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Quantum Physics Jul 1, 2021

Scientists advance the understanding of potential topological quantum bits

Quantum computers promise great advances in many fields—from cryptography to the simulation of protein folding. Yet, which physical system works best to build the underlying quantum bits is still an open question. Unlike ...

Quantum Physics Jun 1, 2021

Researchers demonstrate a quantum advantage

Quantum computing and quantum sensing have the potential to be vastly more powerful than their classical counterparts. Not only could a fully realized quantum computer take just seconds to solve equations that would take ...

General Physics Mar 10, 2021

Creating a new type of computing that's 'naturally probabilistic'

"You see, nature is unpredictable. How do you expect to predict it with a computer?" said American physicist Richard Feynman before computer scientists at a conference in 1981.

Quantum Physics Dec 17, 2020

Tiny quantum computer solves real optimization problem

Quantum computers have already managed to surpass ordinary computers in solving certain tasks—unfortunately, totally useless ones. The next milestone is to get them to do useful things. Researchers at Chalmers University ...

Quantum Physics Jul 29, 2020

Simulating quantum 'time travel' disproves butterfly effect in quantum realm

Using a quantum computer to simulate time travel, researchers have demonstrated that, in the quantum realm, there is no "butterfly effect." In the research, information—qubits, or quantum bits—'time travel' into the simulated ...

Quantum Physics Mar 3, 2020

Less is more for Maxwell's Demon in quantum heat engines

Over 150 years after the famous Scottish scientist James Clerk Maxwell first introduced the idea, the concept of Maxwell's demon continues to perplex physicists and information scientists. The demon he dreamed up in a thought ...

Quantum Physics Feb 4, 2020

Quantum computers flip the script on spin chemistry

To build cheaper and more efficient sustainable energy options, we need to know a lot more than we currently do about the chemical reactions that convert solar energy into electricity. One of the best ways to do that is through ...

Quantum Physics Jan 14, 2020

How to verify that quantum chips are computing correctly

In a step toward practical quantum computing, researchers from MIT, Google, and elsewhere have designed a system that can verify when quantum chips have accurately performed complex computations that classical computers can't.

Quantum Physics Jan 3, 2020

Researchers advance performance benchmark for quantum computers

Researchers at the Department of Energy's Oak Ridge National Laboratory have developed a quantum chemistry simulation benchmark to evaluate the performance of quantum devices and guide the development of applications for ...

Superconductivity Aug 15, 2019

Newfound superconductor material could be the 'silicon of quantum computers'

A potentially useful material for building quantum computers has been unearthed at the National Institute of Standards and Technology (NIST), whose scientists have found a superconductor that could sidestep one of the primary ...

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