOn is a common double-click to light the screen; LG’s unique multi-tasking function, Qslide, realizes multi-tasking through small window translucency; and the machine can also support the control of LG series smart TVs at home.

LG G2 (licensed)
[Reference price] 2699 yuan
[Sales merchant] JD.com mall
[Related Links]　http://item.jd.com/970602.html

Product:GALAXY S5 (G9006V/Unicom 4G) Samsung cell phone

5.1 inchesWhat is it?SAMSUNG GALAXY S5

　　　　SamsungGALAXY S5It’s a brand new flagship from Samsung.cell phoneThe fingerprint recognition system and the three-proof function of the machine are very practical, and the heart rate detection is even better in the S health function. We can use our mobile phone to detect our physical health at all times, making the mobile phone function richer, and the machine is equipped with a 5.1-inch screen on the screenSamsung Galaxy S4Only 0.1 inches larger, the overall operating experience is outstanding.

The bigger the screen, the better. The best 5-inch screen mobile phone is recommended.
Pictured, SamsungGALAXY S5

　　　　SamsungGALAXY S5It uses a 5.1-inch FHD Super AMOLED display with a resolution of 1920X1080 pixels, and the display effect is excellent. In terms of processor, the machine is also equipped with a 2.5GHz Snapdragon 801 quad-core processor, as well as a combination of 2GB RAM + 16GB ROM memory, and the overall performance is excellent. And in the photo, the machine is equipped with an ISOCELL sensor16 million pixelsSuper lens, including LED fill light, strong camera strength.

Pictured, SamsungGALAXY S5

Editor’s comment:

　　　　SamsungGALAXY S5The fingerprint recognition function installed this time is also very excellent, and the fingerprint recognition of this machine is not usedApple iPhone 5s　The physical buttons like the HOME key were embedded in the screen above the HOME key. Besides the unlocking function, the fingerprint recognition function of the machine could also be used for secure payment, setting private privacy, etc., which performed very well. The IP67-level dustproof and waterproof function of the machine was also very practical.

China Unicom 4GSamsung S5　G9006V (licensed)

[Preferential price]　4460Yuan

[Promotional Merchant]Z.CN　　

Product:MX3 (China Unicom 3G) Meizu cell phone

5.1 inches: MeizuMX3

　　　　Meizu is domesticcell phoneA very good brand, Meizu has always insisted on the best quality-focused strategy, so that Meizu’s mobile phone models are not many, but each mobile phone is carefully designed. MeizuMX3It is the latest product of Meizu, which is equipped with a unique 15:9 ratio 5.1-inch touch screen, which is very recognizable in appearance. At present, the machine has also launched a new "Silver Wing Edition" to perform even better.

The bigger the screen, the better. The best 5-inch screen mobile phone is recommended.
Pictured here, MeizuMX3

　　　　MeizuMX3The front uses a 5.1-inch high definition display with New Mode 2 technology, the resolution reaches the ultra-high specification of 1800X1080 pixels for the first time, and the pixel density reaches 415PPI. In the core, it uses a 28nm process Exynos 5410 intelligent "8-core" processor, as well as 2GB RAM low-power random access memory, and has 16GB ROM storage space. In addition, the most powerful camera link of this machine uses the latest 8 million pixel back-lit lens, supports 20 frames/second continuous shooting, and its photosensitive pixel side length reaches 1.4 μm, which makes the imaging performance very outstanding.

Pictured here, MeizuMX3

Editor’s comment:

　　　　MeizuMX3The hardware configuration is very good, and the machine pays more attention to the innovation of the system, the new Flyme 3.0 system also configures more functions for the machine, "sidebar gesture" and the most one-handed operation style "pull-down hover" and so on are very practical, and the machine 8 million pixel lens configuration, supports up to 20 frames/second continuous shooting, but also allows users not to let go of every wonderful moment.

