Enhanced Whispering Gallery Mode Phase Shift using Indistinguishable Photon Pairs
Quantum Physics
2024-04-29 v1 Optics
Abstract
We present a theoretical investigation of a whispering gallery mode (WGM) resonator coupled to a Mach-Zehnder interferometer (MZI) and show a bimodal coincidence transmission spectrum when the input state is an indistinguishable photon pair. This is due to the doubled WGM phase shift experienced by the path-entangled state in the interferometer. Further, we model the noise in a WGM resonance shift measurement comparing photon pairs with a coherent state. At least a four-fold improvement in the signal-to-noise ratio (SNR) is possible, with clear implications for quantum-enhanced WGM sensing.
Cite
@article{arxiv.2404.17409,
title = {Enhanced Whispering Gallery Mode Phase Shift using Indistinguishable Photon Pairs},
author = {Callum Jones and Antonio Vidiella-Barranco and Jolly Xavier and Frank Vollmer},
journal= {arXiv preprint arXiv:2404.17409},
year = {2024}
}
Comments
9 pages, 9 figures