APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011;
Dallas, Texas
Abstract: V3.00005 : Quantum control and decoherence of a single spin in diamond
10:24 AM–11:00 AM
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Nitrogen-vacancy (NV) impurity centers in diamond have
recently emerged as a unique platform for investigating
quantum dynamics and quantum control of single
spins in solid-state environments. NV centers demonstrate
an unusual combination of spin-dependent optical properties,
individual addressability, and long spin coherence times.
The NV spin state can be manipulated both optically and
magnetically, and very fast quantum control operations can be
performed with high fidelity [1,2]. Due to these
uniquely favorable properties, quantum dynamics of a single
NV spin can be investigated in great detail.
I will present the results of our work on decoherence of NV
spins by spin baths of atomic nitrogen impurities (P1
centers) and the spins of $^{13}$C nuclei, and discuss different
regimes of the decoherence dynamics. We will consider modern
dynamical decoupling techniques which aim at preserving
coherence of quantum spins, and the experimental
implementation of the decoupling protocols, as well as more
advanced quantum control of NV spins. Using a variety of
analytical and numerical tools, we can characterize and
optimize the factors which limit our control over these
quantum spin systems [2]. We will also examine how the
quantum control approaches can be used to elucidate the
quantum dynamics of NV centers and the properties of the
spin bath [3].
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[1] G. D. Fuchs, V. V. Dobrovitski, D. M. Toyli, F. J. Heremans,
and D. D. Awschalom, Science 326, 1520 (2009).\\[0pt]
[2] V. V. Dobrovitski, G. de Lange, D. Riste, and R. Hanson,
Phys. Rev. Lett. 105, 077601 (2010).\\[0pt]
[3] G. de Lange, Z. H. Wang, D. Riste, V. V. Dobrovitski, and R.
Hanson, Science 330, 60 (2010).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.V3.5