Spontaneous Relaxation of a Charge Qubit under Electrical Measurement

Details Spontaneous Relaxation of a Charge Qubit under Electrical Measurement Spontaneous Relaxation of a Charge Qubit under Electrical Measurement

2004-08-11

arxiv.org/abs/quant-ph/0408073v2

Phys. Rev. Lett. 94, 066803 (2005)

Physics

Quantum Physics

4 pages, 2 figures; an error in Eq.(8) is corrected

Scientific paper

10.1103/PhysRevLett.94.066803

In this work we first derive a generalized conditional master equation for
quantum measurement by a mesoscopic detector, then study the readout
characteristics of qubit measurement where a number of new features are found.
The work would in particular highlight the qubit spontaneous relaxation effect
induced by the measurement itself rather than an external thermal bath.

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