Programme

P.46 -- Poster, VCTP-49

Date: Friday, 2 August 2024

Time: 08:30 - 10:00

Influence of cut-off frequency effect on resonance energy transfer and Casimir-Polder interaction

Nguyen Dung Chinh (1,2), Vinh Nguyen Thanh Pham (3,4), and Nguyen Duy Vy (5,6)

(1) Institute of Fundamental and Applied Sciences, Duy Tan University, 6 Tran Nhat Duat St., District 1, Ho Chi Minh City; (2) Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung St., Hai Chau District, Danang, Vietnam; (3) Postgraduate Studies Office, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam; (4) Department of Physics, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam; (5) Laboratory of Applied Physics, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Vietnam; (6) Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam

Using the Green's function approach, we study the resonance energy transfer (RET) rate between two parallel identical two-level atoms in the presence of three types of cylindrical system: a distributed Bragg reflector (DBR), a perfectly reflecting wall (PRW), and a two-layer silicon fiber. Upon applying the cut-off frequency condition, our analysis reveals a profound suppression in the RET rate for atoms positioned along the axis of the cylinder with the PRW. Conversely, for atoms situated within the DBR, the results demonstrate enhancement in the far zone. Furthermore, it is shown that when two atoms oriented radially are placed inside and near the surface of the silicon fiber, the RET rate is completely inhibited. We also investigate the Casimir-Polder (CP) interaction between a cut-off-frequency DBR and an excited atom. A fully attractive potential towards the surface of the DBR is found for the atom inside the waveguide.

Presenter: Nguyen Dung Chinh