Unique Bell state
- 1 November 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 46 (9) , 5363-5366
- https://doi.org/10.1103/physreva.46.5363
Abstract
A pure quantum state which when split in any way cannot violate Bell’s inequality is termed a Bell state. Such a state may be considered as classical a state as possible. We show that for the radiation field the Bell state is unique, and is the Glauber coherent state. The formalism allows the interpretation of a local measurement in an entangled state as a measurement with an extended apparatus on a product state.Keywords
This publication has 7 references indexed in Scilit:
- Bell's inequality holds for all non-product statesPhysics Letters A, 1991
- Bifactorizable wavefunctionsJournal of Physics A: General Physics, 1991
- Classical pure states are coherent statesPhysics Letters A, 1985
- Unperformed experiments have no resultsAmerican Journal of Physics, 1978
- Proposed Experiment to Test Local Hidden-Variable TheoriesPhysical Review Letters, 1969
- A quantum characterization of classical radiationAnnals of Physics, 1966
- Coherent and Incoherent States of the Radiation FieldPhysical Review B, 1963