Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout

Physical Review Letters
D D SukachevM D Lukin

Abstract

The negatively charged silicon-vacancy (SiV^{-}) color center in diamond has recently emerged as a promising system for quantum photonics. Its symmetry-protected optical transitions enable the creation of indistinguishable emitter arrays and deterministic coupling to nanophotonic devices. Despite this, the longest coherence time associated with its electronic spin achieved to date (∼250  ns) has been limited by coupling to acoustic phonons. We demonstrate coherent control and suppression of phonon-induced dephasing of the SiV^{-} electronic spin coherence by 5 orders of magnitude by operating at temperatures below 500 mK. By aligning the magnetic field along the SiV^{-} symmetry axis, we demonstrate spin-conserving optical transitions and single-shot readout of the SiV^{-} spin with 89% fidelity. Coherent control of the SiV^{-} spin with microwave fields is used to demonstrate a spin coherence time T_{2} of 13 ms and a spin relaxation time T_{1} exceeding 1 s at 100 mK. These results establish the SiV^{-} as a promising solid-state candidate for the realization of quantum networks.

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Citations

Jan 6, 2018·Physical Review Letters·Takayuki IwasakiMutsuko Hatano
Apr 28, 2019·Nature Communications·Roland NagyJörg Wrachtrup
Jan 12, 2020·Nature Communications·Smarak MaityMarko Lončar
Sep 8, 2018·Physical Review Letters·Shuo SunJelena Vučković
Mar 2, 2019·Physical Review Letters·Christian WeinzetlChristoph Becher
Feb 1, 2020·Physical Review Letters·Matthew E TrusheimDirk Englund
Apr 2, 2020·Nature Communications·Mouktik RahaJeff D Thompson
Jun 9, 2018·Physical Review Letters·M-A LemondeP Rabl
May 24, 2018·Nature Communications·Young-Ik SohnMarko Lončar
May 31, 2019·Physical Review Letters·Mathias H MetschFedor Jelezko
Dec 11, 2019·Nature Communications·Carlo BradacIgor Aharonovich
Jun 27, 2018·Scientific Reports·Hiroya SasakiKazutaka G Nakamura
Jan 16, 2019·Nature Communications·Annemarie L ExarhosLee C Bassett
Nov 7, 2019·Optics Express·Ignas Lekavicius, Hailin Wang
Nov 26, 2019·Physical Review Letters·C T NguyenM D Lukin
May 7, 2019·Science Advances·M J CraneP J Pauzauskie
Sep 7, 2019·Physical Review Letters·E T KhabiboullineM D Lukin
Feb 27, 2018·Physical Review Letters·Jonas N BeckerChristoph Becher
Dec 17, 2020·Chemical Reviews·Kade Head-MarsdenPrineha Narang
Dec 30, 2020·Chemical Reviews·Cherie R KaganSarah M Thompson
Apr 7, 2021·Optics Express·Pei-Shun YanYu-Bo Sheng
Apr 21, 2021·Scientific Reports·Yuri N PalyanovDenis V Nechaev
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Jun 11, 2021·Physical Review Letters·Xing-Liang DongFranco Nori
Jun 12, 2021·Physical Review Letters·Christopher L SmallwoodSteven T Cundiff
Nov 20, 2020·Journal of the American Chemical Society·Majed S FataftahDanna E Freedman
Feb 13, 2020·Chemical Reviews·Michael N R AshfoldChloe V Peaker
Aug 21, 2021·Nanotechnology·Masazumi Fujiwara, Yutaka Shikano
Dec 14, 2021·Nano Letters·Xinghan GuoAlexander A High

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