Entanglement of two qubits in a relativistic orbit

Abstract

The creation and destruction of entanglement between a pair of interacting two-level detectors accelerating about diametrically opposite points of a circular path is investigated. It is found that any non-zero acceleration has the effect of suppressing the vacuum entanglement and enhancing the acceleration radiation thereby reducing the entangling capacity of the detectors. Given that for large accelerations the acceleration radiation is the dominant effect, we investigate the evolution of a two detector system initially prepared in a Bell state using a perturbative mater equation and treating the vacuum fluctuations as an unobserved environment. A general function for the concurrence is obtained for stationary and symmetric worldlines in flatspace. The entanglement sudden death time is computed.

v2: Some typo's fixed, figures compressed to smaller filesize and added some references.

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Cited by in corpus (28)

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• Unruh Effect under Non-equilibrium conditions: Oscillatory motion of an Unruh-DeWitt detector
• Entanglement harvesting for Unruh-DeWitt detectors in circular motion
• Unruh and analogue Unruh temperatures for circular motion in 3+1 and 2+1 dimensions
• Quantum Communication in Rindler Spacetime
• Does acceleration assist entanglement harvesting?
• Entanglement dynamics for uniformly accelerated two-level atoms coupled with electromagnetic vacuum fluctuations
• Quantum entanglement in three accelerating qubits coupled to scalar field
• Dynamics and quantum entanglement of two-level atoms in de Sitter spacetime
• Entropic uncertainty relation in de Sitter space
• Circular motion analogue Unruh effect in a $2+1$ thermal bath: Robbing from the rich and giving to the poor
• Entangled Detectors Nonperturbatively Harvest Mutual Information
• Spatially extended Unruh-DeWitt detectors for relativistic quantum information
• Superconducting circuit boundary conditions beyond the Dynamical Casimir Effect
• Asymptotic States of Accelerated Qubits with Nonzero Background Temperature
• Entanglement dynamics for circularly accelerated two-level atoms coupled with electromagnetic vacuum fluctuations
• Extraction of entanglement from quantum fields with entangled particle detectors
• Thermality from a Rindler quench
• Quantum discord and entropic measures of two relativistic fermions
• Probing Planckian physics in de Sitter space with quantum correlations
• Interacting fermions in an expanding spacetime
• Two-mode Gaussian quantum states measured by collinearly and noncollinearly accelerating observers
• Quenched entanglement harvesting
• Molecular entanglement as a signature of the Unruh effect
• Measuring the Casimir-Polder potential with Unruh-DeWitt detector excitations
• Detection of quantum entanglement across the event horizon