Feedback stabilization of pure states in quantum transport

Details Feedback stabilization of pure states in quantum transport Feedback stabilization of pure states in quantum transport

2011-03-14

arxiv.org/abs/1103.2710v2

Phys. Rev. B 84, 085302 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 5 figures

Scientific paper

10.1103/PhysRevB.84.085302

We propose a feedback control scheme for generating and stabilizing pure states of transport devices, such as charge qubits, under non-equilibrium conditions. The purification of the device state is conditioned on single electron jumps and leaves a clear signal in the full counting statistics which can be used to optimize control parameters. As an example of our control scheme, we are presenting the stabilization pure transport states in a double quantum dot setup with the inclusion of phonon dephasing.

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