MeizuMX3(Licensed goods)
[Reference quotation] 1799 yuan
[Sales merchant] Meizu official website
[Customer Service Tel] 400-788-3333

Product:One M8 (M8t/Mobile 4G) HTC cell phone

5.0 inchesWhat is it?HTC One M8

　　　　HTC　One M8It is a new flagship product released by HTC this year. The machine still uses a metal shell design. The hardware configuration uses the most powerful Snapdragon 801 processor at present, which can fully support 4G mode. In addition, the machine is also equipped with a dual-lens configuration in terms of camera lenses. The depth-of-field lens is used to record spatial information, that is, the three-dimensional spatial data within the current camera viewing range, and it can also realize the function of "taking pictures first and then focusing".

The bigger the screen, the better. The best 5-inch screen mobile phone is recommended.
The picture shows HTC　One M8

　　　　HTC　One M8Designed with metal wire drawing process, the exquisite fuselage is sturdy and durable. The fuselage is equipped with5 inchesThe full high definition display screen, and there are dual front stereo speakers, with shocking music playback effect. The built-in Snapdragon 801 processor is used, the main frequency is up to 2.5GHz, the fuselage is equipped with 2GB random access memory, equipped with the latest Android 4.4 operating system and Sense UI. In terms of taking pictures, a new generation of UltraPixel cameras are used, and there are dual-lens 3D stereo cameras, which are extremely stunning.

The picture shows HTC　One M8

Editor’s comment:

　　　　HTC　One M8In addition to the tougher and more stable appearance design, the hardware configuration is also very strong. What’s more worth mentioning is the camera function of the machine. In addition to the new generation of UltraPixel cameras, a depth of field lens is also added, which can achieve more effects during the shooting process. At the same time, the machine also has a large number of camera modes to choose from, such as camera, video, Zoe dynamic photo, selfie, dual-shot mode and HTC 360-degree panoramic shooting, etc.

Mobile 4G HTC　One M8T (licensed goods with invoice)
[Reference price] 4459 yuan
[Sales merchant] Thumb Mall
[Sales phone] 010-82536899 010-82536899 18910073101
[Business address] DB218B, Zhongguancun Science and Trade Office Building, Haidian District, Beijing

Product:Ascend P7 (Unicom 4G) Huawei cell phone

5.0 inchesWhat is it?Huawei Ascend P7　

　　　　HuaweiAscend P7The previous Huawei P series still used in appearancecell phoneAppearance design, but the frame of the fuselage adopts double C chamfer design, and the back adopts glass panel design, the overall design is stronger. The hardware also uses a new HiSilicon processor, the processing performance has been improved a lot, and the 13 million + 8 million pixel lens configuration, compared with the previousHuawei Ascend P6It has really improved a lot, and it is even more commendable to make the machine have ten-level skin beauty functions.

The bigger the screen, the better. The best 5-inch screen mobile phone is recommended.
Pictured, HuaweiAscend P7

　　　　HuaweiAscend P7Upgraded on the screen to5 inchesThe full high definition display produced by JDI has a resolution of 1920X1080 pixels FHD level, and the display effect is very delicate. In the core, the machine is equipped with a 1.8GHz HiSilicon Kirin 910T quad-core processor, and a memory combination of 2GB RAM + 16GB ROM, which runs smoothly based on the Android 4.4 system Emotion UI 2.3 user interface. In terms of photography, the machine is equipped with 13 million pixelsSonySuper lens, and its corresponding 8 million pixel ultra-wide-angle front lens, excellent camera strength.

Pictured, HuaweiAscend P7

Editor’s comment:

　　　　HuaweiAscend P7As Huawei’s latest flagship mobile phone, the machine can also support 4G mode. The machine has been comprehensively upgraded in terms of hardware flat configuration, especially its improvement in photography is more obvious, 13 million pixel Sony rear lens will also be the standard of the current flagship mobile phone, and 8 million pixel front lens is equipped with the machine has great advantages in selfie function, coupled with the machine’s tenth-level skin beauty function, I believe the machine will get more like selfie friends like.

