He has no talent but racism ranting. But I hope Indian has more of this people so that they can be continued be backward while China continue to progress and be 1000 miles ahead of them.
Chinese Scientists Make Breakthrough in Quantum Computing
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terranMarine
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Don't underestimate him, he's an unusual rare breed among the talent pool from India. US companies are standing at their doorstep trying to pull these people away from their homeland.
Jlaw
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AndrewJin
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Once he even lectured me on high-speed railways....
What a genius!
terranMarine
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so how much did you learn from the genius?
AndrewJin
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I leart that China should go for 500km/h at the moment. 350km/h railways are totally wasteful and too damn slow.
terranMarine
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If he taught you this then it means India already has the 500km/h in operation right now. Excellent
AndrewJin
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Yes, part of the achievement of Supa Powa 2012
JSCh
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Yarui Zheng, Chao Song, Ming-Cheng Chen, Benxiang Xia, Wuxin Liu, Qiujiang Guo, Libo Zhang, Da Xu, Hui Deng, Keqiang Huang, Yulin Wu, Zhiguang Yan, Dongning Zheng, Li Lu, Jian-Wei Pan, H. Wang, Chao-Yang Lu, and Xiaobo Zhu. "Solving Systems of Linear Equations with a Superconducting Quantum Processor". Phys. Rev. Lett. (2017). DOI: 10.1103/PhysRevLett.118.210504
Abstract
Superconducting quantum circuits are a promising candidate for building scalable quantum computers. Here, we use a four-qubit superconducting quantum processor to solve a two-dimensional system of linear equations based on a quantum algorithm proposed by Harrow, Hassidim, and Lloyd [Phys. Rev. Lett. 103, 150502 (2009)], which promises an exponential speedup over classical algorithms under certain circumstances. We benchmark the solver with quantum inputs and outputs, and characterize it by nontrace-preserving quantum process tomography, which yields a process fidelity of 0.837±0.006. Our results highlight the potential of superconducting quantum circuits for applications in solving large-scale linear systems, a ubiquitous task in science and engineering.
Superconducting quantum circuits are a promising candidate for building scalable quantum computers. Here, we use a four-qubit superconducting quantum processor to solve a two-dimensional system of linear equations based on a quantum algorithm proposed by Harrow, Hassidim, and Lloyd [Phys. Rev. Lett. 103, 150502 (2009)], which promises an exponential speedup over classical algorithms under certain circumstances. We benchmark the solver with quantum inputs and outputs, and characterize it by nontrace-preserving quantum process tomography, which yields a process fidelity of 0.837±0.006. Our results highlight the potential of superconducting quantum circuits for applications in solving large-scale linear systems, a ubiquitous task in science and engineering.
cirr
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Unveiling China's 'baby' quantum computer
2017-05-23 15:09
Xinhua Editor: Gu Liping
On a table of 3 square meters are dozens of lenses and odd devices, with wires suspended above and a machine chirping ceaselessly.
It is a prototype quantum computer developed by about 20 Chinese scientists at the Shanghai-based Institute for Quantum Information and Quantum Technology Innovation of the Chinese Academy of Sciences (CAS).
The "baby" quantum computer, unveiled in early May, is the first quantum computing machine based on single photons that could go beyond the early classical -- or conventional -- computer.
The principle of quantum computing is based on one of the strangest phenomena in quantum physics: quantum entanglement. The ancients would see modern electronic technology as akin to witchcraft; most people today would have a similar view of future quantum computing technology.
Scientists say quantum computing exploits the fundamental quantum superposition principle to enable ultra-fast parallel calculation and simulation capabilities. In normal silicon computer chips, data is rendered in one of two states: 0 or 1. In quantum computers, data can exist in both states simultaneously, holding exponentially more information.
The computing power of a quantum computer grows exponentially with the number of quantum bits that can be manipulated. This could effectively solve large-scale computation problems that are beyond the ability of current classical computers, scientists say.
PHOTON WIZARDRY
Lu Chaoyang, a 34-year-old professor at the University of Science and Technology of China (USTC) and one of the developers of the prototype quantum computer, is nicknamed "the photon wizard."
"You can't find two identical leaves in the world, but we can make two identical photons -- even God couldn't tell them apart. With identical photons, we can produce quantum interference and entanglement," says Lu.
The identical photons are produced by a device called a single photon source. The chirping machine is a refrigerator that keeps the single photon source at a temperature of minus 269 degrees centigrade.
