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Primeur weekly 2015-05-26

Exascale supercomputing

House passes two Hultgren bills to promote technological innovation, manufacturing, "exascale" supercomputing ...

The Cloud

Mellanox collaborates with Supermicro to deliver CloudX-based hyper-converged infrastructure ...

IBM and United Business Group partner to accelerate hybrid Cloud adoption in Kuwait ...

IBM delivers broadest set of OpenStack services ...

EuroFlash

Transinsight wins German public tender for the National Academy of Sciences - Leopoldina for creating a semantic search engine on demographic change ...

Call for Papers: Women in HPC Workshop for early career researchers in HPC, in collaboration with ISC High Performance 2015 ...

Cardiff researchers join the hunt for 'elusive' gravitational waves ...

MAGIC is officially approved by European Commission's Horizon2020 Programme ...

Welsh students recognised for smashing 1,000 mph Supersonic Cymru challenge using supercomputing skills ...

4th PRACE Implementation Phase project to hold kick-off meeting ...

Researchers find the 'key' to quantum network solution ...

How the brain makes decisions ...

CoolIT Systems successfully deploys liquid-cooled solution to Poznan Supercomputing & Networking Center in partnership with Huawei and Itprojekt ...

USFlash

Scientists from IBM Research and Australian Universities reveal new insight on the molecular structure of plants ...

IBM invests in WayBlazer and Sellpoints to advance Watson powered apps in online travel and shopping ...

University of Central Oklahoma selects Advanced Clustering to build 'Buddy' supercomputer ...

Parallella is building a supercomputer and you can help ...

Rescale launches ScaleX Enterprise for turn-key deployment of Cloud HPC and simulation platform ...

Computing at the speed of light ...

Application acceleration start-up Bitfusion named Disrupt 2015 Battlefield finalist, closes $1.45 million in seed funding ...

Cooling the Cloud: Binghamton Ph.D. student sets sights on improving data-centre efficiency ...

HP partners with Tsinghua to create a Chinese technology powerhouse ...

Researchers find the 'key' to quantum network solution

25 May 2015 York - Scientists at the University of York's Centre for Quantum Technology have made an important step in establishing scalable and secure high rate quantum networks. Working with colleagues at the Technical University of Denmark (DTU), Massachusetts Institute of Technology (MIT), and the University of Toronto, they have developed a protocol to achieve key-rates at metropolitan distances at three orders-of-magnitude higher than previously.

Standard protocols of Quantum Key Distribution (QKD) exploit random sequences of quantum bits (qubits) to distribute secret keys in a completely secure fashion. Once these keys are shared by two remote parties, they can communicate confidentially by encrypting and decrypting binary messages. The security of the scheme relies on one of the most fundamental laws of quantum physics, the uncertainty principle.

Today's classical communications by e-mail or phone are vulnerable to eavesdroppers but quantum communications based on single particle levels (photons) can easily detect eavesdroppers because they invariably disrupt or perturb a quantum signal. By making quantum measurements, two remote parties can estimate how much information an eavesdropper is stealing from the channel and can apply suitable protocols of privacy amplification to negate the effects of the information loss.

However, the problem with QKD protocols based on simple quantum systems, such as single-photon qubits, is their low key-rate, despite their effectiveness in working over long distances. This makes them unsuitable for adaptation for use in metropolitan networks.

The team, led by Dr. Stefano Pirandola, of the Department of Computer Science at York, overcame this problem, both theoretically and experimentally, using continuous-variable quantum systems. These allow the parallel transmission of many qubits of information while retaining the quantum capability of detecting and defeating eavesdroppers. The research is published inNature Photonics.

Dr. Pirandola stated: "You want a high rate and a fast connection particularly for systems that serve a metropolitan area. You have to transmit a lot of information in the fastest possible way; essentially you need a quantum equivalent of broadband."

"Continuous-variable systems can use many more photons but are still quantum based. Our system reaches extremely high speeds by three orders of magnitude higher than ever before over a distance of 25 kilometres. Its effectiveness above that distance decreases rapidly however. Nevertheless, our protocol could be used to build high-rate quantum networks where devices securely connect to nearby access points or proxy servers."

Dr. Pirandola was funded by the Engineering and Physical Sciences Research Council.

The University of York leads a unique collaboration to exploit fundamental laws of quantum physics for the development of secure communication technologies and services for consumer, commercial and government markets. The Quantum Communications Hub is one of four in the EPSRC's new GBP 155 million National Network of Quantum Technology Hubs.
Source: University of York

Back to Table of contents

Primeur weekly 2015-05-26

Exascale supercomputing

House passes two Hultgren bills to promote technological innovation, manufacturing, "exascale" supercomputing ...

The Cloud

Mellanox collaborates with Supermicro to deliver CloudX-based hyper-converged infrastructure ...

IBM and United Business Group partner to accelerate hybrid Cloud adoption in Kuwait ...

IBM delivers broadest set of OpenStack services ...

EuroFlash

Transinsight wins German public tender for the National Academy of Sciences - Leopoldina for creating a semantic search engine on demographic change ...

Call for Papers: Women in HPC Workshop for early career researchers in HPC, in collaboration with ISC High Performance 2015 ...

Cardiff researchers join the hunt for 'elusive' gravitational waves ...

MAGIC is officially approved by European Commission's Horizon2020 Programme ...

Welsh students recognised for smashing 1,000 mph Supersonic Cymru challenge using supercomputing skills ...

4th PRACE Implementation Phase project to hold kick-off meeting ...

Researchers find the 'key' to quantum network solution ...

How the brain makes decisions ...

CoolIT Systems successfully deploys liquid-cooled solution to Poznan Supercomputing & Networking Center in partnership with Huawei and Itprojekt ...

USFlash

Scientists from IBM Research and Australian Universities reveal new insight on the molecular structure of plants ...

IBM invests in WayBlazer and Sellpoints to advance Watson powered apps in online travel and shopping ...

University of Central Oklahoma selects Advanced Clustering to build 'Buddy' supercomputer ...

Parallella is building a supercomputer and you can help ...

Rescale launches ScaleX Enterprise for turn-key deployment of Cloud HPC and simulation platform ...

Computing at the speed of light ...

Application acceleration start-up Bitfusion named Disrupt 2015 Battlefield finalist, closes $1.45 million in seed funding ...

Cooling the Cloud: Binghamton Ph.D. student sets sights on improving data-centre efficiency ...

HP partners with Tsinghua to create a Chinese technology powerhouse ...