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Latest Quantum cryptography Stories

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2009-07-30 12:50:00

The first desktop computers changed the way we managed data forever. Three decades after their introduction, we rely on them to manage our time, social life and finances "” and to keep this information safe from prying eyes and online predators.So far, so good, despite an occasional breach. But our security and our data could be compromised overnight when the first quantum computer is built, says Dr. Julia Kempe of Tel Aviv University's Blavatnik School of Computer Science. These new...

2009-07-02 16:05:56

A U.S.-led team of physicists says it has created the first rudimentary, solid-state quantum processor, moving science closer to building a quantum computer. Yale University scientists said they also used the two-qubit superconducting chip to successfully run elementary algorithms, such as a simple search, demonstrating quantum information processing with a solid-state device for the first time. Our processor can perform only a few very simple quantum tasks, which have been demonstrated...

2009-07-02 08:53:56

European scientists say they have built the world's largest quantum key distribution network to transmit secure quantum encrypted information. Officials said 41 research and industrial organizations constructed the eight-node, mesh network consisting of an average 12-mile to 19-mile link, with the longest link being 51 miles. The scientists said their achievement is a huge step toward practical implementation of secure quantum-encrypted communication networks. The Institute of Physics in...

2009-07-02 10:15:52

Researchers from across Europe have united to build the largest quantum key distribution network ever built. The efforts of 41 research and industrial organisations were realised as secure, quantum encrypted information was sent over an eight node, mesh network.With an average link length of 20 to 30 kilometres, and the longest link being 83 kilometres, the researchers from organisations such as the AIT Austrian Institute of Technology (formerly Austrian Research Centers), id Quantique,...

2009-06-22 09:30:00

QuintessenceLabs, the leader in quantum communications technology for networking, communications, national security and defence, announces partnership with Lockheed Martin Corporation to develop applications of Quantum Key Distribution for markets in Australia and the United States. CANBERRA, Australia, June 22 /PRNewswire/ -- QuintessenceLabs, the leader in ultrasecure quantum communications, has announced a partnership with Lockheed Martin Corporation for the development of its Quantum Key...

2009-06-03 15:01:48

Physicists at the National Institute of Standards and Technology (NIST) have demonstrated entanglement"”a phenomenon peculiar to the atomic-scale quantum world"”in a mechanical system similar to those in the macroscopic everyday world. The work extends the boundaries of the arena where quantum behavior can be observed and shows how laboratory technology might be scaled up to build a functional quantum computer.The research, described in the June 4 issue of Nature,* involves a...

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2009-05-29 11:54:48

Researchers at UC Santa Barbara have recently demonstrated a breakthrough in the quantum control of photons, the energy quanta of light. This is a significant result in quantum computation, and could eventually have implications in banking, drug design, and other applications. In a paper to be published in today's issue of the journal Nature, UCSB physics researchers Max Hofheinz, John Martinis, and Andrew Cleland document how they used a superconducting electronic circuit known as a...

2009-05-29 07:40:00

A team of physicists and engineers have demonstrated all-fibre quantum logic, where single photons are generated and used to perform the contolled-NOT quantum logic gate in optical fibres with high fidelity.The only quantum technology in practical use today is quantum cryptography and is currently limited in the distance over which secure communication may occur.More sophisticated quantum networks will require multiple nodes with the ability to implement small-scale quantum processing in...

2009-04-30 10:06:58

Quantum cryptography, a completely secure means of communication, is much closer to being used practically as researchers from Toshiba and Cambridge University's Cavendish Laboratory have now developed high speed detectors capable of receiving information with much higher key rates, thereby able to receive more information faster. Published as part of IOP Publishing's New Journal of Physics' Focus Issue on 'Quantum Cryptography: Theory and Practice', the journal paper, 'Practical gigahertz...

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2009-04-08 15:34:55

Highlighting another challenge to the development of quantum computers, theorists at the National Institute of Standards and Technology (NIST) have shown* that a type of software operation, proposed as a solution to fundamental problems with the computers' hardware, will not function as some designers had hoped. Quantum computers"”if they can ever be realized"”will employ effects associated with atomic physics to solve otherwise intractable problems. But the NIST team has proved...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.