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Quantum Physics Jun 9, 2021

Researchers realize unconventional coherent control of solid-state spin qubits

A research team led by Prof. Guo Guangcan from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), together with Prof. Adam Gali from Wigner Research Centre for Physics, realized ...

General Physics Apr 13, 2021

Sensitive qubit-based technique to accelerate search for dark matter

Scientists at the Department of Energy's Fermi National Accelerator Laboratory and the University of Chicago have demonstrated a new technique based on quantum technology that will advance the search for dark matter, the ...

Optics & Photonics Apr 1, 2021

Spin-to-charge conversion achieves 95% overall qubit readout fidelity

A team led by Professor Du Jiangfeng and Professor Wang Ya from the Chinese Academy of Sciences (CAS) Key Laboratory of Microscale Magnetic Resonance of the University of Science and Technology of China put forward an innovative ...

Optics & Photonics Mar 15, 2021

When memory qubits and photons get entangled

Encrypting data in a way that ensures secure communication is an ever-growing challenge because crucial components of today's encryption systems cannot withstand future quantum computers. Researchers around the world are ...

Quantum Physics Feb 8, 2021

Implementing a quantum approximate optimization algorithm on a 53-qubit NISQ device

A large team of researchers working with Google Inc. and affiliated with a host of institutions in the U.S., one in Germany and one in the Netherlands has implemented a quantum approximate optimization algorithm (QAOA) on ...

Quantum Physics Feb 2, 2021

Beyond qubits: Team takes next big step to scale up quantum computing

Scientists and engineers at the University of Sydney and Microsoft Corporation have opened the next chapter in quantum technology with the invention of a single chip that can generate control signals for thousands of qubits, ...

Quantum Physics Oct 7, 2020

Quantum heat engine behaviour observed in a qubit

Although many of today's accepted theories of classical thermodynamics predate even the industrial revolution they helped to propel, many open questions remain around how these ideas translate to the level of single quantum ...

Quantum Physics Mar 2, 2020

Scientists measure electron spin qubit without demolishing it

A group of scientists from the RIKEN Center for Emergent Matter Science in Japan has succeeded in taking repeated measurements of the spin of an electron in a silicon quantum dot (QD) without changing its spin in the process. ...

Quantum Physics Jan 29, 2020

Qubits made from strontium and calcium ions can be precisely controlled by technology that already exists

Of the many divergent approaches to building a practical quantum computer, one of the most promising paths leads toward ion traps. In these traps, single ions are held still and serve as the basic units of data, or qubits, ...

Quantum Physics Jan 10, 2020

New approach for controlling qubits via microwave pulses reduces error rates and increases efficiency

A functional quantum computer is one of the most intriguing promises of quantum technology. With significantly increased computing power, quantum computers will be able to solve tasks that conventional computers cannot handle, ...

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