Quantum state tomography with quantum shotnoise

Details Quantum state tomography with quantum shotnoise Quantum state tomography with quantum shotnoise

2005-06-17

arxiv.org/abs/cond-mat/0506446v1

Phys. Rev. B 73, 041305 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.73.041305

We propose a scheme for a complete reconstruction of one- and two-particle orbital quantum states in mesoscopic conductors. The conductor in the transport state continuously emits orbital quantum states. The orbital states are manipulated by electronic beamsplitters and detected by measurements of average currents and zero frequency current shotnoise correlators. We show how, by a suitable complete set of measurements, the elements of the density matrices of the one- and two-particle states can be directly expressed in terms of the currents and current correlators.

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