Photonic Quantum Receiver Attaining the Helstrom Bound

Autor:	Warke, Aakash, Nötzel, Janis, Takase, Kan, Asavanant, Warit, Nagayoshi, Hironari, Fukui, Kosuke, Takeda, Shuntaro, Furusawa, Akira, van Loock, Peter
Rok vydání:	2024
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	We propose an efficient decomposition scheme for a quantum receiver that attains the Helstrom bound in the low-photon regime for discriminating binary coherent states. Our method, which avoids feedback as used in Dolinar's case, breaks down nonlinear operations into basic gates used in continuous-variable quantum computation. We account for realistic conditions by examining the impact of photon loss and imperfect photon detection, including the presence of dark counts, while presenting squeezing as a technique to mitigate these noise sources and maintain the advantage over SQL. Our scheme motivates testing quantum advantages with cubic-phase gates and designing photonic quantum computers to optimize symbol-by-symbol measurements in optical communication. Comment: 8 pages, 7 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2410.21800 Zobrazit plný text záznamu View this record from Arxiv