Quantum Communications and Quantum Imaging
Optical quantum information processing and storage
Hisashi Ogawa, Takahiro Serikawa, Yu Shiozawa, Masanori Okada, Warit Asavanant, A. Sakaguchi, Naoto Takanashi, Fumiya Okamoto, Kan Takase, Masaya Kobayashi, Shuntaro Takeda, Akira Furusawa, Jun–ichi Yoshikawa, Yosuke Hashimoto, Shota Yokoyama, Peter van Loock
Abstract
Here we report our recent experimental progresses in optical quantum information processing. In particular, the following topics are included. First, we extend the heralding scheme to multi-mode states and demonstrate heralded creation of qutrit states. Next, we demonstrate storage of single-photon states and synchronized release of them. Then, we demonstrate real-time acquisition of quadrature values of heralded states by making use of an exponentially rising shape of wave-packets. Finally, we demonstrate cluster states in an arbitrarily long chain in the longitudinal direction.