Storing photons in a Quantum Gas Microscope
POSTER
Abstract
Quantum gas microscopes enable exploration of sub- and superradiance in ordered atomic arrays with single emitter resolution. Using erbium atoms in a subwavelength optical lattice, we realize a geometrically ordered, extended system where emission arises from a network of photon-mediated interactions rather than a single Dicke mode.
We observe strong sub- and superradiant behavior with site-resolved imaging, directly tracking the buildup of spatial correlations. Superradiance exhibits extensive scaling, revivals, and signatures of ferromagnetic (superradiant) and antiferromagnetic (subradiant) correlations, establishing a programmable platform for dissipative many-body dynamics.
Building on these advances, ongoing efforts focus on a super- and subradiant quantum repeater and memory. Directional superradiant modes enable efficient photon capture and retrieval: an incoming photon is injected into the array and stored by rapidly transferring it into a long-lived subradiant state. Retrieval is achieved by reversing this mapping, restoring a superradiant mode for directional emission and collecting the photon with an in-vacuum lens.
We observe strong sub- and superradiant behavior with site-resolved imaging, directly tracking the buildup of spatial correlations. Superradiance exhibits extensive scaling, revivals, and signatures of ferromagnetic (superradiant) and antiferromagnetic (subradiant) correlations, establishing a programmable platform for dissipative many-body dynamics.
Building on these advances, ongoing efforts focus on a super- and subradiant quantum repeater and memory. Directional superradiant modes enable efficient photon capture and retrieval: an incoming photon is injected into the array and stored by rapidly transferring it into a long-lived subradiant state. Retrieval is achieved by reversing this mapping, restoring a superradiant mode for directional emission and collecting the photon with an in-vacuum lens.
*We are supported by U.S. Department of Energy Quantum Systems Accelerator DE-AC02-05CH11231, National Science Foundation Center for Ultracold Atoms PHY-1734011, Army Research Office Defense University Research Instrumentation Program W911NF2010104, Office of Naval Research Vannevar Bush Faculty Fellowship N00014-18-1-2863, Defense Advanced Research Projects Agency Optimization with Noisy Intermediate-Scale Quantum devices W911NF-20-1-0021, and QuERA Computing Inc. A.D. acknowledges support from the NSF Graduate Research Fellowship Program (grant DGE2140743). S.B acknowledges support from the Harvard Quantum Initiative. M.G. is a cofounder, share-holder, and consultant of QuEra Computing.
Presenters
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Sandra Brandstetter
- Harvard Quantum Initiative
- Harvard University