Quantum transitions induced by the third cumulant of current fluctuations

T. Ojanen; T. T. Heikkila

doi:10.1103/physrevb.73.020501

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Quantum transitions induced by the third cumulant of current fluctuations

T. Ojanen·T. T. Heikkila

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Abstract

We investigate the transitions induced by external current fluctuations on a small probe quantum system. The rates for the transitions between the energy states are calculated using the real-time Keldysh formalism for the density matrix evolution. We especially detail the effects of the third cumulant of current fluctuations inductively coupled to a quantum bit and propose a setup for detecting the frequency-dependent third cumulant through the transitions it induces.

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T. Ojanen, T. T. Heikkila. 2005-10-14. Quantum transitions induced by the third cumulant of current fluctuations. https://doi.org/10.1103/physrevb.73.020501

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