HuaweiAscend P7(Licensed goods)
[ReferencePrice] 2750 yuan　
[SalesMerchant] Leku Smartphone Network (City Delivery)
[Business phone] 010-56021755 18511716213
[Store address] 6C-75, Zhongguancun Science and Trade Electronic City, Haidian District, Beijing

Product:MUSE (M2) Cool Doo cell phone

5.0 inches: Cool DooMUSE2

　　　　Cool DooMUSE2 is a great entertainmentcell phoneIn addition, the machine also supports the most popular 4G mode at present. The machine still focuses on the youthful and fashionable style, especially the 7.9mm slim body design is already the leader in the current 4G smartphones on the market. The Qualcomm professional audio decoding chip WCD9306 and the original earphone configuration of the machine are equipped with excellent hearing feast, plus support for 1080Pvideo playbackThe overall audio-visual effect is even better.

The bigger the screen, the better. The best 5-inch screen mobile phone is recommended.
Pictured, Cool DooMUSE2

　　　　Cool DooMUSE2 The integrated design is adopted in appearance. On the screen end, the machine is equipped with5 inchesThe IPS display screen has a resolution of 1280×720 pixels, and the display effect is good. In terms of core hardware, the machine is equipped with a 1.2GHz frequency Qualcomm MSM8926 quad-core processor, as well as a combination of 1GB RAM + 16GB ROM memory. In terms of taking pictures, 5 million pixel front lens and 8 million pixel rear camera are matched, which also brings satisfactory camera effects. At the same time, the machine also supports TD-LTE/TD-SCDMA/GSM three network standards.

Pictured, Cool DooMUSE2

Editor’s comment:

　　　　Cool DooMUSE2 In addition to the fashionable and youthful design in appearance, the system is equipped with a deeply customized dido OS based on Android 4.3. The system is very simple and clean in the optimization of the entire operating interface, and there are many gesture functions, such as double-click to light the screen, swipe down to turn on the camera, C gesture dialing, M gesture openingMusic PlayerAnd so on, while also supporting a variety of custom operations, leaving young people with more freedom to operate.

Cool DooMUSE2 (licensed goods)
[Reference price] 1599 yuan　
[Sales Merchant] Shenzhen Longgang Gome Shuanglong Store
[Sales address] Directly opposite Exit A of Shuanglong Metro Station, Longgang, Shenzhen
[Contact number] 15012768810

Product:Nubia Z5S (full Netcom) nubia cell phone

5.0 inchesWhat is it?nubia Z5s

　　　　nubiaZ5sA very good one launched by the Nubian brandcell phoneThe integrated body design used in the appearance of the machine, as well as the classic Nubia red circle Home button, and in terms of hardware configuration, the Snapdragon 800 processor is also the mainstream flagship level, more worthy of attention or the machine still continues the Nubia "three network eat" concept, TD-SCDMA+WCDMA+CDMA2000 network full support to provide users with great convenience.

The bigger the screen, the better. The best 5-inch screen mobile phone is recommended.
Pictured here, NubiaZ5s

　　　　nubiaZ5sWith very strong performance, it is equipped with a powerful Snapdragon 800 quad-core processor, the main frequency reaches 2.3GHz, and there is 2GB of random access memory, equipped with Android intelligent operating system. On the fuselage, the machine is equipped with a 5.0-inch capacitive touch screen with a resolution of 1920×1080 pixels, reaching the level of full high definition FHD. A 13 million pixel camera is set on the back of the fuselage, with a large aperture of F2.2, and the front lens is 5 million pixels. It has a variety of beauty selfie functions, and the image quality is very clear.

Pictured here, NubiaZ5s

Editor’s comment:

　　　　The Nubia brand is a high-end brand under ZTE, and the brand will pay more attention to user experience improvement and functional innovation. At the same time, in the currentNubian mobile phoneMost of them can support full Netcom functions. and nubiaZ5sIn addition to supporting full Netcom, it also has a very good performance in taking pictures. The 13 million pixel lens of the machine is also equipped with three shooting modes of auto, pro and fun, plus manyimage editingFunction makes the machine more outstanding in taking photos.

