Work

Scalable quantum optical tap for the distribution of quantum information encoded in entangled fields

Year: 2024

Type: article

Abstract: We study two squeezed-state-dependent schemes of the quantum optical tap for information encoded in quantum-correlated fields from a two-mode entangled source. We find that, by using two independent squeezed beam splitters, the quantum information encoded in entangled dual beams can be divided into four parts without noise increase. We calculate the corresponding transfer coefficients to confirm that quantum optical tapping is achieved. As a variation to the original tapping schemes, we consider parametric amplifiers to replace beam splitters as tapping devices and find that they work equally well and have the advantage of tolerance to external losses. We also analyze the scalability of the schemes by cascading two outputs into the next stage and find that the output signals of the first stage can be further split noiselessly by the second stage. This shows that the scheme is cascadable and scalable for efficient quantum information distribution in an optical network.

Source: Physical Review A

DOI: 10.1103/physreva.110.053715

Authors: Nannan Liu, Tingting Liu, Qian Zhang, Z. Y. Ou, Xiaoying Li

Institutions: Zhengzhou University of Light Industry, City University of Hong Kong, Tianjin University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Zhengzhou University of Light Industry, Key Research and Development Project of Hainan Province

Awards: G5421086477, G7806245170