activity
20042026
most citedBeating the Standard Quantum Limit with Four Entangled Photons

821 citations · 2.1k across the 24 of their papers we have counts for

collaborators

24 papers

quant-ph2026

Electron-Photon Spatial Entanglement in Coherent Cathodoluminescence

Tatsuro Yuge, Ryo Okamoto, Takumi Sannomiya +1

Electron--photon quantum entanglement in an electron microscope paves the way for a new quantum platform, enabling the integration of quantum functionalities into electron microsco…

physics.optics2021★ 69 cited

Quantum Fourier-transform infrared spectroscopy in the fingerprint region

Yu Mukai, Ryo Okamoto, Shigeki Takeuchi

Harnessing the quantum interference of photon-pair generation processes, infrared quantum absorption spectroscopy (IRQAS) can extract the infrared optical properties of a sample th…

quant-ph2021★ 25 cited

Frequency correlated photon generation at telecom band using silicon nitride ring cavities

Zhenghao Yin, Kenta Sugiura, Hideaki Takashima +4

Frequency entangled photon sources are in high demand in a variety of optical quantum technologies, including quantum key distribution, cluster state quantum computation and quantu…

quant-ph2017★ 2 cited

Serial-parallel conversion for single photons with heralding signals

Takayuki Kiyohara, Ryo Okamoto, Shigeki Takeuchi

We present serial-parallel conversion for a heralded single photon source (heralded SPS). We theoretically show that with the heralding signal, the serial-parallel converter can ro…

stat.ML2017

Consistent Nonparametric Different-Feature Selection via the Sparsest -Subgraph Problem

Satoshi Hara, Takayuki Katsuki, Hiroki Yanagisawa +4

Two-sample feature selection is the problem of finding features that describe a difference between two probability distributions, which is a ubiquitous problem in both scientific a…

quant-ph2017★ 14 cited

Nonlocal Position Changes of a Photon Revealed by Quantum Routers

Avshalom C. Elitzur, Eliahu Cohen, Ryo Okamoto +1

Since its publication, Aharonov and Vaidman's three-box paradox has undergone three major advances: i). A non-counterfactual scheme by the same authors in 2003 with strong rather t…