Coherence of an Optically Illuminated Single Nuclear Spin Qubit

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Coherence of an Optically Illuminated Single Nuclear Spin Qubit

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Title: Coherence of an Optically Illuminated Single Nuclear Spin Qubit
Author: Childress, Lily; Cappellaro, Paola; Jiang, Liang; Dutt, M. V. Gurudev; Togan, Emre Ismail Cengiz; Taylor, Jacob Mason; Lukin, Mikhail D.

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Citation: Jiang, Liang, M. V. Gurudev Dutt, Emre Ismail Cengiz Togan, Lily Childress, Paola Cappellaro, Jacob Mason Taylor, and Mikhail D. Lukin. 2008. Coherence of an optically illuminated single nuclear spin qubit. Physical Review Letters 100(7): 073001.
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Abstract: We investigate the coherence properties of individual nuclear spin quantum bits in diamond [Dutt et al., Science, 316, 1312 (2007)] when a proximal electronic spin associated with a nitrogen-vacancy (NV) center is being interrogated by optical radiation. The resulting nuclear spin dynamics are governed by time-dependent hyperfine interaction associated with rapid electronic transitions, which can be described by a spin-fluctuator model. We show that due to a process analogous to motional averaging in nuclear magnetic resonance, the nuclear spin coherence can be preserved after a large number of optical excitation cycles. Our theoretical analysis is in good agreement with experimental results. It indicates a novel approach that could potentially isolate the nuclear spin system completely from the electronic environment.
Published Version: doi:10.1103/PhysRevLett.100.073001
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