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Primeur weekly 2011-09-05

Exascale supercomputing

Intel forms new subsidiary focused on HPC: Intel Federal LLC ...

The Cloud

VMware and Cisco collaborate on Cloud innovation ...

Dell launches its first public Cloud offering; Dell Cloud with VMware vCloud Datacenter Service ...

Harris Corporation and VMware to deliver trusted enterprise Cloud to federal and commercial customers ...

NetApp and VMware help transform IT and make Cloud a reality ...

Symantec and VMware announce strategic partnership to deliver Desktop-as-a-Service solutions ...

New VMware vCloud offerings accelerate journey to the enterprise hybrid Cloud ...

VMware introduces new platform for enterprise Database as a Service ...

HP speeds and simplifies virtual infrastructure deployments ...

Cisco to provide Hosted Collaboration Solution for NTT Communications Cloud-based Unified Communications Service ...

EuroFlash

PRACE to organize Autumn School 2011, 25-27 October 2011 in Bruyères-le-Châtel, France ...

Kolkata institute inks accord with CERN ...

The quantum tunneling effect leads electron transport in porphyrins ...

Graphene's shining light could lead to super-fast Internet ...

USFlash

IBM expands power licensing as leading developers eye new applications ...

IBM and Jeopardy! relive history with encore presentation of Jeopardy!: The IBM challenge ...

VBI and Convey Computer partner to deliver technology to biomedical, life sciences researchers ...

Astrophysicists report first simulation to create a Milky Way-like galaxy ...

NIST achieves record-low error rate for quantum information processing with one qubit ...

Director appointed for New Zealand eScience Infrastructre ...

Berkeley scientists discover an 'instant cosmic classic' supernova ...

IEEE Xplore digital library reaches three million documents as pace of technical contributions accelerates ...

Oracle achieves world record result on SAP Assemble-to-Order (ATO) Standard Application Benchmark ...

UCSB physicists demonstrate the quantum von Neumann architecture ...

NIST achieves record-low error rate for quantum information processing with one qubit

31 Aug 2011 Gaithersburg - Thanks to advances in experimental design, physicists at the National Institute of Standards and Technology (NIST) have achieved a record-low probability of error in quantum information processing with a single quantum bit (qubit) - the first published error rate small enough to meet theoretical requirements for building viable quantum computers.

A quantum computer could potentially solve certain problems that are intractable using today's technology, even supercomputers. The NIST experiment with a single beryllium ion qubit, described in a forthcoming paper, is a milestone for simple quantum logic operations. However, a working quantum computer also will require two-qubit logic operations with comparably low error rates.

"One error per 10,000 logic operations is a commonly agreed upon target for a low enough error rate to use error correction protocols in a quantum computer", explained Kenton Brown, who led the project as a NIST postdoctoral researcher. "It is generally accepted that if error rates are above that, you will introduce more errors in your correction operations than you are able to correct. We've been able to show that we have good enough control over our single-qubit operations that our probability of error is 1 per 50,000 logic operations."

The NIST experiment was performed on 1,000 unique sequences of logic operations randomly selected by computer software. Sequences of 10 different lengths, ranging from one to 987 operations, were repeated 100 times each. The measured results were compared to perfect theoretical outcomes. The maximum length of the sequences was limited by the hardware used to control the experiment.

The record low error rate was made possible by two major changes in the group's experimental setup. First, scientists manipulated the ion using microwaves instead of the usual laser beams. A microwave antenna was incorporated into the ion trap, with the ion held close by, hovering 40 micrometers above the trap surface. The use of microwaves reduced errors caused by instability in laser beam pointing and power, as well as spontaneous ion emissions. Second, the ion trap was placed inside a copper vacuum chamber and cooled to 4.2 K with a helium bath to reduce errors caused by magnetic field fluctuations in the lab.

Brown now works at the Georgia Institute of Technology. Co-author Christian Ospelkaus contributed to the research while at NIST and is now at research institutions in Germany. The research was supported in part by the Intelligence Advanced Research Projects Activity, the National Security Agency, the Defense Advanced Research Projects Agency and the Office of Naval Research.

K.R. Brown, A.C. Wilson, Y. Colombe, C. Ospelkaus, A.M. Meier, E. Knill, D. Leibfried and D. J. Wineland are the authors of the 2011 paper "Single-qubit gate error below 10-4 in a trapped ion", to appear inPhysical Review Aforthcoming. The preprint available at http://arxiv.org/abs/1104.2552
Source: National Institute of Standards and Technology - NIST

Back to Table of contents

Primeur weekly 2011-09-05

Exascale supercomputing

Intel forms new subsidiary focused on HPC: Intel Federal LLC ...

The Cloud

VMware and Cisco collaborate on Cloud innovation ...

Dell launches its first public Cloud offering; Dell Cloud with VMware vCloud Datacenter Service ...

Harris Corporation and VMware to deliver trusted enterprise Cloud to federal and commercial customers ...

NetApp and VMware help transform IT and make Cloud a reality ...

Symantec and VMware announce strategic partnership to deliver Desktop-as-a-Service solutions ...

New VMware vCloud offerings accelerate journey to the enterprise hybrid Cloud ...

VMware introduces new platform for enterprise Database as a Service ...

HP speeds and simplifies virtual infrastructure deployments ...

Cisco to provide Hosted Collaboration Solution for NTT Communications Cloud-based Unified Communications Service ...

EuroFlash

PRACE to organize Autumn School 2011, 25-27 October 2011 in Bruyères-le-Châtel, France ...

Kolkata institute inks accord with CERN ...

The quantum tunneling effect leads electron transport in porphyrins ...

Graphene's shining light could lead to super-fast Internet ...

USFlash

IBM expands power licensing as leading developers eye new applications ...

IBM and Jeopardy! relive history with encore presentation of Jeopardy!: The IBM challenge ...

VBI and Convey Computer partner to deliver technology to biomedical, life sciences researchers ...

Astrophysicists report first simulation to create a Milky Way-like galaxy ...

NIST achieves record-low error rate for quantum information processing with one qubit ...

Director appointed for New Zealand eScience Infrastructre ...

Berkeley scientists discover an 'instant cosmic classic' supernova ...

IEEE Xplore digital library reaches three million documents as pace of technical contributions accelerates ...

Oracle achieves world record result on SAP Assemble-to-Order (ATO) Standard Application Benchmark ...

UCSB physicists demonstrate the quantum von Neumann architecture ...