Phys. Rev. Lett. 100, 026804 (2008) [4 pages]Weak Values and the Leggett-Garg Inequality in Solid-State QubitsSee Also: Erratum Received 23 July 2007; published 16 January 2008 An implementation of weak values is investigated in solid-state qubits. We demonstrate that a weak value can be nonclassical if and only if a Leggett-Garg inequality can also be violated. Generalized weak values are described in which post-selection occurs on a range of weak measurement results. Imposing classical weak values permits the derivation of Leggett-Garg inequalities for bounded operators. Our analysis is presented in terms of kicked quantum nondemolition measurements on a quantum double-dot charge qubit. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.026804
DOI:
10.1103/PhysRevLett.100.026804
PACS:
73.23.−b, 03.65.Ta, 03.67.Lx
See AlsoErratum: Nathan S. Williams and Andrew N. Jordan, Erratum: Weak Values and the Leggett-Garg Inequality in Solid-State Qubits [Phys. Rev. Lett. 100, 026804 (2008)], Phys. Rev. Lett. 103, 089902 (2009). |
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