Violation of Bell's inequalities with pre-amplified homodyne detection
arXiv:1301.3183 · doi:10.1103/PhysRevA.87.052112
Abstract
We show that the use of probabilistic noiseless amplification in entangled coherent state-based schemes for the test of quantum non locality provides substantial advantages. The threshold amplitude to falsify a Bell-CHSH non locality test, in fact, is significantly reduced when amplification is embedded into the test itself. Such a beneficial effect holds also in the presence of detection-inefficiency. Our study helps in affirming noiseless amplification as a valuable tool for coherent information processing and the generation of strongly non classical states of bosonic systems.
7 pages, 5 figures. Published version
References in corpus (9)
- Proposal for Implementing Device-Independent Quantum Key Distribution based on a Heralded Qubit Amplification
- Single-photon excitation of a coherent state: catching the elementary step of stimulated light emission
- Measurement-Device-Independent Entanglement Witnesses for All Entangled Quantum States
- Violation of Bell's inequality using classical measurements and non-linear local operations
- Failure of Local Realism Revealed by Extremely Coarse-Grained Measurements
- Transfer of Nonclassical Properties from A Microscopic Superposition to Macroscopic Thermal States in The High Temperature Limit
- Large violation of Bell inequalities using both particle and wave measurements
- Testing Bell inequalities with photon-subtracted Gaussian states
- Bell tests for continuous variable systems using hybrid measurements and heralded amplifiers
Cited by in corpus (7)
- Tripartite entanglement dynamics and entropic squeezing of a three-level atom interacting with a bimodal cavity field
- Entanglement criteria of two two-level atoms interacting with two coupled modes
- Efficient noiseless linear amplification for light fields with larger amplitudes
- Noiseless Linear Amplification and Quantum Channels
- Comparing different approaches for generating random numbers device-independently using a photon pair source
- Generation of distributed entangled coherent states over a lossy environment with inefficient detectors
- Entangling two distinguishable quantum bright solitons via collisions