Myilswamy Karthik V, Cohen Lucas M, Seshadri Suparna, Lu Hsuan-Hao, Lukens Joseph M
School of Electrical and Computer Engineering and Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, IN 47907, USA.
National Institute of Standards and Technology, Boulder, CO 80305, USA.
Nanophotonics. 2025 Jan 8;14(11):1879-1894. doi: 10.1515/nanoph-2024-0585. eCollection 2025 Jun.
Frequency-bin encoding furnishes a compelling pathway for quantum information processing systems compatible with established lightwave infrastructures based on fiber-optic transmission and wavelength-division multiplexing. Yet although significant progress has been realized in proof-of-principle tabletop demonstrations, ranging from arbitrary single-qubit gates to controllable multiphoton interference, challenges in scaling frequency-bin processors to larger systems remain. In this Perspective, we highlight recent advances at the intersection of frequency-bin encoding and integrated photonics that are fundamentally transforming the outlook for scalable frequency-based quantum information. Focusing specifically on results on sources, state manipulation, and hyperentanglement, we envision a possible future in which on-chip frequency-bin circuits fulfill critical roles in quantum information processing, particularly in communications and networking.
频分编码为与基于光纤传输和波分复用的现有光波基础设施兼容的量子信息处理系统提供了一条引人注目的途径。然而，尽管在原理验证桌面演示方面已经取得了重大进展，从任意单比特门到可控多光子干涉，但将频分处理器扩展到更大系统仍面临挑战。在这篇观点文章中，我们强调了频分编码与集成光子学交叉领域的最新进展，这些进展正在从根本上改变基于频率的可扩展量子信息的前景。具体关注光源、态操纵和超纠缠方面的成果，我们设想了一个可能的未来，其中片上频分电路在量子信息处理中发挥关键作用，特别是在通信和网络中。
