Optical switch for quantum computing

Summary of newsworthy paper: Optical switch for quantum computing

This press release contains a summary of newsworthy paper:

Optical switch for quantum computing

Mention of papers to be published at the same time
Geographical listing of authors

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[1] Optical switch for quantum computing
DOI: 10.1038/ncomms1378

A simple optically controlled switch for nuclear spin-spin (inter-qubit) couplings in semiconductor-based quantum computers is described in Nature Communications this week. Such coupling is expected to have an essential role in the quantum gate operations of solid-state nuclear magnetic resonance (NMR) quantum computers in the future.

Two-quibit operation is an essential part of quantum computation, but difficult to achieve. Solid-state NMR quantum computing—one of the most advanced testbeds for quantum computation—requires a switchable inter-quibit coupling to control entanglements. Atsushi Goto and colleagues introduce optically controllable internuclear coupling in semiconductors providing a simple way of switching inter-qubit couplings in semiconductor-based quantum computers. The strength of coupling can be adjusted externally through light power, allowing easy implementation of on/off switching.

CONTACT
Atsushi Goto (National Institute for Materials Science, Ibaraki, Japan)
Tel: +81 29 863 5513; E-mail: [email protected]

Papers to go live at the same time:

[2] Identification and characterization of a multidomain hyperthermophilic cellulase from an archaeal enrichment
DOI: 10.1038/ncomms1373

[3] Onset of a quantum phase transition with a trapped ion quantum simulator
DOI: 10.1038/ncomms1374

[4] Using disorder to detect locally ordered electron nematics via hysteresis
DOI: 10.1038/ncomms1375

[5] Tonic excitation or inhibition is set by GABAA conductance in hippocampal interneurons
DOI: 10.1038/ncomms1377

[6] Experimental coevolution of male and female genital morphology
DOI: 10.1038/ncomms1379

[7] Identification of the PGRMC1 protein complex as the putative sigma-2 receptor binding site
DOI: 10.1038/ncomms1386

[8] Hierarchical MnMoO4 / CoMoO4 heterostructured nanowires with enhanced supercapacitor performance
DOI: 10.1038/ncomms1387

GEOGRAPHICAL LISTING OF AUTHORS…
The following list of places refers to the whereabouts of authors on the papers numbered in this release. For example, London: 4 - this means that on paper number four, there will be at least one author affiliated to an institute or company in London. The listing may be for an author's main affiliation, or for a place where they are working temporarily. Please see the PDF of the paper for full details.

AUSTRALIA
Crawley: 5
CHINA
Wuhan: 7
JAPAN
Wako: 4

NEW ZEALAND
Auckland: 2

UNITED KINGDOM
London: 4

UNITED STATES OF AMERICA
California
Berkeley: 1
District of Columbia
Washington: 2
Illinois
Urbana-Champaign: 3
Indiana
West Lafayette: 3
Massachusetts
Cambridge: 7
Maryland
Baltimore: 1
College Park: 2
Michigan
Ann Arbor: 2
Missouri
St Louis: 6
North Carolina
Winston-Salem: 6

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From North America and Canada
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Tel: +1 212 726 9231; E-mail: [email protected]

From Japan, Korea, China, Singapore and Taiwan
Mika Nakano, Nature Tokyo
Tel: +81 3 3267 8751; E-mail: [email protected]

From the UK
Rachel Twinn, Nature, London
Tel: +44 20 7843 4658; E-mail: [email protected]

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Published: 05 Jul 2011

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