2007/07/31 by Liang Jiang, M. V. Gurudev Dutt, Meenakshi Dutt +6 · 2 citations
Materials Science · Physics and Astronomy · #Advanced Fiber Laser Technologies #Atomic physics #Coherence (philosophical gambling strategy) #Coherence time #Condensed matter physics #Diamond #Diamond and Carbon-based Materials Research #Excitation #Hyperfine structure #Materials science #Physics #Quantum #Quantum mechanics #Quantum optics and atomic interactions #Qubit #Spin (aerodynamics) #Spin engineering #Spin polarization #quant-ph
paper · pdf · doi:10.1103/physrevlett.100.073001
published as Phys. Rev. Lett. 100, 073001 (2008) · 5 pages, 2 figures
openalex publication_date 2008/02/19 · arxiv created 2008/02/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the coherence properties of individual nuclear spin quantum bits in diamond [Dutt, Science 316, 1312 (2007)10.1126/science.1139831] when a proximal electronic spin associated with a nitrogen-vacancy (N-V) 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.