Quantum Metrology Enhanced by Repetitive Quantum Error Correction
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Author
Unden, Thomas
Balasubramanian, Priya
Louzon, Daniel
Vinkler, Yuval
Plenio, Martin B.
Markham, Matthew
Twitchen, Daniel
Stacey, Alastair
Lovchinsky, Igor
Sushkov, Alexander O.
Lukin, Mikhail D.
Retzker, Alex
Naydenov, Boris
McGuinness, Liam P.
Jelezko, Fedor
Published Version
https://doi.org/10.1103/PhysRevLett.116.230502Metadata
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Unden, Thomas, Priya Balasubramanian, Daniel Louzon, Yuval Vinkler, Martin B. Plenio, Matthew Markham, Daniel Twitchen, et al. 2016. “Quantum Metrology Enhanced by Repetitive Quantum Error Correction.” Physical Review Letters 116 (23). https://doi.org/10.1103/physrevlett.116.230502.Abstract
We experimentally demonstrate the protection of a room-temperature hybrid spin register against environmental decoherence by performing repeated quantum error correction whilst maintaining sensitivity to signal fields. We use a long-lived nuclear spin to correct multiple phase errors on a sensitive electron spin in diamond and realize magnetic field sensing beyond the time scales set by natural decoherence. The universal extension of sensing time, robust to noise at any frequency, demonstrates the definitive advantage entangled multiqubit systems provide for quantum sensing and offers an important complement to quantum control techniques.Terms of Use
This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAPCitable link to this page
http://nrs.harvard.edu/urn-3:HUL.InstRepos:41461279
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