Quantum counterfactuality with identical particles  

作　　者：Vinod N Rao Anindita Banerjee R Srikanth 

机构地区：[1]Theoretical Sciences Division,Poornaprajna Institute of Scientific Research,Bidalur,Bengaluru—562164,India [2]Graduate Studies,Manipal Academy of Higher Education,Manipal—576104,India [3]Centre of Development of Advanced Computing,Corporate Research and Development,Pune—411008,India

出　　处：《Communications in Theoretical Physics》2023年第6期59-65,共7页理论物理通讯（英文版）

基　　金：the support from the Interdisciplinary Cyber Physical Systems(ICPS)program of the Department of Science and Technology(DST),India,Grant No.DST/ICPS/Qu ST/Theme-1/2019/14;the support and encouragement from the Admar Mutt Education Foundation

摘　　要：Quantum self-interference enables the counterfactual transmission of information,whereby the transmitted bits involve no particles traveling through the channel.In this work,we show how counterfactuality can be realized even when the self-interference is replaced by interference between identical particles.Interestingly,the facet of indistinguishability called forth here is associated with first-order coherence,and is different from the usual notion of indistinguishability associated with the(anti-)commutation relations of mode operators.From an experimental perspective,the simplest implementation of the proposed idea can be realized by slight modifications to existing protocols for differential-phase-shift quantum key distribution or interaction-free measurement.

关 键 词：quantum cryptography counterfactuality INDISTINGUISHABILITY 

分 类 号：O413[理学—理论物理]