Back to Table of contents

Primeur weekly 2014-05-26

Special

The N4S Programme is building new infrastructure for industrial software applications ...

The Sprint-model in large projects ...

Interview with David Wallom about the launch of the Federated Cloud as a production service ...

David Wallom to recommend the EGI Federated Cloud as a production IaaS infrastructure for the European Economic Area ...

The Cloud

Fujitsu enhances suite of private Cloud platform products with support for OpenStack ...

Oracle Managed Cloud Services earns elite status for federal deployments ...

SoftLayer helps Mankind Pharma drive business growth ...

EuroFlash

Bull aims at delivering operational excellence for IT Departments ...

Computer models helping unravel the science of life? ...

Improved computer simulations enable better calculation of interfacial tension ...

Atos to acquire Bull to create a European global leader in Cloud, Cybersecurity, and Big Data ...

USFlash

TDC provides core video expertise for largest-ever light festival Vivid Sydney ...

Scientists study biomechanics behind amazing ant strength ...

The University of Tsukuba in Japan puts additional Cray CS300 cluster supercomputer into production ...

Mellanox collaborates with DataON to provide Cluster-in-a-Box storage appliance ...

Supermicro announces storage solutions optimized for extreme scale-out object-storage applications ...

Don't blink: NIST studies why quantum dots suffer from 'fluorescence intermittency' ...

Red Hat delivers powerful new capabilities in OpenShift Enterprise 2.1 ...

Inventors of Analytics System forerunner inducted into National Inventors Hall of Fame ...

UChicago to lead quantum engineering research team ...

New analysis eliminates a potential speed bump in quantum computing ...

Advance brings 'hyperbolic metamaterials' closer to reality ...

NIWA supercomputer back on-line ...

New analysis eliminates a potential speed bump in quantum computing


Tom Wong, UC San Diego
20 May 2014 San Diego - A quantum particle can search for an item in an unsorted "database" by jumping from one item to another in superposition, and it does so faster than a classical computer ever could. This assertion assumes, however, that the particle can directly hop from any item to any other. Any restriction on which items the particle can directly hop to could slow down the search.

"Intuition says that a symmetric database allows the particle to hop freely enough to retain the quantum speed-up, but our research has shown this intuition to be false", stated Tom Wong, a physicist at the University of California, San Diego.

In a paper accepted for publication by Physical Review Letters, the researchers used a technique familiar to physicists called "degenerate perturbation theory" in a novel way to prove that global symmetry is not required for a sped up search.

Information scientists represent the database to be searched as a graph. In globally symmetric graphs, the nodes can be swapped with each other such that the connections between them are preserved. "Strongly regular graphs" don't share this property, but this analysis shows they also support a fast search through local symmetries.

Their finding extends the use of this theory to the field of quantum information science and expands the kinds of data structures on which quantum computing outperforms classical computing.

Jonatan Janmark, KTH Royal Institute of Technology in Stockholm, Sweden and UC San Diego's Department of Mathematics and David Meyer, professor of mathematics at UC San Diego co-authored the work.

The Defense Advanced Research Projects Agency partially supported this work as part of its Quantum Entanglement Science and Technology programme. Additional funding came from the Air Force Office of Scientific Research as part of the Transformational Computing in Aerospace Science and Engineering Initiative, and the Achievement Awards for College Scientists Foundation.
Source: University of California - San Diego

Back to Table of contents

Primeur weekly 2014-05-26

Special

The N4S Programme is building new infrastructure for industrial software applications ...

The Sprint-model in large projects ...

Interview with David Wallom about the launch of the Federated Cloud as a production service ...

David Wallom to recommend the EGI Federated Cloud as a production IaaS infrastructure for the European Economic Area ...

The Cloud

Fujitsu enhances suite of private Cloud platform products with support for OpenStack ...

Oracle Managed Cloud Services earns elite status for federal deployments ...

SoftLayer helps Mankind Pharma drive business growth ...

EuroFlash

Bull aims at delivering operational excellence for IT Departments ...

Computer models helping unravel the science of life? ...

Improved computer simulations enable better calculation of interfacial tension ...

Atos to acquire Bull to create a European global leader in Cloud, Cybersecurity, and Big Data ...

USFlash

TDC provides core video expertise for largest-ever light festival Vivid Sydney ...

Scientists study biomechanics behind amazing ant strength ...

The University of Tsukuba in Japan puts additional Cray CS300 cluster supercomputer into production ...

Mellanox collaborates with DataON to provide Cluster-in-a-Box storage appliance ...

Supermicro announces storage solutions optimized for extreme scale-out object-storage applications ...

Don't blink: NIST studies why quantum dots suffer from 'fluorescence intermittency' ...

Red Hat delivers powerful new capabilities in OpenShift Enterprise 2.1 ...

Inventors of Analytics System forerunner inducted into National Inventors Hall of Fame ...

UChicago to lead quantum engineering research team ...

New analysis eliminates a potential speed bump in quantum computing ...

Advance brings 'hyperbolic metamaterials' closer to reality ...

NIWA supercomputer back on-line ...