Quantum Computing News

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Robust Approach to Certify Quantum Devices

An international team including CQT researchers has come up with a "robust and versatile" scheme for doing quality testing of quantum devices. The scheme is described in a 22 July paper in Physical Review Letters.

11 Aug 2014

Diamonds and Nitrogen Atoms Could be Assembled to Create Topologically Protected Quantum Computer

The Quantum Computer is the Holy Grail of quantum technology. Its computing power would eclipse even the fastest classical computers we have today. A team of researchers from TU Wien (Vienna) the National Institute for Informatics (Tokyo) and NTT Basic Research Labs in Japan has now proposed a new architecture for quantum computing, based on microscopic defects in diamond.

8 Aug 2014

NIST Ion Duet Holds Promise for Logic Operations in Future Quantum Computers

Physicists at the National Institute of Standards and Technology (NIST) have demonstrated a pas de deux of atomic ions that combines the fine choreography of dance with precise individual control.

7 Aug 2014

Controlled Positioning of Atomic-Scale Diamond Defects May Help Build Better Quantum Computers

By carefully controlling the position of an atomic-scale diamond defect within a volume smaller than what some viruses would fill, researchers have cleared a path toward better quantum computers and nanoscale sensors. They describe their technique in a paper published in the journal Applied Physics Letters, from AIP Publishing.

6 Aug 2014

MRI-Like Diagnostic Executed on Crystal of Interacting Quantum Spins

Magnetic resonance imaging (MRI), which is the medical application of nuclear magnetic resonance spectroscopy, is a powerful diagnostic tool.

1 Aug 2014

Novel Experiment Opens the Way for Active Quantum Control Techniques

One of the famous examples of the weirdness of quantum mechanics is the paradox of Schrödinger's cat.

31 Jul 2014

Closer to Proving Reliability of Quantum Computers

Physicists are one step closer to proving the reliability of a quantum computer – a machine which promises to revolutionise the way we trade over the internet and provide new tools to perform powerful simulations.

31 Jul 2014

Quantum Entanglement of Particles Preserved When Passing Through an Amplifier

Physicists Sergei Filippov (MIPT and Russian Quantum Center at Skolkovo) and Mario Ziman (Masaryk University in Brno, Czech Republic, and the Institute of Physics in Bratislava, Slovakia) have found a way to preserve quantum entanglement of particles passing through an amplifier and, conversely, when transmitting a signal over long distances. Details are provided in an article published in the journal Physical Review A (see preprint).

25 Jul 2014

CQT Paper on Self-Testing of the Singlet Earns Journal Award

Imagine you buy a device that promises to make entangled qubits – pairs of photons, say, that you want to use for sending a secret message or doing a quantum computation.

24 Jul 2014

Innovative Laser May Play Crucial Role in Quantum Computer Development

Dartmouth scientists and their colleagues have devised a breakthrough laser that uses a single artificial atom to generate and emit particles of light. The laser may play a crucial role in the development of quantum computers, which are predicted to eventually outperform today's most powerful supercomputers.

23 Jul 2014