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Robust control of entanglement in a nitrogen-vacancy center coupled to a ¹³C nuclear spin in diamond

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/47717

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Title: Robust control of entanglement in a nitrogen-vacancy center coupled to a ¹³C nuclear spin in diamond
Related: Physical review A, Vol. 80, Issue 3, p.032303-1-032303-7
DOI: 10.1103/PhysRevA.80.032303
Publisher: American Physical Society
Date: 2009
FoR/RFCD Code(s): 020201 Atomic and Molecular Physics 020603 Quantum Information, Computation and Communication
Author/Creator: Said, R. S
Author/Creator: Twamley, J
Description: We address the problem of generating a robust entangling gate between electronic and nuclear spins in a system of a single nitrogen-vacancy center coupled to a nearest ¹³C atom in diamond against certain types of systematic errors such as pulse-length and off-resonance errors. We analyze the robustness of various control schemes: sequential pulses, composite pulses and numerically optimized pulses. We find that numerically optimized pulses, produced by the modified gradient ascent pulse engineering (GRAPE) algorithm, are more robust than the composite pulses and the sequential pulses. The optimized pulses can also be implemented in a faster time than the composite pulses.
Description: 7 page(s)
Subject Keyword: 020201 Atomic and Molecular Physics
Subject Keyword: 020603 Quantum Information, Computation and Communication
Subject Keyword: defect states
Subject Keyword: diamond
Subject Keyword: errors
Subject Keyword: quantum entanglement
Subject Keyword: vacancies (crystal)
Resource Type: journal article
Organisation: Macquarie University. Dept. of Physics

Identifier: http://hdl.handle.net/1959.14/47717
Identifier: ISSN:1050-2947
Identifier: mq-rm-2008004792
Language: eng
Rights: Said, R. S. and Twamley, J., Physical Review A, Vol. 80, article no. 032303, 2009. Copyright 2009 by the American Physical Society. The original article can be found at http://dx.doi.org/10.1103/PhysRevA.80.032303.
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