Complete State Reconstruction of a Two-Mode Gaussian State via Local Operations and Classical Communication
arXiv:0807.1362 · doi:10.1103/PhysRevA.79.030302
Abstract
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.
4 pages, 1 figure, double column RevTex4; v2: presentation improved, references updated
References in corpus (13)
- Quantum information with continuous variables
- Peres-Horodecki separability criterion for continuous variable systems
- Entanglement in continuous variable systems: Recent advances and current perspectives
- Entanglement of two-mode Gaussian states: characterization and experimental production and manipulation
- Full characterization of Gaussian bipartite entangled states by a single homodyne detector
- Homodyne tomography characterization and nonlocality of a dual-mode optical qubit
- Demonstration of deterministic and high fidelity squeezing of quantum information
- A characterization of continuous variable entanglement
- Characterization of bipartite states using a single homodyne detector
- Universal homodyne tomography with a single local oscillator
- Reconstruction of the joint state of a two-mode Bose-Einstein condensate
- Minimal set of local measurements and classical communication for two-mode Gaussian state entanglement quantification
- Physical properties of the Schur complement of local covariance matrices