Quantum receivers aim to effectively navigate the vast quantum-state space to endow quantum information processing capabilities unmatched by classical receivers.To date,only a handful of quantum receivers have been co...Quantum receivers aim to effectively navigate the vast quantum-state space to endow quantum information processing capabilities unmatched by classical receivers.To date,only a handful of quantum receivers have been constructed to tackle the problem of discriminating coherent states.Quantum receivers designed by analytical approaches,however,are incapable of effectively adapting to diverse environmental conditions,resulting in their quickly diminishing performance as the operational complexities increase.Here,we present a general architecture,dubbed the quantum receiver enhanced by adaptive learning,to adapt quantum receiver structures to diverse operational conditions.The adaptively learned quantum receiver is experimentally implemented in a hardware platform with record-high efficiency.Combining the architecture and the experimental advances,the error rate is reduced up to 40%over the standard quantum limit in two coherent-state encoding schemes.展开更多
基金funding support by the National Science Foundation Grants No.CCF-1907918,No.ECCS-1828132,and No.EEC-1941583NSF CAREER Award No.ECCS-2144057support from Defense Advanced Research Projects Agency(DARPA)under Young Faculty Award(YFA)Grant No.N660012014029.
文摘Quantum receivers aim to effectively navigate the vast quantum-state space to endow quantum information processing capabilities unmatched by classical receivers.To date,only a handful of quantum receivers have been constructed to tackle the problem of discriminating coherent states.Quantum receivers designed by analytical approaches,however,are incapable of effectively adapting to diverse environmental conditions,resulting in their quickly diminishing performance as the operational complexities increase.Here,we present a general architecture,dubbed the quantum receiver enhanced by adaptive learning,to adapt quantum receiver structures to diverse operational conditions.The adaptively learned quantum receiver is experimentally implemented in a hardware platform with record-high efficiency.Combining the architecture and the experimental advances,the error rate is reduced up to 40%over the standard quantum limit in two coherent-state encoding schemes.
