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Title: Spin and occupation number entanglement of Dirac fields for noninertial observers

Abstract

We investigate the Unruh effect on entanglement taking into account the spin degree of freedom of the Dirac field. We analyze spin Bell states in this setting, obtaining their entanglement dependence on the acceleration of one of the partners. Then, we consider simple analogs to the occupation number entangled state |00>+|11> but with spin quantum numbers for |11>. We show that, despite their apparent similitude, while the spinless case is always qubitxqubit, for the spin case acceleration produces a qubitxfour-level quantum system state. We also introduce a procedure to consistently erase the spin information from our setting preserving occupation numbers. We show how the maximally entangled state for occupation number emerges from our setting. We as well analyze its entanglement dependence on acceleration, obtaining greater entanglement degradation than in the spinless case.

Authors:
;  [1]
  1. Instituto de Fisica Fundamental, CSIC, Serrano 113-B, 28006 Madrid (Spain)
Publication Date:
OSTI Identifier:
21313224
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 80; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevA.80.012314; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATION; BELL THEOREM; DEGREES OF FREEDOM; INFORMATION; OCCUPATION NUMBER; QUANTUM COMPUTERS; QUANTUM ENTANGLEMENT; QUANTUM NUMBERS; SPIN

Citation Formats

Leon, Juan, and Martin-Martinez, Eduardo. Spin and occupation number entanglement of Dirac fields for noninertial observers. United States: N. p., 2009. Web. doi:10.1103/PHYSREVA.80.012314.
Leon, Juan, & Martin-Martinez, Eduardo. Spin and occupation number entanglement of Dirac fields for noninertial observers. United States. doi:10.1103/PHYSREVA.80.012314.
Leon, Juan, and Martin-Martinez, Eduardo. Wed . "Spin and occupation number entanglement of Dirac fields for noninertial observers". United States. doi:10.1103/PHYSREVA.80.012314.
@article{osti_21313224,
title = {Spin and occupation number entanglement of Dirac fields for noninertial observers},
author = {Leon, Juan and Martin-Martinez, Eduardo},
abstractNote = {We investigate the Unruh effect on entanglement taking into account the spin degree of freedom of the Dirac field. We analyze spin Bell states in this setting, obtaining their entanglement dependence on the acceleration of one of the partners. Then, we consider simple analogs to the occupation number entangled state |00>+|11> but with spin quantum numbers for |11>. We show that, despite their apparent similitude, while the spinless case is always qubitxqubit, for the spin case acceleration produces a qubitxfour-level quantum system state. We also introduce a procedure to consistently erase the spin information from our setting preserving occupation numbers. We show how the maximally entangled state for occupation number emerges from our setting. We as well analyze its entanglement dependence on acceleration, obtaining greater entanglement degradation than in the spinless case.},
doi = {10.1103/PHYSREVA.80.012314},
journal = {Physical Review. A},
issn = {1050-2947},
number = 1,
volume = 80,
place = {United States},
year = {2009},
month = {7}
}