Spin entanglement loss by local correlation transfer to the momentum

Journal Article · Mon May 15 00:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.73.0· OSTI ID:20787242

Lamata, Lucas; Leon, Juan ^[1]; Salgado, David ^[2]

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1. Instituto de Matematicas y Fisica Fundamental, CSIC, Serrano 113-bis, 28006 Madrid (Spain)
2. Departamento Fisica Teorica, Universidad Autonoma de Madrid, 28049 Cantoblanco, Madrid (Spain)

We show the decrease of spin-spin entanglement between two s=(1/2) fermions or two photons due to local transfer of correlations from the spin to the momentum degree of freedom of one of the two particles. We explicitly show how this phenomenon operates in the case where one of the two fermions (photons) passes through a local homogeneous magnetic field (optically active medium), losing its spin correlations with the other particle.

• OSTI ID: 20787242
• Journal Information: Physical Review. A, Vol. 73, Issue 5; Other Information: DOI: 10.1103/PhysRevA.73.052325; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CORRELATIONS
DEGREES OF FREEDOM
FERMIONS
INFORMATION THEORY
MAGNETIC FIELDS
PHOTONS
QUANTUM ENTANGLEMENT
SPIN