Tag: quantum supremacy

Quantum Computer Solves Decades-Old Problem Three Million Times Faster Than a Classical Computer

ZDNet reports: Scientists from quantum computing company D-Wave have demonstrated that, using a method called quantum annealing, they could simulate some materials up to three million times faster than it would take with corresponding classical methods. Together with researchers from Google, the scientists set out to measure the speed of simulation in one of D-Wave’s quantum annealing processors, and found that…

Chinese photonic quantum computer demonstrates quantum supremacy

A team of researchers affiliated with several institutions in China has built and tested a photonic quantum computer that demonstrates quantum supremacy. In their paper published in the journal Science, the group describes their computer, which they call Jiuzhang, and how well it performed while conducting Gaussian boson sampling. …

A quantum computer that measures light has achieved quantum supremacy

A specialised quantum computer has achieved quantum supremacy, accomplishing in under 4 minutes what would take the biggest supercomputer 600 million years Source: https://www.newscientist.com/article/2261906-a-quantum-computer-that-measures-light-has-achieved-quantum-supremacy/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…

Google Performs First Quantum Simulation of a Chemical Reaction

An anonymous reader quotes a report from NewScientist: Google researchers have used a quantum computer to simulate a chemical reaction for the first time. The reaction is a simple one, but this marks a step towards finding a practical use for quantum computers. A team at Google has used the company’s Sycamore device to perform the first accurate quantum simulation of…

Fifty perfect photons for ‘quantum supremacy’

Fifty is a critical number for quantum computers capable of solving problems that classic supercomputers cannot solve. Proving quantum supremacy requires at least 50 qubits. For quantum computers working with light, it is equally necessary to have at least 50 photons. And what’s more, these photons have to be perfect, or else they will worsen their own quantum capabilities. It is…

Researchers set benchmark to determine achievement of quantum computing

The race toward the first practical quantum computer is in full stride. Companies, countries, collaborators, and competitors worldwide are vying for quantum supremacy. Google says it’s already there. But what does that mean? How will the world know when it’s been achieved? …

Discovery of zero-energy bound states at both ends of a one-dimensional atomic line defect

In recent years, the development of quantum computers beyond the capability of classical computers has become a new frontier in science and technology and a key direction to realize quantum supremacy. However, conventional quantum computing has a serious challenge due to quantum decoherence effect and requires a significant amount of error correction in scaling quantum qubits. Therefore, the exploration of fault-tolerant…

Google’s quantum supremacy algorithm has found its first practical use

Google has put the algorithm it used to achieve quantum supremacy to work. It generated verifiably random numbers, which could be used one day in encryption or lotteries Source: https://www.newscientist.com/article/2227490-googles-quantum-supremacy-algorithm-has-found-its-first-practical-use/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…

Quantum Computer Made From Photons Achieves New Record

Slashdot reader hackingbear shared this article from Scientific American: In the race to create a quantum computer that can outperform a classical one, a method using particles of light (photons) has taken a promising step forward. Jian-Wei Pan and Chao-Yang Lu, both at the University of Science and Technology of China, and their colleagues improved a quantum computing technique called boson…