Work

Discrete and Parallel Frequency‐Bin Entanglement Generation from Quantum Frequency Comb

Year: 2024

Type: article

Abstract: Photons’ frequency degree of freedom is promising to realize large‐scale quantum information processing. Quantum frequency combs (QFCs) generated in integrated nonlinear microresonators can produce multiple frequency modes with narrow linewidth. Here, polarization‐entangled QFCs are utilized to generate discrete frequency‐bin entangled states. Fourteen pairs of polarization‐entangled photons with different frequencies are simultaneously transformed into frequency‐bin entangled states. The characteristic of frequency‐bin entanglement is demonstrated by Hong‐Ou‐Mandel interference, which can be performed with single or multiple frequency pairs in parallel. This work paves the way for harnessing large‐scale frequency‐bin entanglement and converting between different degrees of freedom in quantum information processing.

Source: Advanced Quantum Technologies

DOI: 10.1002/qute.202400229

Authors: Chi Lu, Xiaoyu Wu, Wenjun Wen, Xiao‐song Ma

Institutions: Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Nanjing University, University of Science and Technology of China

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: Government of Jiangsu Province, Natural Science Foundation of Jiangsu Province, National Key Research and Development Program of China, Fundamental Research Funds for the Central Universities