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Science Bulletin

, Volume 61, Issue 13, pp 1031–1036 | Cite as

Non-Markovian discrete qubit dynamics

  • Jun Sun
  • Yong-Nan Sun
  • Chuan-Feng Li
  • Guang-Can Guo
  • Kimmo Luoma
  • Jyrki Piilo
Article Physics & Astronomy

Abstract

The study of open quantum systems is important for fundamental issues of quantum physics as well as for technological applications such as quantum information processing. The interaction of a quantum system with its environment is usually detrimental for the quantum properties of the system and leads to decoherence. However, sometimes a quantum control can lead to a coherent partial exchange of information between the system and the dynamics of the open system might become non-Markovian. In this article, we study experimentally discrete non-Markovian open quantum system dynamics. We implement a local control protocol using linear optics for controlling the information flow between the open system and the environment. We show how the transition from Markovian to non-Markovian dynamics can be controlled using only local operations for the open system.

Keywords

Non-Markovian dynamics Open quantum system Quantum optics Coherent optical effects 

Notes

Acknowledgments

This work was supported by the Magnus Ehrnrooth Foundation and Academy of Finland (287750), National Natural Science Foundation of China (61327901, 11274289 and 11325419), the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (XDB01030300). C.F.L. and J.P. acknowledge financial support from the EU Collaborative project QuProCS (Grant Agreement 641277).

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Key Laboratory of Quantum InformationUniversity of Science and Technology of China, Chinese Academy of SciencesHefeiChina
  2. 2.Synergetic Innovation Center of Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaHefeiChina
  3. 3.Institut für Theoretische PhysikTechnische Universität DresdenDresdenGermany
  4. 4.Department of Physics and Astronomy, Turku Centre for Quantum PhysicsUniversity of TurkuTurun YliopistoFinland

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