Nubia Z5S(Licensed goods)
[Reference price] 1999 yuan
[Sales Merchant] JD.com
[Related Links]　http://item.jd.com/1013278.html

Brand:Huawei cell phone

5.0 inchesWhat is it?HUAWEI HONOR 3C

　　　　HuaweiHonor 3CIt’s an excellent thousand yuancell phoneThe machine has more than 50,000 comments on JD.com, which can also see the hot sales of the machine, and its praise rate is close to 90%. Now the machine has a 4G version. The machine is also equipped with a 5.0-inch screen, which is very suitable for one-handed operation. And the removable battery design used in the machine is also very convenient.

The bigger the screen, the better. The best 5-inch screen mobile phone is recommended.
Pictured, Huawei Honor 3C

　　　　Huawei Honor 3C has adopted5 inchesThe full-fit black waterfall screen has a resolution of 1280X720 pixels, and the display effect is good. In terms of taking pictures, the machine is equipped with a 8 million pixel rear lens, as well as a 5 million pixel front-facing camera and the support of LED fill light, which is very good for taking pictures. In terms of core, the machine is also equipped with a 1.3GHz MediaTek MT6582 quad-core processor, and a 1GB RAM + 4GB ROM memory combination. At the same time, the machine can smoothly run the Emotion UI 2.0 interface based on Android 4.2 system.

Pictured, Huawei Honor 3C

Editor’s comment:

　　　　The hardware configuration used by Huawei Honor 3C is the standard configuration of the current thousand yuan mobile phone, and the machine adopts a new Emotion UI 2.0 on the system. Emotion UI 2.0 has also made a lot of improvements in icons and themes, and it is worth mentioning that the machine also has a simple desktop, which can also satisfy more friends. At the same time, the machine supports intelligent somatosensory operations on the system, flipping mute and shaking to align desktop icons, etc. It is still very practical.

Huawei Honor 3C (licensed)
[Reference price] 899 yuan (set version)
[Sales merchant] JD.com mall
[Related Links]　http://item.jd.com/1024343.html

Summarize:

　　　　The above models are currently very popular mobile phones, including not only Huawei, Nubia and other domestic brands, but also LG, Samsung,HTCAnd other international brands, and what they have in common is the configuration of about 5-inch screens, of which Samsung and HTC are flagship phones. This is also the screen size that can be seen that the current 5-inch screen is the best balance between battery life and one-handed operation and the screen. The above mobile phones also include various price points. Friends who want to change phones now may wish to consider the above mobile phones.

With the development of smartphones, the screens of mobile phones are now getting larger and larger, from the previous 3.5 inches to the current maximum of 7 inches, which also brings great problems. Firstly, the battery life of the mobile phone is a problem. The larger the screen, the more power it consumes. Therefore, we need a larger battery to provide power.

Pang Chao

What will China’s quantum computer debut bring？

　　In the experimental building of Shanghai Research Institute of the University of Science and Technology of China, located in Pudong New Area, Shanghai, hundreds of components seem to grow randomly on a workbench of less than 3 square meters: some are bare and bare, while others are supported by wave plates like magnifying glasses, with different sizes and shapes, and the surrounding frame beams are covered with optical fibers. It’s hard to imagine that this is the main body of China Optical Quantum Computer, which has just come out, and has become a shining star in the scientific and technological circles of China and even the world.

　　On May 3rd, the developer of this computer — — The Institute of Quantum Information and Quantum Science and Technology Innovation of China Academy of Sciences announced here that Academician Pan Jianwei and colleagues Lu Chaoyang and Zhu Xiaobo of China University of Science and Technology, together with Wang Hao Hua Research Group of Zhejiang University, have built this quantum computer based on single photon, which is the first optical quantum computer in the world to surpass the early classical computers.

