Grey-molasses optical-tweezer loading: Controlling collisions for scaling atom-array assembly

Abstract

We show that with a purely blue-detuned cooling mechanism we can densely load single neutral atoms into large arrays of shallow optical tweezers. With this ability, more efficient assembly of larger ordered arrays will be possible - hence expanding the number of particles available for bottom-up quantum simulation and computation with atoms. Using Lambda-enhanced grey molasses on the D1 line of 87Rb, we achieve loading into a single 0.63 mK trap with 89% probability, and we further extend this loading to 100 atoms at 80% probability. The loading behavior agrees with a model of consecutive light-assisted collisions in repulsive molecular states. With simple rearrangement that only moves rows and columns of a 2D array, we demonstrate one example of the power of enhanced loading in large arrays.

6 pages, 3 figures

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Cited by in corpus (66)

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• Many-body Signatures of Collective Decay in Atomic Chains
• Neutral Atom Quantum Computing Hardware: Performance and End-User Perspective
• Complex density wave orders and quantum phase transitions in a model of square-lattice Rydberg atom arrays
• Enhanced atom-by-atom assembly of arbitrary tweezers arrays
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• Laser cooled molecules
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• Continuous operation of large-scale atom arrays in optical lattices
• Supercharged two-dimensional tweezer array with more than 1000 atomic qubits
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• Super-radiant and Sub-radiant Cavity Scattering by Atom Arrays
• In-situ equalization of single-atom loading in large-scale optical tweezers arrays
• Single Atoms with 6000-Second Trapping Lifetimes in Optical-Tweezer Arrays at Cryogenic Temperatures
• Scalable multilayer architecture of assembled single-atom qubit arrays in a three-dimensional Talbot tweezer lattice
• Photon recoil and laser focusing limits to Rydberg gate fidelity
• Parallel assembly of arbitrary defect-free atom arrays with a multi-tweezer algorithm
• Metasurface Holographic Optical Traps for Ultracold Atoms
• Direct Measurements of Collisional Dynamics in Cold Atom Triads
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• Nanophotonic quantum network node with neutral atoms and an integrated telecom interface
• D1 magic wavelength tweezers for scaling atom arrays
• Dark-state enhanced loading of an optical tweezer array
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• Assembled arrays of Rydberg-interacting atoms
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• Microsecond-scale high-survival and number-resolved detection of ytterbium atom arrays
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• Fano Resonance in Excitation Spectroscopy and Cooling of an Optically Trapped Single Atom
• Light-Assisted Collisions in Tweezer-Trapped Lanthanides
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• Dual-species Optical tweezer for Rb and K atoms
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