【摘 要】
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We reinvestigate the measures conceing the notion of duality of a quantum system (the "quanton") in an asymmetry two-way interferometer. A new measure of the wh
【机 构】
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College of Science,National University of Defense Technology,Changsha 410073
论文部分内容阅读
We reinvestigate the measures conceing the notion of duality of a quantum system (the "quanton") in an asymmetry two-way interferometer. A new measure of the which-way information is introduced, which is based on the fidelity F instead of the trace distance Q of the final states of the which-way detector. An improved inequality is derived to be V2 ≤ (R20-P2)(1-F)2, which is more stringent than the previous one of V2 ≤ (1-P2)(1-Q2).
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