NOON-state interference in the frequency domain

Bibliographic Details
Title: NOON-state interference in the frequency domain
Authors: Lee, Dongjin, Shin, Woncheol, Park, Sebae, Kim, Junyeop, Shin, Heedeuk
Source: Light: Science & Applications, 13, 90 (2024)
Publication Year: 2023
Collection: Quantum Physics
Subject Terms: Quantum Physics
More Details: 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.
Comment: Main text (9 pages and 6 figures), Supplementary information (14 pages and 7 figures)
Document Type: Working Paper
DOI: 10.1038/s41377-024-01439-9
Access URL: http://arxiv.org/abs/2311.00338
Accession Number: edsarx.2311.00338
Database: arXiv
More Details
DOI:10.1038/s41377-024-01439-9