Complete State Reconstruction of a Two-Mode Gaussian State via Local Operations and Classical Communication

Details Complete State Reconstruction of a Two-Mode Gaussian State via Local Operations and Classical Communication Complete State Reconstruction of a Two-Mode Gaussian State via Local Operations and Classical Communication

2008-07-09

arxiv.org/abs/0807.1362v2

Phys. Rev. A 79, 030302(R) (2009)

Physics

Quantum Physics

4 pages, 1 figure, double column RevTex4; v2: presentation improved, references updated

Scientific paper

10.1103/PhysRevA.79.030302

We propose a strictly local quantum tomography protocol for a bipartite system. We show that the joint density matrix of an arbitrary two-mode Gaussian state, entangled or not, is obtained via local operations and classical communication only. In contrast to previous proposals, simultaneous homodyne measurements (HM) on both modes are replaced by local homodyne detections and a set of local projective measurements.

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