Quantum Metrology Enhanced by Repetitive Quantum Error Correction

Thomas Unden; Priya Balasubramanian; Daniel Louzon; Yuval Vinkler; Martin B. Plenio; Matthew Markham; Daniel Twitchen; Alastair Stacey; Igor Lovchinsky; Alexander O. Sushkov; Mikhail D. Lukin; Alex Retzker; Boris Naydenov; Liam P. McGuinness; Fedor Jelezko

doi:10.1103/PhysRevLett.116.230502

Quantum Metrology Enhanced by Repetitive Quantum Error Correction

Thomas Unden, Priya Balasubramanian, Daniel Louzon, Yuval Vinkler, Martin B. Plenio, Matthew Markham, Daniel Twitchen, Alastair Stacey, Igor Lovchinsky, Alexander O. Sushkov, Mikhail D. Lukin, Alex Retzker, Boris Naydenov, Liam P. McGuinness, Fedor Jelezko

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

140 Scopus citations

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.

Original language	English
Article number	230502
Journal	Physical Review Letters
Volume	116
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.116.230502
State	Published - 9 Jun 2016

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© 2016 American Physical Society.

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Unden, T., Balasubramanian, P., Louzon, D., Vinkler, Y., Plenio, M. B., Markham, M., Twitchen, D., Stacey, A., Lovchinsky, I., Sushkov, A. O., Lukin, M. D., Retzker, A., Naydenov, B., McGuinness, L. P., & Jelezko, F. (2016). Quantum Metrology Enhanced by Repetitive Quantum Error Correction. Physical Review Letters, 116(23), Article 230502. https://doi.org/10.1103/PhysRevLett.116.230502

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AU - Markham, Matthew

AU - Twitchen, Daniel

AU - Stacey, Alastair

AU - Lovchinsky, Igor

AU - Sushkov, Alexander O.

AU - Lukin, Mikhail D.

AU - Retzker, Alex

AU - Naydenov, Boris

AU - McGuinness, Liam P.

AU - Jelezko, Fedor

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Quantum Metrology Enhanced by Repetitive Quantum Error Correction

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