Purity and coherence compensation by using interactions between particles in quantum system

Lou Yuesheng; Cong Shuang

doi:10.7523/j.issn.2095-6134.2008.5.018

Journal of University of Chinese Academy of Sciences >

2008 , Vol. 25 >Issue 5: 687 - 697

DOI: https://doi.org/10.7523/j.issn.2095-6134.2008.5.018

论文

Purity and coherence compensation by using interactions between particles in quantum system

Lou Yuesheng ,
Cong Shuang

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Department of Automation, University of Science and Technology of China, Hefei 230027, China

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2008-09-15

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Abstract

In this paper, problems of compensation for purity of particle in a mixed state and counteraction against decoherence process are investigated. A new method utilizing an assistant particle and its interactions with the target particle to compensate purity and coherence is proposed. Compensations for two different situations are considered: purity compensation for the target particle in a mixed state and counteraction against decoherence process. Conditions of the assistant particle for each situation are obtained. System numerical simulations are done to validate the validity of the method proposed.

Key words： quantum control; decoherence control; purity compensation; coherence compensation; particle interaction

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Lou Yuesheng , Cong Shuang . Purity and coherence compensation by using interactions between particles in quantum system[J]. Journal of University of Chinese Academy of Sciences, 2008 , 25(5) : 687 -697 . DOI: 10.7523/j.issn.2095-6134.2008.5.018

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