Programme

P.53 -- Posters, VCTP-50

Date: Tuesday, 5 August 2025

Time: 08:30 - 10:00

Studying nonclassical properties of the superposition of photon-added and photon-subtracted single-mode displaced Fock state

Ho Sy Chuong (1), Phan Ngoc Duy Tinh (2), Nguyen Minh Xuan (3), Truong Minh Duc (2)

(1) Dong Nai University, 09 Le Quy Don, Bien Hoa City, Dong Nai, Viet Nam; (2) Department of Physics, University of Education, Hue University, Hue City, Viet Nam; (3) School of Pedagogy, Dong Thap University

In this study, the superposition of photon-added and -subtracted single-mode displaced Fock state (S-PAS-SMDFS) is a class of nonclassical states that we construct by applying a superposition technique of photon addition and subtraction to the single-mode displaced Fock state (SMDFS). This technique significantly modifies the properties of the original SMDFS, resulting in a strongly non-Gaussian state characterised by the negativity of its Wigner function. Our study demonstrates that the S-PAS-SMDFS exhibits prominent nonclassical features such as higher-order squeezing properties in the type of Hillery and antibunching properties. Notably, these nonclassical characteristics are more pronounced than those observed in states generated by solely adding, subtracting, or simultaneously adding and subtracting photons without using the superposition technique. These findings highlight the effectiveness of the superposition technique in enhancing the nonclassical properties of quantum states.

Presenter: Ho Sy Chuong