APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011;
Dallas, Texas
Abstract: P15.00005 : Excited-State Spin Manipulation and Intrinsic Nuclear Spin Memory using Single Nitrogen-Vacancy Centers in Diamond
9:12 AM–9:48 AM
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Nitrogen vacancy (NV) center spins in diamond have emerged as a
promising
solid-state system for quantum information processing and precision
metrology at room temperature. Understanding and developing the
built-in
resources of this defect center for quantum logic and memory is
critical to
achieving these goals. In the first case, we use nanosecond duration
microwave manipulation to study the electronic spin of single NV
centers in
their orbital excited-state (ES) [1]. We demonstrate ES Rabi
oscillations
and use multi-pulse resonant control to differentiate between
phonon-induced
dephasing, orbital relaxation, and coherent electron-nuclear
interactions. A
second resource, the nuclear spin of the intrinsic nitrogen atom,
may be an
ideal candidate for a quantum memory due to both the long
coherence of
nuclear spins and their deterministic presence. We investigate
coherent
swaps between the NV center electronic spin state and the nuclear
spin state
of nitrogen using Landau-Zener transitions performed outside the
asymptotic
regime [2]. The swap gates are generated using lithographically
fabricated
waveguides that form a high-bandwidth, two-axis vector magnet on
the diamond
substrate. These experiments provide tools for coherently
manipulating and
storing quantum information in a scalable solid-state system at room
temperature.
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[1] G. D. Fuchs, V. V. Dobrovitski, D. M. Toyli, F. J. Heremans,
C. D. Weis, T. Schenkel, and D.D. Awschalom, \textit{Nat. Phys.}
\textbf{6}, 668 (2010).
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[2] G. D. Fuchs, G. Burkard, P. Klimov, and D. D. Awschalom,
\textit{in preparation}.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.P15.5