Non-Markovian effect on remote state preparation

Journal Article · Fri May 15 00:00:00 EDT 2015 · Annals of Physics

DOI:https://doi.org/10.1016/J.AOP.2015.02.026· OSTI ID:22451161

Xu, Zhen-Yu ^[1]; Liu, Chen ^[1]; Luo, Shunlong ^[2]; Zhu, Shiqun ^[1]

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1. College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006 (China)
2. Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190 (China)

Memory effect of non-Markovian dynamics in open quantum systems is often believed to be beneficial for quantum information processing. In this work, we employ an experimentally controllable two-photon open system, with one photon experiencing a dephasing environment and the other being free from noise, to show that non-Markovian effect may also have a negative impact on quantum tasks such as remote state preparation: For a certain period of controlled time interval, stronger non-Markovian effect yields lower fidelity of remote state preparation, as opposed to the common wisdom that more information leads to better performance. As a comparison, a positive non-Markovian effect on the RSP fidelity with another typical non-Markovian noise is analyzed. Consequently, the observed dual character of non-Markovian effect will be of great importance in the field of open systems engineering.

• OSTI ID: 22451161
• Journal Information: Annals of Physics, Vol. 356; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MARKOV PROCESS
PHOTONS
QUANTUM INFORMATION
QUANTUM STATES
QUANTUM SYSTEMS