Phys. Rev. B 64, 193407 (2001) [4 pages]Correlated quantum measurement of a solid-state qubitReceived 23 March 2001; published 12 October 2001 We propose a solid-state experiment to study the process of continuous quantum measurement of a qubit state. The experiment would verify that an individual qubit stays coherent during the process of measurement (in contrast to the gradual decoherence of the ensemble-averaged density matrix), thus confirming the possibility of qubit purification by continuous measurement. The experiment can be realized using quantum dots, single-electron transistors, or superconducting quantum interference devices. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.64.193407
DOI:
10.1103/PhysRevB.64.193407
PACS:
73.23.-b, 03.65.Ta
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