期刊
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
卷 58, 期 1, 页码 1-9出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-018-3904-2
关键词
Quantum dense coding; Environment-assisted measurement; Quantum measurement reversal
资金
- National Natural Science Foundation of China [61765007]
- Program of Qingjiang Excellent Young Talents, Jiangxi University of Science and Technology
We propose a novel method to enhance the capacity of quantum dense coding under local amplitude damping noise. With the assistance of environment-assisted measurement and quantum measurement reversal, we show that the amplitude damping noise could be completely eliminated and the capacity is exactly recovered with a certain probability. Comparing with the results obtained by the method of weak measurement and quantum measurement reversal, our results show notable superiorities on improving the capacity and successful probability. The key advantage of our scheme originates from the fact that environment-assisted measurement can extract additional information from the environment.
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