Single-photon quantum nonlocality: Violation of the Clauser-Horne-Shimony-Holt inequality using feasible measurement setups
arXiv:1612.02920 · doi:10.1103/PhysRevA.95.012134
Abstract
We investigate quantum nonlocality of a single-photon entangled state under feasible measurement techniques consisting of on-off and homodyne detections along with unitary operations of displacement and squeezing. We test for a potential violation of the Clauser-Horne-Shimony-Holt (CHSH) inequality, in which each of the bipartite party has a freedom to choose between 2 measurement settings, each measurement yielding a binary outcome. We find that single-photon quantum nonlocality can be detected when two or less of the 4 total measurements are carried out by homodyne detection. The largest violation of the CHSH inequality is obtained when all four measurements are squeezed-and-displaced on-off detections. We test robustness of violations against imperfections in on-off detectors and single-photon sources, finding that the squeezed-and-displaced measurement schemes perform better than the displacement-only measurement schemes.
7+ pages, 7 figures, 1 table, close to published version
References in corpus (12)
- Steering, Entanglement, Nonlocality, and the EPR Paradox
- Mapping photonic entanglement into and out of a quantum memory
- Experimental Proof of Nonlocal Wavefunction Collapse for a Single Particle Using Homodyne Measurement
- Nonlocality of a single particle
- Demonstration of deterministic and high fidelity squeezing of quantum information
- Witnessing trustworthy single-photon entanglement with local homodyne measurements
- Purification of Single-photon Entanglement
- Nonlocality of a single photon: paths to an EPR-steering experiment
- Large violation of Bell inequalities using both particle and wave measurements
- Testing quantum nonlocality by generalized quasiprobability functions
- Robust nonlocality tests with displacement-based measurements
- Single particle nonlocality with completely independent reference states