Transformation of coherent state in Hadamard gate via multi-photon catalysis. (1st November 2022)

• Record Type: Journal Article
• Authors: Chen, Feng; Ren, Gang; Yu, Haijun
• Is Part Of: Laser physics letters. Volume 19:Number 11(2022)
• Publication Date: 2022-11-01
• Subjects: Hadamard gate -- multi-photon catalysis -- quantum detection -- Wigner function -- squeezed state; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/ac9402
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: Based on two-mode continuous Hadamard gate (TCHG) and multi-photon catalysis, this paper presents a scheme to generate non-classical quantum states via coherent state. When considering the m-photon input and m-photon detection in a -mode, the output state is obtained for the input coherent in b -mode. An interesting finding is that as the amplitude of the output coherent state increases, both the detection efficiency and the fidelity of the output quantum state gradually approach zero. Thus, only certain low-intensity quantum light field states can pass through Hadamard gate. In addition, the quantum statistical distribution and squeezing properties of the output quantum states are also analyzed in detail. Our results show that TCHG is a powerful tool for generating non-classical quantum states under multi-photon catalysis.