　　At one time, comments came one after another: "China scientists are once again at the forefront of innovation", "Quantum computer opens a new China speed" and "Quantum computing will completely change the future application prospects of mankind" & HELIP; … Even Pan Jianwei, the focus of this achievement, mentioned in an interview that "quantum computing research is like mushrooms after rain, and it has reached a critical moment of explosive development." So what can this "made in China" quantum computer do and what will it bring us? China Youth Daily Zhongqing Online reporter interviewed relevant experts.

　　Bicycles and airplanes

　　The reason why people are full of expectations for quantum computers is not unrelated to the problems encountered by traditional computers: in recent years, traditional computers have gradually encountered a series of problems such as power consumption bottlenecks and communication bottlenecks, and their performance growth is becoming more and more difficult. The demand for high-performance computing technology to explore new physical principles has emerged.

　　Quantum computer is a key for scientists to try to open infinite possibilities in the future. Theoretically, quantum computers can easily "kill" traditional classic computers: someone once made an analogy. If the speed of traditional computers is bicycles now, the speed of quantum computers is like airplanes.

　　The secret of "second kill" lies in the word "quantum".

　　The so-called quantum refers to the most basic unit of matter, which is inseparable. The well-known microscopic particles such as molecules, atoms, electrons and photons are all manifestations of quantum.

　　Pan Jianwei said that quantum has a characteristic that determines its ultra-fast computing power, and this characteristic is "quantum superposition". This is the fundamental difference between the quantum world and the classical world — — The famous "Schrodinger cat" vividly described this paradox. In the classic world, cats are either alive or dead, but a quantum cat can be in the superposition state of "dead" and "alive".

　　With this "nature" of superposition, quantum computing has the ability of parallelism, that is, synchronous computing can be realized. According to scientists, classical computers can only be "either-or" in binary algorithms: either 0 or 1. But quantum computers have the ability to "coexist".

　　For example, in order to "find" the correct information, the classic computer we commonly use at present needs to list and verify all the possibilities when extracting a problem to be solved, which is equivalent to a person with two hands who can only do one thing at a time; Quantum parallel computing can directly calculate and extract the corresponding information, which is equivalent to a thousand-handed Guanyin with two N hands, and can do what two N hands can do at the same time.

　　How fast the latter is depends on the exponential increase of n.

　　At the press conference on May 3rd, Pan Jianwei and the participants relived the classic story about chessboard wheat — —

　　In ancient India, the king was going to reward the inventor of chess and asked him what he wanted. Pointing to the chessboard in front of him, the inventor said to the king, Please put one grain of wheat in the first cell of the chessboard, two grains in the second cell, and four grains in the third cell, and then each cell will be twice as large as the previous one, and so on. When all the grains in the 64 cells on the chessboard are filled, you will give me a reward.

　　The king thought it was simple at first. Unexpectedly, when people brought bags of wheat to start counting, the king found that even bringing all the wheat from India could not meet the requirements of the prime minister — — If you count two pills a second, it will take hundreds of millions of years to count them all.

　　By the same token, Pan Jianwei said, with the increasing of N, the computing power of quantum computers will increase exponentially, and some large-scale computing problems that classical computers can’t solve will be "solved". He takes factorization of large numbers as an example. It takes 150,000 years for a classical computer to decompose a 300-bit large number, and it takes only one second for a trillion quantum computers to decompose this large number.

　　ideal and reality

　　According to Pan Jianwei’s description, quantum computers are also expected to play a big role in the large-scale computing problems of human society — —

　　In the field of public safety, quantum computing can instantly process 6 billion face pictures in the monitoring database and identify a person’s identity in real time; In the field of public transportation, quantum computing can quickly analyze and predict complex traffic conditions, so as to dispatch integrated transportation systems and avoid road congestion to the greatest extent, and so on.

　　However, these are only the "ideal" prospects for scientists at present, and quantum computers in reality are far from reaching this application level.

　　Even the China Optical Quantum Computer only beat the speed of the early electronic computer, which was 10 to 100 times faster than the first electron tube computer and the first transistor computer in human history, but it was "much slower" than the current smart phones and laptops.

