基于连续时间模式匹配的单光子波包实时正交测量

Real-Time Quadrature Measurement of a Single-Photon Wave Packet with Continuous Temporal-Mode Matching.

作者信息

Ogawa Hisashi, Ohdan Hideaki, Miyata Kazunori, Taguchi Masahiro, Makino Kenzo, Yonezawa Hidehiro, Yoshikawa Jun-Ichi, Furusawa Akira

机构信息

Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

Centre for Quantum Computation and Communication Technology, School of Engineering and Information Technology, University of New South Wales, Canberra, Australian Capital Territory 2600, Australia.

出版信息

Phys Rev Lett. 2016 Jun 10;116(23):233602. doi: 10.1103/PhysRevLett.116.233602. Epub 2016 Jun 8.

DOI:10.1103/PhysRevLett.116.233602

PMID:27341231

Abstract

Real-time controls based on quantum measurements are powerful tools for various quantum protocols. However, their experimental realization has been limited by mode mismatch between the temporal mode of quadrature measurement and that heralded by photon detection. Here, we demonstrate real-time quadrature measurement of a single-photon wave packet induced by photon detection by utilizing continuous temporal-mode matching between homodyne detection and an exponentially rising temporal mode. Single photons in exponentially rising modes are also expected to be useful resources for interactions with other quantum systems.

摘要

基于量子测量的实时控制是各种量子协议的强大工具。然而，它们的实验实现受到正交测量的时间模式与光子探测所预示的时间模式之间的模式失配的限制。在这里，我们通过利用零差探测与指数上升时间模式之间的连续时间模式匹配，演示了由光子探测诱导的单光子波包的实时正交测量。指数上升模式中的单光子也有望成为与其他量子系统相互作用的有用资源。