Bell-inequality tests with entanglement between an atom and a coherent state in a cavity

2011/08/31 by Jinwoo Park, Mark Saunders, Yong-il Shin +2 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Atom (system on chip) #Atomic physics #Bell state #Bell test experiments #Bell's theorem #Coherent states #Cold Atom Physics and Bose-Einstein Condensates #Field (mathematics) #Local hidden variable theory #Mathematics #Parity (physics) #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum decoherence #Quantum entanglement #Quantum mechanics #quant-ph

paper · pdf · doi:10.1103/physreva.85.022120

published as Phys. Rev. A 85, 022120 (2012) · 13 pages, 9 figures

arxiv created 2012/01/30 · openalex publication_date 2012/02/21 · arxiv updated 2015/03/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We study Bell-inequality tests with entanglement between a coherent-state field in a cavity and a two-level atom. In order to detect the cavity field for such a test, photon on-off measurements and photon number parity measurements, respectively, are investigated. When photon on-off measurements are used, at least 50% of detection efficiency is required to demonstrate violation of the Bell inequality. Photon number parity measurements for the cavity field can be effectively performed using ancillary atoms and an atomic detector, which leads to large degrees of Bell violations up to Cirel'son's bound. We also analyze decoherence effects in both field and atomic modes and discuss conditions required to perform a Bell inequality test free from the locality loophole.

Citations

• Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?
• Experimental violation of a Bell's inequality with efficient detection
• Violation of Bell's inequality under strict Einstein locality conditions
• Bell Inequality Violation with Two Remote Atomic Qubits
• Transfer of Nonclassical Properties from A Microscopic Superposition to Macroscopic Thermal States in The High Temperature Limit
• Ultrahigh finesse Fabry-Pérot superconducting resonator
• Manipulating quantum entanglement with atoms and photons in a cavity
• Experimental Test of Local Hidden-Variable Theories
• Inhibited Spontaneous Emission by a Rydberg Atom
• Reconstruction of non-classical cavity field states with snapshots of their decoherence
• Hybrid methods for witnessing entanglement in a microscopic-macroscopic system
• Violation of Bell’s inequality using classical measurements and nonlinear local operations
• Progressive field-state collapse and quantum non-demolition photon counting
• On the Einstein Podolsky Rosen paradox
• Entanglement Test on a Microscopic-Macroscopic System
• Failure of Local Realism Revealed by Extremely-Coarse-Grained Measurements

Cited by

• Steady entanglement in bosonic dissipative networks