"As a result of technological breakthroughs in 2013, our single photon source is the world's best, as 99.5 percent of the photons it produces are identical. It is ten times more efficient than its counterparts abroad," Lu says.
"Using former technology, the photons were like twins playing in mud -- you could distinguish them by the droplets of mud on their bodies. But our technological innovation makes photons like clean indistinguishable twins."
Since the "baby" quantum computer was born, it has done just one thing: play a "game" named Boson sampling, which was designed to enable a quantum computer compete with a classical computer.
"We can manipulate five entangled photons so the machine defeats the early classical computer," says Lu. In fact, the wizard and his colleagues set a new world record of manipulating 10 entangled photons at the end of 2016.
They aim to realize manipulation of 20 entangled photons by the end of this year.
"Although the 'baby' quantum computer can't even beat the mobile phone in your hand, it's a milestone. The first electronic computer in human history, which is so big that it filled several rooms, is worthless today, but it is of great scientific significance. We have to develop step by step from science to technology and then to application," Lu says.
"When the car was first invented, it was unreliable and uncomfortable compared with the carriage. But cars eventually surpassed carriages as a result of technological progress."
GREEN SHOOTS
Lu's tutor, Pan Jianwei, a CAS academician and a leading quantum physicist, has spent more than two decades researching the manipulation of microscopic particles.
"At first, our road was very hard, but now our progress is faster and accelerating. It heralds the coming of a key period in the development of quantum computing. This is like bamboo shoots popping up after the rain," Pan says.
Due to the enormous potential of quantum computing, Europe and the United States are actively collaborating in their research. High-tech companies, such as Google, Microsoft and IBM, also have massive interests in quantum computing research.
The photon-based system is just one of the means scientists are trying to achieve quantum computing.
USTC Professor Zhu Xiaobo, who is researching superconducting quantum computing, says there are at least seven or eight different technical routes. Several Chinese research teams are on different roads.
"Nobody knows which route could eventually lead to a quantum computer of practical value. Maybe all roads lead to Rome. Maybe there will be different kinds of quantum computers to solve different problems. There is another possibility that a dark horse from an unknown road reaches the goal first," Zhu says.
The research team led by Pan Jianwei is exploring three technical routes: systems based on single photons, ultra-cold atoms and superconducting circuits.
Although Pan's team has an advantage in photon-based system, Pan says a system based on ultra-cold atoms might be the first of practical value.
In addition, the superconducting system, with its integration and coherence, cannot be ignored, says Pan. High-tech companies, such as Google and IBM, have made large investments in this field.
Pan estimates that Chinese scientists could realize manipulation of around 50 quantum bits to construct a superconducting quantum computer that can exceed the most powerful supercomputer by 2020.
ANOTHER "BABY"
In another lab of the Institute for Quantum Information and Quantum Technology Innovation, a superconducting quantum computer is under incubation.
Unlike the photon quantum computer displaying all its "organs" on the table, the superconducting quantum computer "baby" hides its key parts in a big cylinder more than a meter tall. The cylinder keeps the superconducting quantum chip at a temperature of minus 273.13 degrees centigrade.
Zhu Xiaobo, one of its main developers, and his colleagues have broken a record set by the research team from Google, NASA and the University of California at Santa Barbara, who achieved high-precision manipulation of nine superconducting quantum bits in 2015. The Chinese team independently developed a superconducting quantum circuit containing 10 superconducting quantum bits.
Holding a superconducting quantum chip as big as a nail, Zhu says the most difficult thing is to increase the control accuracy of the chip.
Although the team developed the chip, Zhu says the system cannot be called a superconducting quantum computer. "A quantum computer is totally new. Many top scientists are uncertain how a quantum computer will work."
He hopes to construct a prototype superconducting quantum computer with 10 quantum bits by the end of this year.
Pan reckons Chinese scientists could realize manipulation of 100 quantum bits within 10 years, which means the capacity of one quantum computer would be a million times the total capacity of all the computers currently in use.
Will everybody have a quantum computer in future?
Pan predicts there will be tens of thousands or millions of quantum computers in the world. "But I don't need one at home, as it's very difficult to make my mobile phone or laptop extremely cold. But I can use cloud technology to send tasks to the quantum cloud platform," says Pan.
