Quantum State Tomography of Complex Multimode Fields using Array Detectors

Details Quantum State Tomography of Complex Multimode Fields using Array Detectors Quantum State Tomography of Complex Multimode Fields using Array Detectors

2001-01-16

arxiv.org/abs/quant-ph/0101070v1

Physics

Quantum Physics

14 pages text and 3 figures. To be submitted to PRA

Scientific paper

10.1103/PhysRevA.63.063808

We demonstrate that it is possible to use the balanced homodyning with array detectors to measure the quantum state of correlated two-mode signal field. We show the applicability of the method to fields with complex mode functions, thus generalizing the work of Beck (Phys. Rev. Letts. 84, 5748 (2000)) in several important ways. We further establish that, under suitable conditions, array detector measurements from one of the two outputs is sufficient to determine the quantum state of signals. We show the power of the method by reconstructing a truncated Perelomov state which exhibits complicated structure in the joint probability density for the quadratures.

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