Jul 17 – 22, 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Atomic arrays driven by broadband squeezed light

Jul 19, 2022, 5:00 PM
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Quantum optics and hybrid quantum systems Poster session


In this theoretical work we describe the evolution of an atomic array driven by broadband squeezed light. Photons in a squeezed field are created as correlated pairs, thus leading to a phase-sensitive amplification and deamplification of fluctuations. These fluctuations depend on the squeezing mechanism and the spatial structure of the modes carrying the correlated pairs [1-3]. By spreading several atoms within this environment, we are able to probe the local structure of the field at different points and study its underlying temporal and spatial correlations. We show that, like the squeezed source illuminating them, atoms correlate in pairs to form a collective state that disentangles from its environment. Being detached from the environment, atoms become trapped in this state, thus increasing the purity of the system as time advances. For this to happen, however, atoms have to be placed at points where the correlations of the field are maximized. We explore these points and discuss the steady states formed outside of them.

This work builds upon a recent trend where the collective radiation of atomic ensembles is used as a tool to extend the standard theory of quantum optics to account for both spatial and temporal correlations of light.

[1] C. W. Gardiner, Phys. Rev. Lett. 56, 1917 (1986).
[2] H. J. Carmichael, A. S. Lane, and D. F. Walls, Phys. Rev. Lett. 58, 2539 (1987).
[3] K. W. Murch, S. J. Weber, K. M. Beck, E. Ginossar, and I. Siddiqi, Nature 499, 62 (2013).

Presenter name Gutierrez-Jauregui, Ricardo
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Primary authors

Ricardo Gutierrez-Jauregui (Columbia University) Ana Asenjo-Garcia (Columbia University)

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