Quantum Information Processing

, Volume 15, Issue 8, pp 3223–3241 | Cite as

Protecting coherence by reservoir engineering: intense bath disturbance

  • Zixian Zhou
  • Zhiguo Lü
  • Hang Zheng


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.


Reservoir engineering Quantum dynamics Lorentzian spectrum Spin–boson model 



This work was supported by the National Natural Science Foundation of China (Grants No. 11174198, 11374208, 91221201, and 11474200) and the National Basic Research Program of China (Grant No. 2011CB922202). The work was partially supported by the Shanghai Jiao Tong University SMC-Youth Foundation.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China

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