Laser cooling and real-time measurement of the nuclear spin environment of a solid-state qubit

E. Togan, Y. Chu, A. Imamoglu and M. D. Lukin ()
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E. Togan: Harvard University
Y. Chu: Harvard University
A. Imamoglu: Institute for Quantum Electronics, ETH-Zurich, CH-8093 Zurich, Switzerland
M. D. Lukin: Harvard University

Nature, 2011, vol. 478, issue 7370, 497-501

Abstract: Solid control A Swiss–US collaboration demonstrates that quantum optical techniques, conventionally used for cooling, measurement and control of isolated atoms and ions, can be applied to control the quantum dynamics of the many-body environment of solid-state qubits — an important goal in quantum science and engineering. Specifically, all-optical manipulation of the electronic spin of an individual nitrogen-vacancy colour centre in diamond (involving dark-resonances and coherent population trapping) was used to produce optical cooling, real-time projective measurement and control of surrounding nuclear spin ensembles. Potential applications range from all-optical nanomagnetometry to quantum feedback control of solid-state qubits.

Date: 2011
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DOI: 10.1038/nature10528

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