Quantum entanglement in three accelerating qubits coupled to scalar field

Abstract

We consider quantum entanglement of three accelerating qubits, each of which is locally coupled with a real scalar field, without causal influence among the qubits or among the fields. The initial states are assumed to be the GHZ and W states, which are the two representative three-partite entangled states. For each initial state, we study how various kinds of entanglement depend on the accelerations of the three qubits. All kinds of entanglement eventually suddenly die if at least two of three qubits have large enough accelerations. This result implies the eventual sudden death of all kinds of entanglement among three particles coupled with scalar fields when they are sufficiently close to the horizon of a black hole.

24 pages

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• Genuine multipartite entanglement subject to the Unruh and anti-Unruh effects
• Pairwise mode entanglement in Schwinger production of particle-antiparticle pairs in an electric field
• Effect of spacetime dimensions on quantum entanglement between two uniformly accelerated atoms
• Monogamy of Einstein-Podolsky-Rosen steering in the background of an asymptotically flat black hole
• Quantum correlation between a qubit and a relativistic boson in an expanding spacetime
• Brachistochrone of Entanglement for Spin Chains
• Accelerating Unruh-DeWitt detectors coupled with a spinor field
• System-environment dynamics of GHZ-like states in noninertial frames
• Kinetic Spin Decoherence in a Gravitational Field
• Quantum circuit simulation of black hole evaporation and Maxwell demon interpretation
• Quantum teleportation in terms of Dirac modes between accelerated observers