Adiabatic speedup in a non-Markovian quantum open system

Zhao Ming Wang, Da Wei Luo, Mark S. Byrd, Lian Ao Wu, Ting Yu, Bin Shao

Research output: Contribution to journalArticle

Abstract

Adiabatic quantum computation requires keeping a system in a particular eigenstate. However, unwanted transitions can occur due to the interaction of the system with a noisy environment. The adiabatic evolution of the system will then be ruined. To reduce the effect of the environment, quantum control methods can be used. This allows one to speed up the adiabatic process. Here we present an effective control scheme to allow for a speedup of the adiabatic process by using a sequence of pulses on the system. Using the hierarchical functional derivative (HFD) approach, we calculate the fidelity evolution, which is a measure of the adiabaticity in an open system. By carefully choosing the pulse intensity and duration, an accelerated adiabatic path can be obtained for both a weak-coupling and a strong non-Markovian environment.

Original languageEnglish (US)
Article number062118
JournalPhysical Review A
Volume98
Issue number6
DOIs
StatePublished - Dec 27 2018

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quantum computation
pulses
eigenvectors
interactions

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Wang, Z. M., Luo, D. W., Byrd, M. S., Wu, L. A., Yu, T., & Shao, B. (2018). Adiabatic speedup in a non-Markovian quantum open system. Physical Review A, 98(6), [062118]. https://doi.org/10.1103/PhysRevA.98.062118
Wang, Zhao Ming ; Luo, Da Wei ; Byrd, Mark S. ; Wu, Lian Ao ; Yu, Ting ; Shao, Bin. / Adiabatic speedup in a non-Markovian quantum open system. In: Physical Review A. 2018 ; Vol. 98, No. 6.
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Wang, ZM, Luo, DW, Byrd, MS, Wu, LA, Yu, T & Shao, B 2018, 'Adiabatic speedup in a non-Markovian quantum open system', Physical Review A, vol. 98, no. 6, 062118. https://doi.org/10.1103/PhysRevA.98.062118

Adiabatic speedup in a non-Markovian quantum open system. / Wang, Zhao Ming; Luo, Da Wei; Byrd, Mark S.; Wu, Lian Ao; Yu, Ting; Shao, Bin.

In: Physical Review A, Vol. 98, No. 6, 062118, 27.12.2018.

Research output: Contribution to journalArticle

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