Nonlocality and Entanglement via the Unruh effect

Abstract

Modeling the qubit by a two-level semiclassical detector coupled to a massless scalar field, we investigate how the Unruh effect affects the nonlocality and entanglement of two-qubit and three-qubit states when one of the entangled qubits is accelerated. Two distinct differences with the results of free field model in non-inertial frames are (i) for the two-qubit state, the CHSH inequality can not be violated for sufficiently large but finite acceleration, furthermore, the concurrence will experience "sudden death"; and (ii) for the three-qubit state, not only the entanglement vanishes in the infinite acceleration limit, but also the Svetlichny inequality can not be violated in the case of large acceleration.

19 pages, 7 figures, accepted for publication in Annals of Physics. arXiv admin note: text overlap with arXiv:1003.4477 by other authors

References in corpus (8)

• Entanglement of Dirac fields in non-inertial frames
• Quantum Entanglement of Moving Bodies
• Monogamy Inequality in terms of Negativity for Three-Qubit States
• Hawking radiation, Entanglement and Teleportation in background of an asymptotically flat static black hole
• Tripartite entanglement versus tripartite nonlocality in 3-qubit GHZ-class states
• Degradation of non-maximal entanglement of scalar and Dirac fields in non-inertial frames
• Fermionic entanglement ambiguity in non-inertial frames
• Quantum Entanglement and Teleportation in Higher Dimensional Black Hole Spacetimes

Cited by in corpus (14)

• Irreversible degradation of quantum coherence under relativistic motion
• Quantum metrology and estimation of Unruh effect
• Hawking effect can generate physically inaccessible genuine tripartite nonlocality
• The influence of Unruh effect on quantum steering for accelerated two-level detectors with different measurements
• Radiative process of two entanglement atoms in de Sitter spacetime
• Characterization of Unruh Channel in the context of Open Quantum Systems
• Basis-independent quantum coherence and its distribution under relativistic motion
• Entanglement Enhanced Thermometry in the Detection of the Unruh Effect
• Entanglement dynamics in $\kappa$-deformed spacetime
• Genuine multipartite entanglement subject to the Unruh and anti-Unruh effects
• Does acceleration always degrade quantum entanglement for tetrapartite Unruh-DeWitt detectors?
• Dynamics and recovery of genuine multipartite Einstein-Podolsky-Rosen steering and genuine multipartite nonlocality for a dissipative Dirac system via Unruh effect
• Entropic uncertainty and quantum non-classicality of Unruh-Dewitt detectors in relativity
• Harvesting stabilizer entropy and non-locality from a quantum field