Narrow-line cooling and imaging of Ytterbium atoms in an optical tweezer array

Abstract

Engineering controllable, strongly interacting many-body quantum systems is at the frontier of quantum simulation and quantum information processing. Arrays of laser-cooled neutral atoms in optical tweezers have emerged as a promising platform, because of their flexibility and the potential for strong interactions via Rydberg states. Existing neutral atom array experiments utilize alkali atoms, but alkaline-earth atoms offer many advantages in terms of coherence and control, and also open the door to new applications in precision measurement and timekeeping. In this work, we present a technique to trap individual alkaline-earth-like Ytterbium (Yb) atoms in optical tweezer arrays. The narrow ${}^1{S}_0$-${}^3{P}_1$ intercombination line is used for both cooling and imaging in a magic-wavelength optical tweezer at 532 nm. The low Doppler temperature allows for imaging near the saturation intensity, resulting in a very high atom detection fidelity. We demonstrate the imaging fidelity concretely by observing rare ($<$ 1 in $10^4$ images) spontaneous quantum jumps into and out of a metastable state. We also demonstrate stochastic loading of atoms into a two-dimensional, 144-site tweezer array. This platform will enable advances in quantum information processing, quantum simulation and precision measurement. The demonstrated narrow-line Doppler imaging may also be applied in tweezer arrays or quantum gas microscopes using other atoms with similar transitions, such as Erbium and Dysprosium.

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• A Fermi-Hubbard Optical Tweezer Array
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• Dicke superradiance in ordered lattices: dimensionality matters
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• Time-Optimal Control of Collisional $\sqrt{\text{SWAP}}$ Gates in Ultracold Atomic Systems
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• Scalable quantum computing stabilised by optical tweezers on an ion crystal
• Bichromatic Imaging of Single Molecules in an Optical Tweezer Array
• A New Clock Transition with the Highest Sensitivity to $\alpha$ Variation and Simultaneous Magic Trapping Conditions with Other Clock Transitions in Yb
• A two-dimensional magneto-optical trap of dysprosium atoms as a compact source for efficient loading of a narrow-line three-dimensional magneto-optical trap
• Practical designs for permutation symmetric problem Hamiltonians on hypercubes
• Optical Tweezer Arrays of Erbium Atoms
• Rydberg quantum computation with nuclear spins in two-electron neutral atoms
• Resonant dynamics of strongly interacting SU($n$) fermionic atoms in a synthetic flux ladder
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• Hyperentanglement of divalent neutral atoms by Rydberg blockade
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• Number-resolved imaging of ${}^{88}$Sr atoms in a long working distance optical tweezer
• Unidirectional absorption, storage, and emission of single photons in a collectively responding bilayer atomic array
• State-dependent potentials for the ${}^1{\text{S}}_0$ and ${}^3{\text{P}}_0$ clock states of neutral ytterbium atoms
• Off-axis dipole forces in optical tweezers by an optical analog of the {Magnus} effect
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