Displaced photon-number entanglement tests
arXiv:1707.01707 · doi:10.1103/PhysRevA.96.032306
Abstract
Based on correlations of coherently displaced photon-numbers, we derive entanglement criteria for the purpose to verify non-Gaussian entanglement. Our construction method enables us to verify bipartite and multipartite entanglement of complex states of light. An important advantage of our technique is that the certified entanglement even persists in the presence of arbitrarily high, constant losses. We exploit experimental correlation schemes for the two-mode and multimode scenarios, which allow us to directly measure the desired observables. To detect entanglement of a given state, a genetic algorithm is applied to optimize over the infinite set of our constructed witnesses. In particular, we provide suitable witnesses for several distinct two-mode states. Moreover, a mixed non-Gaussian four-mode state is shown to be entangled in all possible non-trivial partitions.
14 pages, 7 figures
References in corpus (44)
- Quantum entanglement
- Separability Criterion for Density Matrices
- Separability of Mixed States: Necessary and Sufficient Conditions
- Entanglement detection
- Peres-Horodecki separability criterion for continuous variable systems
- Inseparability criterion for continuous variable systems
- Experimental One-Way Quantum Computing
- Optimization of entanglement witnesses
- On the impossibility of distilling Gaussian states with Gaussian operations
- Witnessing multipartite entanglement
- Wavelength-Multiplexed Quantum Networks with Ultrafast Frequency Combs
- Experimental realization of multipartite entanglement of 60 modes of a quantum optical frequency comb
- Hybrid quantum information processing
- Inseparability criteria for bipartite quantum states
- A No-Go Theorem for Gaussian Quantum Error Correction
- Conclusive quantum steering with superconducting transition edge sensors
- Entangling quantum and classical states of light
- Separability of n-particle mixed states: necessary and sufficient conditions in terms of linear maps
- Testing nonclassicality in multimode fields: a unified derivation of classical inequalities
- Entanglement Witnesses in Spin Models
- Single-Mode Parametric-Down-Conversion States with 50 Photons as a Source for Mesoscopic Quantum Optics
- Multipartite Entanglement Witnesses
- Demonstration of unconditional one-way quantum computations for continuous variables
- Full multipartite entanglement of frequency comb Gaussian states
- High quantum-efficiency photon-number-resolving detector for photonic on-chip information processing
- Necessary and sufficient conditions for bipartite entanglement
- Non-classicality criteria from phase-space representations and information-theoretical constraints are maximally inequivalent
- Nonclassical correlation properties of radiation fields
- Photon-number resolving detector based on a series array of superconducting nanowires
- Full characterization of a highly multimode entangled state embedded in an optical frequency comb using pulse shaping
- Quasiprobabilities for Multipartite Quantum Correlations of Light
- Is "genuine multipartite entanglement" really genuine?
- Observing optical coherence across Fock layers with weak-field homodyne detectors
- Representation of entanglement by negative quasi-probabilities
- Gaussian entanglement in the turbulent atmosphere
- Non-Gaussian entangled states and quantum teleportation of Schrödinger-cat states
- Characterizing maximally singular phase-space distributions
- Ultrafine Entanglement Witnessing
- Entanglement sensitivity to signal attenuation and amplification
- Detector-Independent Verification of Quantum Light
- Experimental creation and analysis of displaced number states
- Detection of non-Gaussian entangled states with an improved continuous-variable separability criterion
- Unbalanced Homodyne Correlation Measurements
- Entangled coherent states and squeezing in N trapped ions
Cited by in corpus (5)
- Non-classicality and entanglement criteria for bipartite optical fields characterized by quadratic detectors II: Criteria based on probabilities
- Geometrical picture of photocounting measurements
- Numerical construction of multipartite entanglement witnesses
- Non-classicality criteria for N-dimensional optical fields detected by quadratic detectors
- Quantification of Quantum Correlations in Two-Beam Gaussian States Using Photon-Number Measurements