Entanglement of Dirac fields in non-inertial frames

Abstract

We analyze the entanglement between two modes of a free Dirac field as seen by two relatively accelerated parties. The entanglement is degraded by the Unruh effect and asymptotically reaches a non-vanishing minimum value in the infinite acceleration limit. This means that the state always remains entangled to a degree and can be used in quantum information tasks, such as teleportation, between parties in relative uniform acceleration. We analyze our results from the point of view afforded by the phenomenon of entanglement sharing and in terms of recent results in the area of multi-qubit complementarity.

15 pages, with 8 figures (Mar 2006); accepted to Physical Review A, July 2006 - slightly revised

References in corpus (4)

• Quantum Entanglement of Moving Bodies
• Entangled Light in Moving Frames
• Comment on "Quantum entropy and special relativity" [by A. Peres, P. F. Scudo, and D. R. Terno, Phys. Rev. Lett. 88, 230402 (2002)]
• Characterizing entanglement with global and marginal entropic measures

Cited by in corpus (13)

• The Unruh effect and its applications
• Fermions Tunnelling from Black Holes
• Charged Fermions Tunnelling from Kerr-Newman Black Holes
• Continuous variable entanglement sharing in non-inertial frames
• Hawking radiation, Entanglement and Teleportation in background of an asymptotically flat static black hole
• Degradation of non-maximal entanglement of scalar and Dirac fields in non-inertial frames
• Fermionic entanglement that survives a black hole
• Loss of Spin Entanglement For Accelerated Electrons in Electric and Magnetic Fields
• Quantum Entanglement of Electromagnetic Fields in Non-inertial Reference Frames
• Quantum Entanglement and Teleportation in Higher Dimensional Black Hole Spacetimes
• Quantum Helicity Entropy of Moving Bodies
• Entanglement Entropy: Helicity versus Spin
• Physical qubits from charged particles: IR divergences in quantum information