Experimentally realizable characterizations of continuous variable Gaussian states
arXiv:quant-ph/0206037 · doi:10.1103/PhysRevA.66.030301
Abstract
Measures of entanglement, fidelity and purity are basic yardsticks in quantum information processing. We propose how to implement these measures using linear devices and homodyne detectors for continuous variable Gaussian states. In particular, the test of entanglement becomes simple with some prior knowledge which is relevant to current experiments.
4 pages, This paper supersedes quant-ph/0203151
References in corpus (4)
- A computable measure of entanglement
- Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement
- Generation of Continuous Variable Einstein-Podolsky-Rosen Entanglement via the Kerr Nonlinearity in an Optical Fibre
- Exploring Hilbert Space: accurate characterisation of quantum information
Cited by in corpus (35)
- Quantum information with continuous variables
- Detecting genuine multipartite continuous-variable entanglement
- Dissipative Phase Transition in Central Spin Systems
- Creating and probing macroscoping entanglement with light
- Markovian Master Equations: A Critical Study
- Recent developments in photon-level operations on travelling light fields
- Generation of entangled coherent states via cross phase modulation in a double electromagnetically induced transparency regime
- Purity of Gaussian states: measurement schemes and time-evolution in noisy channels
- Nonclassicality of a photon-subtracted Gaussian field
- Determination of continuous variable entanglement by purity measurements
- Complete conditions for entanglement transfer
- Quantitative measures of entanglement in pair coherent states
- A characterization of continuous variable entanglement
- Dynamical entanglement-transfer for quantum information networks
- How to measure squeezing and entanglement of Gaussian states without homodyning
- Environment-induced two-mode entanglement in quantum Brownian motion
- Squeezed Fock state by inconclusive photon subtraction
- Pulsed squeezed vacuum characterization without homodyning
- Distinguishing two single-mode Gaussian states by homodyne detection: An information-theoretic approach
- Testing Bell inequalities with photon-subtracted Gaussian states
- Entanglement between Collective Operators in a Linear Harmonic Chain
- Multiparameter Quantum Estimation Theory in Quantum Gaussian states
- On the P-representable subset of all bipartite Gaussian separable states
- Entanglement between smeared field operators in the Klein-Gordon vacuum
- Characterization and quantification of symmetric Gaussian state entanglement through a local classicality criterion
- Role of many-body entanglement in decoherence processes
- Entanglement generation in harmonic chains: tagging by squeezing
- Generalized overlap quantum state tomography
- Entanglement of mixed macroscopic superpositions: an entangling-power study
- Quantum Dense Coding Network using Multimode Squeezed States of Light
- Linear optical scheme to demonstrate genuine multipartite entanglement for single-particle W states
- Tripartite separability conditions exponentially violated by Gaussian states
- Entanglement, Squeezing and non-Locality in Filtered Two-Mode Squeezed Mixed States
- Thermalization Dynamics of Entanglement and non-Locality of Filtered Two-Mode Squeezed States
- Quantum Separability of the vacuum for Scalar Fields with a Boundary