"We don't need a quantum computer to do what traditional computers can do well. We need it to solve problems that are difficult for traditional computers, such as code cracking, weather forecasting and pharmaceutical design. Quantum computing will also push the development of artificial intelligence," he says.
"We still don't know if quantum computers will enter common use. Maybe future quantum computers will be totally different from what we imagine today."
http://www.ecns.cn/2017/05-23/258693.shtml
2017-05-23 15:09
Xinhua Editor: Gu Liping
On a table of 3 square meters are dozens of lenses and odd devices, with wires suspended above and a machine chirping ceaselessly.
It is a prototype quantum computer developed by about 20 Chinese scientists at the Shanghai-based Institute for Quantum Information and Quantum Technology Innovation of the Chinese Academy of Sciences (CAS).
The "baby" quantum computer, unveiled in early May, is the first quantum computing machine based on single photons that could go beyond the early classical -- or conventional -- computer.
The principle of quantum computing is based on one of the strangest phenomena in quantum physics: quantum entanglement. The ancients would see modern electronic technology as akin to witchcraft; most people today would have a similar view of future quantum computing technology.
Scientists say quantum computing exploits the fundamental quantum superposition principle to enable ultra-fast parallel calculation and simulation capabilities. In normal silicon computer chips, data is rendered in one of two states: 0 or 1. In quantum computers, data can exist in both states simultaneously, holding exponentially more information.
The computing power of a quantum computer grows exponentially with the number of quantum bits that can be manipulated. This could effectively solve large-scale computation problems that are beyond the ability of current classical computers, scientists say.
PHOTON WIZARDRY
Lu Chaoyang, a 34-year-old professor at the University of Science and Technology of China (USTC) and one of the developers of the prototype quantum computer, is nicknamed "the photon wizard."
"You can't find two identical leaves in the world, but we can make two identical photons -- even God couldn't tell them apart. With identical photons, we can produce quantum interference and entanglement," says Lu.
The identical photons are produced by a device called a single photon source. The chirping machine is a refrigerator that keeps the single photon source at a temperature of minus 269 degrees centigrade.
"As a result of technological breakthroughs in 2013, our single photon source is the world's best, as 99.5 percent of the photons it produces are identical. It is ten times more efficient than its counterparts abroad," Lu says.
"Using former technology, the photons were like twins playing in mud -- you could distinguish them by the droplets of mud on their bodies. But our technological innovation makes photons like clean indistinguishable twins."
Since the "baby" quantum computer was born, it has done just one thing: play a "game" named Boson sampling, which was designed to enable a quantum computer compete with a classical computer.
"We can manipulate five entangled photons so the machine defeats the early classical computer," says Lu. In fact, the wizard and his colleagues set a new world record of manipulating 10 entangled photons at the end of 2016.
They aim to realize manipulation of 20 entangled photons by the end of this year.
"Although the 'baby' quantum computer can't even beat the mobile phone in your hand, it's a milestone. The first electronic computer in human history, which is so big that it filled several rooms, is worthless today, but it is of great scientific significance. We have to develop step by step from science to technology and then to application," Lu says.
"When the car was first invented, it was unreliable and uncomfortable compared with the carriage. But cars eventually surpassed carriages as a result of technological progress."
GREEN SHOOTS
Lu's tutor, Pan Jianwei, a CAS academician and a leading quantum physicist, has spent more than two decades researching the manipulation of microscopic particles.
"At first, our road was very hard, but now our progress is faster and accelerating. It heralds the coming of a key period in the development of quantum computing. This is like bamboo shoots popping up after the rain," Pan says.
Due to the enormous potential of quantum computing, Europe and the United States are actively collaborating in their research. High-tech companies, such as Google, Microsoft and IBM, also have massive interests in quantum computing research.
The photon-based system is just one of the means scientists are trying to achieve quantum computing.
USTC Professor Zhu Xiaobo, who is researching superconducting quantum computing, says there are at least seven or eight different technical routes. Several Chinese research teams are on different roads.
"Nobody knows which route could eventually lead to a quantum computer of practical value. Maybe all roads lead to Rome. Maybe there will be different kinds of quantum computers to solve different problems. There is another possibility that a dark horse from an unknown road reaches the goal first," Zhu says.
The research team led by Pan Jianwei is exploring three technical routes: systems based on single photons, ultra-cold atoms and superconducting circuits.
Although Pan's team has an advantage in photon-based system, Pan says a system based on ultra-cold atoms might be the first of practical value.
