Poster Session

Poster Session I (4pm-6pm CDT)

4:00 pm – 6:00 pm, Tuesday June 4 // Session D00

Topics:

Collective interactions in dense atomic clouds near a micro-ring resonator

Poster 58

Presenter: Deepak Aditya Suresh (Purdue University)

Authors: Xinchao Zhou (Purdue University), Chen-Lung Hung (Purdue University), Francis Robicheaux (Purdue University)

Dense atomic clouds have been trapped and cooled over a micro-ring resonator recently by the Purdue group [1]. The ring resonator acts as a whispering gallery mode cavity that can evanescently couple with the atoms, facilitating chiral collective interactions. We study the interplay between this chiral interaction through the micro-ring and the dipole-dipole interaction through free space, which gives rise to interesting subradiant and superradiant states. We also calculate the changes in experimental markers, such as linewidth and shift in resonance as we increase the atom number and the density of the ensemble. We computationally simulate the system in the low-intensity limit, using both density matrix and mean field methods.

[1] Trapped atoms and superradiance on an integrated nanophotonic microring circuit, X. Zhou, H. Tamura, T.H. Chang, C.L. Hung, arXiv:2312.14318

Funding acknowledgement

DS and FR were supported by the National Science Foundation under Award No. 2109987-PHY.XZ and CLH were supported by the AFOSR (Grant NO. FA9550-22-1-0031) and the NSF (Grant NO. PHY-1848316 and ECCS-2134931).

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