Quantum entanglement in three accelerating qubits coupled to scalar fields - INSPIRE

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Quantum entanglement in three accelerating qubits coupled to scalar fields

Dec 15, 2015

17 pages

Published in:

Phys.Rev.D 94 (2016) 2, 025012

Published: Jul 7, 2016

e-Print:

1512.04886 [gr-qc]

DOI:

10.1103/PhysRevD.94.025012

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Abstract: (APS)

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.

Note:

24 pages

entanglement: quantum
black hole: horizon
qubit
initial state
acceleration
causality
coupling
field theory: scalar

References(19)

Figures(43)

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