In addition, the superconducting system, with its integration and coherence, cannot be ignored, says Pan. High-tech companies, such as Google and IBM, have made large investments in this field.
Pan estimates that Chinese scientists could realize manipulation of around 50 quantum bits to construct a superconducting quantum computer that can exceed the most powerful supercomputer by 2020.
ANOTHER "BABY"
In another lab of the Institute for Quantum Information and Quantum Technology Innovation, a superconducting quantum computer is under incubation.
Unlike the photon quantum computer displaying all its "organs" on the table, the superconducting quantum computer "baby" hides its key parts in a big cylinder more than a meter tall. The cylinder keeps the superconducting quantum chip at a temperature of minus 273.13 degrees centigrade.
Zhu Xiaobo, one of its main developers, and his colleagues have broken a record set by the research team from Google, NASA and the University of California at Santa Barbara, who achieved high-precision manipulation of nine superconducting quantum bits in 2015. The Chinese team independently developed a superconducting quantum circuit containing 10 superconducting quantum bits.
Holding a superconducting quantum chip as big as a nail, Zhu says the most difficult thing is to increase the control accuracy of the chip.
Although the team developed the chip, Zhu says the system cannot be called a superconducting quantum computer. "A quantum computer is totally new. Many top scientists are uncertain how a quantum computer will work."
He hopes to construct a prototype superconducting quantum computer with 10 quantum bits by the end of this year.
Pan reckons Chinese scientists could realize manipulation of 100 quantum bits within 10 years, which means the capacity of one quantum computer would be a million times the total capacity of all the computers currently in use.
Will everybody have a quantum computer in future?
Pan predicts there will be tens of thousands or millions of quantum computers in the world. "But I don't need one at home, as it's very difficult to make my mobile phone or laptop extremely cold. But I can use cloud technology to send tasks to the quantum cloud platform," says Pan.
"We don't need a quantum computer to do what traditional computers can do well. We need it to solve problems that are difficult for traditional computers, such as code cracking, weather forecasting and pharmaceutical design. Quantum computing will also push the development of artificial intelligence," he says.
"We still don't know if quantum computers will enter common use. Maybe future quantum computers will be totally different from what we imagine today."
http://www.ecns.cn/2017/05-23/258693.shtml
Last edited:
why drag God into this article?
IF God the creator of all things & power cant tell them apart what of ignorant man?
Beware of boastful man will fall one day...
cirr
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There are some who believe in God, then there are others who don't believe in God.
For me, God has always been nothing but a figment of imagination.
simply look at life on earth, the mechanism of our solar system, universe there is nothing like earth that support life.
how did all these come about? evolution?
i am talking about the God of israel.
off course i m not going to convince everyone...
Keel
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Where is the self proclaimed intelligent indian who said he is very knowlegeable on the subject and needs some time to gather information to debunk our comments and reports on China's excellent achievements? He said he was busy. That was some weeks ago!
GS Zhou
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A most recent speech made by Pan Jianwei. Pan said his team could achieve the target to manipulate 50 quantum bits within the next 3 to 5 years. And a quantum computer powered by 50 quantum bits manipulation would be faster than the fastest computer today!
Quote of Pan's speech: 除了量子通信外，近年来我们在量子计算等领域也取得了较好的成绩。比如，就在上个月，我们在上海发布了首个超越早期经典计算机的光量子计算原型机，还有首次实现了10个超导量子比特的量子计算芯片。我们预期，再经过3到5年的努力，就可以操纵50个量子比特，这时，量子计算机对某些特定问题的处理能力就可以超过目前最快的经典超级计算机，实现“量子称霸”这一里程碑。
Full speech could be read at (in Chinese only):
http://news.sciencenet.cn/htmlnews/2017/6/380631.shtm?id=380631
Quote of Pan's speech: 除了量子通信外，近年来我们在量子计算等领域也取得了较好的成绩。比如，就在上个月，我们在上海发布了首个超越早期经典计算机的光量子计算原型机，还有首次实现了10个超导量子比特的量子计算芯片。我们预期，再经过3到5年的努力，就可以操纵50个量子比特，这时，量子计算机对某些特定问题的处理能力就可以超过目前最快的经典超级计算机，实现“量子称霸”这一里程碑。
Full speech could be read at (in Chinese only):
http://news.sciencenet.cn/htmlnews/2017/6/380631.shtm?id=380631
