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Quantum Key Distribution Technology Successfully Trialled over Live 'Lit' Fibre Network

Toshiba Research Europe, BT, ADVA Optical Networking and the National Physical Laboratory (NPL), the UK's National Measurement Institute, today announced the first successful trial of Quantum Key Distribution (QKD) technology over a live 'lit' fibre network.

25 Apr 2014

New Level of Reliability in Five-Qubit Array Advances Progress towards Quantum Computers

A fully functional quantum computer is one of the holy grails of physics. Unlike conventional computers, the quantum version uses qubits (quantum bits), which make direct use of the multiple states of quantum phenomena. When realized, a quantum computer will be millions of times more powerful at certain computations than today's supercomputers.

25 Apr 2014

Novel MRI System Helps Peer Into Atomic Structure of Individual Molecules

For decades, scientists have used techniques like X-ray crystallography and nuclear magnetic resonance imaging (NMR) to gain invaluable insight into the atomic structure of molecules, but such efforts have long been hampered by the fact that they demand large quantities of a specific molecule and often in ordered and crystalized form to be effective – making it all but impossible to peer into the structure of most molecules.

21 Apr 2014

Single Photon Can Activate Quantum Switches

Harvard researchers have succeeded in creating quantum switches that can be turned on and off using a single photon, a technological achievement that could pave the way for the creation of highly secure quantum networks.

21 Apr 2014

Yale Scientists Improve Energy Storage Time of Quantum Switches

Scientists at Yale have confirmed a 50-year-old, previously untested theoretical prediction in physics and improved the energy storage time of a quantum switch by several orders of magnitude. They report their results in the April 17 issue of the journal Nature.

17 Apr 2014

Review on Quantum Manipulation

Quantum superposition is a fundamental and also intriguing property of the quantum world. Because of superposition, a quantum system can be in two different states simultaneously, like a cat that can be both "dead" and "alive" at the same time. However, this anti-intuitive phenomenon cannot be observed directly, because whenever a classical measuring tool touches a quantum system, it immediately collapse into a classical state.

15 Apr 2014

Novel Proof-of-Concept Experiment Will Aid Development of Programmable Quantum Computers

University of Chicago researchers and their colleagues at University College London have performed a proof-of-concept experiment that will aid the future development of programmable quantum computers.

11 Apr 2014

Scientists Realize Quantum Logic Gate between a Single Photon and a Single Atom

Scientists at MPQ successfully process quantum information with a system comprising an optical photon and a trapped atom.

11 Apr 2014

Max Planck Physicists Develop Novel Quantum Gate, Essential for Quantum Computers

Quantum information processing is almost a sure thing in the not-too-distant future. Physicists from the Max Planck Institute of Quantum Optics in Garching have developed a novel quantum gate, an essential component of quantum computers.

10 Apr 2014

Waveguides Coupled with Surface Plasmons Hold Promise for Quantum Computing

For years, researchers have been interested in developing quantum computers—the theoretical next generation of technology that will outperform conventional computers. Instead of holding data in bits, the digital units used by computers today, quantum computers store information in units called "qubits." One approach for computing with qubits relies on the creation of two single photons that interfere with one another in a device called a waveguide.

7 Apr 2014