SciPost Submission Page

Spin-Orbit Photonics in a Fixed Cavity: Harnessing Bogoliubov Modes of a Bose–Einstein Condensate

by Muqaddar Abbas, Ghaisud Din, and Pei Zhang

Submission summary

Abstract

We present a theoretical investigation of spin-orbit photonics within a fixed mirror cavity system containing a Bose-Einstein condensate (BEC), in which the Bogoliubov excitation modes of the condensate are treated as effective mechanical oscillators. By embedding the condensate in a single-mode optical cavity, we explore the emergence and modulation of the photonic spin Hall effect through the spin-dependent transverse shifts of a weak probe field. The optical response—encoded in the real and imaginary components of the output field susceptibility—is systematically analyzed as a function of the condensate–cavity coupling strength, revealing a controllable enhancement or suppression of the spin-orbit interaction. Our model captures how the interplay between collective BEC excitations and cavity photon dynamics induces nontrivial modifications in spin-dependent light propagation. Notably, we uncover that the Bogoliubov mode coupling acts as a tunable channel for mediating spin angular momentum transfer within the cavity, offering a novel route for engineering compact, quantum-coherent spin-orbit photonic devices.

Author comments upon resubmission

List of changes