　　In the early 1980s, American physicist Feynman put forward the concept of quantum computer, but after more than 30 years’ efforts, it is difficult for the best quantum computer in the world to complete some "seemingly childish" practical mathematical problems, so that people who are skeptical about it give this statement: Although quantum computing is a revolutionary technology, it always seems out of reach.

　　Now, things seem to have changed. At the beginning of this year, Nature magazine said in an article entitled "2017 will be the year when quantum computers come into reality from the laboratory" that quantum computing has long been considered as a technology that will be realized after 20 years. However, 2017 may be the year when this field changes its impression of "limited to research".

　　This change was confirmed in Shanghai, China on May 3rd, when the world’s first quantum computer surpassed the early classical computers came out.

　　Pan Jianwei said that there is a saying in the scientific community that there are "three steps" in quantum computing research as far as computing power is concerned. The first step is to surpass the computing power of the first electronic computer, the second step is to surpass the computing power of the commercial central processing unit, and the third step is to surpass the computing power of the supercomputer.

　　Now, Pan Jianwei team has finished the first step. He said, "At present, what we have achieved is only the first step, but this small step is an important step."

　　Commenting on this achievement, the reviewer of Nature Photonics said: "This quantum computer developed by scientists in China can be said to be the ENIAC in the field of quantum computing." The latter is the world’s first electron tube computer, which opened up the era of classical algorithmic computers.

　　The milestone significance of China, a quantum computer, can be seen.

　　Catch up and surpass

　　In fact, there are many schemes to realize quantum computing in laboratories all over the world, but the difficulty lies in the "manipulation" of microscopic quantum States. At present, Pan Jianwei’s team is working hard in three promising directions: photon quantum computing, ultracold atomic quantum computing and superconducting quantum computing.

　　The optical quantum computer unveiled on May 3rd is a quantum computing prototype that manipulates five particles, namely five optical qubits. According to quantum theory, the computing power of quantum computer will increase greatly with the increase of the number of particles that can be manipulated.

　　Lu Chaoyang, a professor at China University of Science and Technology, told reporters that the team’s next goal is to realize the manipulation of about 20 optical qubits by the end of this year, and is committed to the design, preparation and testing of 20 superconducting qubit samples.

　　At that time, the computing speed of quantum computer will be close to the best commercial central processing unit — — That is, the "second step" mentioned above, catching up with the speed of the current laptop. Lu Chaoyang said that by 2020, it is hoped that about 50 qubits can be manipulated, and then it is possible to achieve the "third step" breakthrough, that is, to surpass supercomputers.

　　Previously, John Preskill, a physicist at California Institute of Technology, mentioned a word called "quantum hegemony", to the effect that when a quantum computer has 5 to 20 qubits, it can accomplish what a top supercomputer can do, and once it has more than 49 qubits, the ability of a quantum computer will be beyond the reach of a supercomputer.

　　"This is called ‘ Quantum hegemony ’ The task, the motivation for scientists to design this problem at first is to show the ability of quantum computers and compete with classic computers to see who runs fast. " Lu Chaoyang said.

　　Pan Jianwei said that in the next 10 years, it is very likely that the scientific community will be able to manipulate 100 qubits. By then, its computing power may be billions of times faster than the most powerful supercomputer at present.

　　Further prediction, Pan Jianwei said that if more than 1,000 quanta can be achieved in the future, scientists may be able to study how consciousness is generated, and may be able to give birth to unimaginable artificial intelligence.

　　But at that time, ordinary people probably still didn’t need quantum computers. Pan Jianwei said that taking the existing mobile phone terminals as an example, the computing tasks that need to be completed can be sent to the cloud through the cloud computing platform, and the quantum computers in the background can complete them.

　　He also admitted that just as people who invented abacus in ancient times would not think of computers today, it is difficult for him to accurately predict the huge energy of quantum computers in the future, and everything can only be seen.