Towards loophole-free Bell inequality test with preselected unsymmetrical singlet states of light
arXiv:1304.7460 · doi:10.1103/PhysRevA.89.022119
Abstract
Can a Bell test with no detection loophole be demonstrated for multi-photon entangled states of light within the current technology? We examine the possibility of a postselection-free CHSH-Bell inequality test wih an unsymmetrical polarization singlet. To that end we employ a preselection procedure which is performed prior to the test. It allows using imperfect (coarse-grained) binary photodetection in the test. We show an example of preselection scheme which improves violation of the CHSH inequality with the micro-macro polarization singlet produced by the optimal quantum cloning. The preselection is realized by a quantum filter which is believed to be not useful for this purpose.
12 pages, 8 figures, accepted to Phys. Rev. A
References in corpus (12)
- Device-independent security of quantum cryptography against collective attacks
- Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
- Bell violation with entangled photons, free of the fair-sampling assumption
- Detection-Loophole-Free Test of Quantum Nonlocality, and Applications
- Schroedinger Cat: Entanglement test in a Micro-Macroscopic system
- Displacing entanglement back and forth between the micro and macro domains
- Failure of Local Realism Revealed by Extremely Coarse-Grained Measurements
- Exploring Macroscopic Entanglement with a Single Photon and Coherent States
- Quantum to classical transition via fuzzy measurements on high gain spontaneous parametric down-conversion
- Entanglement Witnesses and Measures for Bright Squeezed Vacuum
- Interference of macroscopic beams on a beam splitter: phase uncertainty converted into photon-number uncertainty
- Multi-photon quantum interference with high visibility using multiport beam splitters
Cited by in corpus (8)
- Characterizations and Quantifications of Macroscopic Quantumness and Its Implementations using Optical Fields
- Generation of hybrid entanglement between a single-photon polarization qubit and a coherent state
- Quantum steering inequality with tolerance for measurement-setting-errors: experimentally feasible signature of unbounded violation
- Some Examples of Contextuality in Physics: Implications to Quantum Cognition
- Efficient Amplification of Photonic Qubits by Optimal Quantum Cloning
- Thermalization in the Quantum Ising Model - Approximations, Limits, and Beyond
- CHSH Bell Tests For Optical Hybrid Entanglement
- Feasible quantum engineering of quantum multiphoton superpositions