Affiliation:
1. The University of Tokyo
2. National Institute of Information and Communications Technology, 588-2 Iwaoka
3. Kobe University
4. RIKEN center for Quantum Computing
Abstract
Telecommunication wavelength with well-developed optical communication technologies and low losses in the waveguide are advantageous for quantum applications. However, an experimental generation of non-classical states called non-Gaussian states at the telecommunication wavelength is still underdeveloped. Here, we generate highly-pure-single-photon states, one of the most primitive non-Gaussian states, by using a heralding scheme with an optical parametric oscillator and a superconducting nano-strip photon detector. The Wigner negativity, the indicator of non-classicality, of the generated single photon state is -0.228 ± 0.004, corresponded to 85.1 ± 0.7% of single photon and the best record of the minimum value at all wavelengths. The quantum-optics-technology we establish can be easily applied to the generation of various types of quantum states, opening up the possibility of continuous-variable-quantum-information processing at the telecommunication wavelength.
Funder
Japan Science and Technology Agency
Japan Society for the Promotion of Science
Subject
Atomic and Molecular Physics, and Optics
Cited by
7 articles.
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