首页|NOON-state interference in the frequency domain

NOON-state interference in the frequency domain

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The examination of entanglement across various degrees of freedom has been pivotal in augmenting our understanding of fundamental physics,extending to high dimensional quantum states,and promising the scalability of quantum technologies.In this paper,we demonstrate the photon number path entanglement in the frequency domain by implementing a frequency beam splitter that converts the single-photon frequency to another with 50％probability using Bragg scattering four-wave mixing.The two-photon NOON state in a single-mode fiber is generated in the frequency domain,manifesting the two-photon interference with two-fold enhanced resolution compared to that of single-photon interference,showing the outstanding stability of the interferometer.This successful translation of quantum states in the frequency domain will pave the way toward the discovery of fascinating quantum phenomena and scalable quantum information processing.

Dongjin Lee、Woncheol Shin、Sebae Park、Junyeop Kim、Heedeuk Shin

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Department of Physics,Pohang University of Science and Technology(POSTECH),Pohang 37673,South Korea

National Research Foundation of KoreaIITP(Institute for Information & Communications Technology Planning & Evaluation)grant funded by the Korean government(MSIT)IITP(Institute for Information & Communications Technology Planning & Evaluation)grant funded by the Korean government(MSIT)

NRF-2019M3E4A1079780IITP-2022-RS-2022-001647992020-0-00947

2024

10.1038/s41377-024-01439-9

光:科学与应用(英文版)
中国科学院长春光学精密机械与物理研究所

光:科学与应用(英文版)

CSTPCD
ISSN：2095-5545
年,卷(期)：2024.13(5)
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