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Phys Rev Lett. 2011 Apr 22;106(16):160501. Epub 2011 Apr 22.

Projective measurement of a single nuclear spin qubit by using two-mode cavity QED.

Author information

  • 1ERATO Macroscopic Quantum Control Project, JST, Tokyo, Japan.

Abstract

We report the implementation of projective measurement on a single 1/2 nuclear spin of the (171)Yb atom by measuring the polarization of cavity-enhanced fluorescence. To obtain cavity-enhanced fluorescence having a nuclear-spin-dependent polarization, we construct a two-mode cavity QED system, in which two cyclic transitions are independently coupled to each of the orthogonally polarized cavity modes, by manipulating the energy level of (171)Yb. This system can associate the nuclear spin degrees of freedom with the polarization of photons, which will facilitate the development of hybrid quantum systems.

PMID:
21599343
[PubMed]
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