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Quantum Information Processing
Published in: Quantum Information Processing 8/2016

01-08-2016

Protecting coherence by reservoir engineering: intense bath disturbance

Authors: Zixian Zhou, Zhiguo Lü, Hang Zheng

Published in: Quantum Information Processing | Issue 8/2016

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Abstract

We put forward a scheme based on reservoir engineering to protect quantum coherence from leaking to bath, in which we intensely disturb the Lorentzian bath by N harmonic oscillators. We show that the intense disturbance changes the spectrum of the bath and reduces the qubit–bath interaction. Furthermore, we give the exact time evolution with the Lorentzian spectrum by a master equation and calculate the concurrence and survival probability of the qubits to demonstrate the effect of the intense bath disturbance on the protection of coherence. Meanwhile, we reveal the dynamic effects of counter-rotating interaction on the qubits as compared to the results of the rotating-wave approximation.
previous article Exploring the renormalization of quantum discord and Bell non-locality in the one-dimensional transverse Ising model
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Appendix
Available only for authorised users
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Metadata
Title
Protecting coherence by reservoir engineering: intense bath disturbance
Authors
Zixian Zhou
Zhiguo Lü
Hang Zheng
Publication date
01-08-2016
Publisher
Springer US
Published in
Quantum Information Processing / Issue 8/2016
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-016-1327-7

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