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Quantum Information Processing

Requirement of system–reservoir bound states for entanglement protection

  • 01-03-2018
Published in:
Authors
N. Behzadi
B. Ahansaz
E. Faizi
H. Kasani
Published in
Quantum Information Processing | Issue 3/2018

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Abstract

In this work, a genuine mechanism for entanglement protection of a two- qubit system interacting with a dissipative common reservoir is investigated. Based on generating a bound state for the system–reservoir, we show that stronger bound state in the energy spectrum can be created by adding another non-interacting qubits into the reservoir. It turns out that obtaining higher degrees of boundedness in the energy spectrum leads to a better protection of two-qubit entanglement against the dissipative noises. Also, it is figured out that the formation of bound state not only exclusively determines the long-time entanglement protection, irrespective to the Markovian and non-Markovian dynamics, but also performs the same task for reservoirs with different spectral densities.

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previous article Steady-state entanglement and thermalization of coupled qubits in two common heat baths
next article Local unitary representation of braids and N-qubit entanglements
Title
Requirement of system–reservoir bound states for entanglement protection
Authors
N. Behzadi
B. Ahansaz
E. Faizi
H. Kasani
Publication date
01-03-2018
Publisher
Springer US
Published in
Quantum Information Processing / Issue 3/2018
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-018-1833-x
This content is only visible if you are logged in and have the appropriate permissions.

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