期刊
OPTICS EXPRESS
卷 30, 期 9, 页码 14161-14171出版社
Optica Publishing Group
DOI: 10.1364/OE.454123
关键词
-
类别
资金
- Japan Science and Technology Agency [JPMJMS2064]
- Japan Society for the Promotion of Science [18H01149, 18H05207, 20J10844, 20K15187]
- Grants-in-Aid for Scientific Research [20J10844, 20K15187, 18H01149] Funding Source: KAKEN
This paper reports the generation of quantum states with Wigner negativity using a waveguide optical parametric amplifier, showcasing its potential applications in quantum computation.
Continuous-wave (CW) squeezed light is used in the generation of various optical quantum states, and thus is a fundamental resource of fault-tolerant universal quantum computation using optical continuous variables. To realize a practical quantum computer, a waveguide optical parametric amplifier (OPA) is an attractive CW squeezed light source in terms of its THz-order bandwidth and suitability for modularization. The usages of a waveguide OPA in quantum applications thus far, however, are limited due to the difficulty of the generation of the squeezed light with a high purity. In this paper, we report the first observation of Wigner negativity of the states generated by a heralding method using a waveguide OPA. We generate Schrodinger cat states at the wavelength of 1545 nm with Wigner negativity using a quasi-single-mode ZnO-doped periodically poled LiNbO3 waveguide module we developed. Wigner negativity is regarded as an important indicator of the usefulness of the quantum states as it is essential in the fault-tolerant universal quantum computation. Our result shows that our waveguide OPA can be used in wide range of quantum applications leading to a THz-clock optical quantum computer. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据