A strontium quantum-gas microscope

Abstract

The development of quantum-gas microscopes has brought novel ways of probing quantum degenerate many-body systems at the single-atom level. Until now, most of these setups have focused on alkali atoms. Expanding quantum-gas microscopy to alkaline-earth elements will provide new tools, such as SU(N)-symmetric fermionic isotopes or ultranarrow optical transitions, to the field of quantum simulation. Here, we demonstrate the site-resolved imaging of a ${}^{84}$Sr bosonic quantum gas in a Hubbard-regime optical lattice. The quantum gas is confined by a two-dimensional in-plane lattice and a light-sheet potential, which operate at the strontium clock-magic wavelength of 813.4 nm. We realize fluorescence imaging using the broad 461 nm transition, which provides high spatial resolution. Simultaneously, we perform attractive Sisyphus cooling with the narrow 689 nm intercombination line. We reconstruct the atomic occupation from the fluorescence images, obtaining imaging fidelities above 94%. Finally, we realize a ${}^{84}$Sr superfluid in the Bose-Hubbard regime. We observe its interference pattern upon expansion, a probe of phase coherence, with single-atom resolution. Our strontium quantum-gas microscope provides a new platform to study dissipative Hubbard models, quantum optics in atomic arrays, and SU(N) fermions at the microscopic level.

arXiv comment11 pages, 6 figures

References in corpus (66)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
• Quantum thermalization through entanglement in an isolated many-body system
• Exploring the many-body localization transition in two dimensions
• Creating, moving and merging Dirac points with a Fermi gas in a tunable honeycomb lattice
• Quantum Simulation of Antiferromagnetic Spin Chains in an Optical Lattice
• Probing the Superfluid to Mott Insulator Transition at the Single Atom Level
• Experimental realization of a long-range antiferromagnet in the Hubbard model with ultracold atoms
• Quantum dynamics of a single, mobile spin impurity
• Tools for quantum simulation with ultracold atoms in optical lattices
• Quantum State Engineering and Precision Metrology using State-Insensitive Light Traps
• Single-atom imaging of fermions in a quantum-gas microscope
• A Quantum Gas Microscope for Fermionic Atoms
• A Fermi-degenerate three-dimensional optical lattice clock
• A lattice of double wells for manipulating pairs of cold atoms
• An SU(N) Mott insulator of an atomic Fermi gas realized by large-spin Pomeranchuk cooling
• Site-resolved Imaging of Fermionic Lithium-6 in an Optical Lattice
• Ultracold Fermi Gases with Emergent SU(N) Symmetry
• Synthetic dimensions and spin-orbit coupling with an optical clock transition
• A subradiant optical mirror formed by a single structured atomic layer
• Spin-orbit coupled fermions in an optical lattice clock
• Monte Carlo study of two-dimensional Bose-Hubbard model
• Quantum computing with alkaline earth atoms
• Bad metallic transport in a cold atom Fermi-Hubbard system
• Observation of the Mott Insulator to Superfluid Crossover of a Driven-Dissipative Bose-Hubbard System
• Mott Insulators of Ultracold Fermionic Alkaline Earth Atoms: Underconstrained Magnetism and Chiral Spin Liquid
• Quantum gas microscopy of Kardar-Parisi-Zhang superdiffusion
• Alkaline earth atoms in optical tweezers
• Microscopic Observation of Pauli Blocking in Degenerate Fermionic Lattice Gases
• Bose-Einstein Condensation of Strontium
• Degenerate Fermi Gas of ${}^{87}$Sr
• Quantum critical behavior at the many-body-localization transition
• Microscopic control and detection of ultracold strontium in optical-tweezer arrays
• Imaging optical frequencies with 100 $\mu$Hz precision and 1.1 $\mu$m resolution
• Recoil-free spectroscopy of neutral Sr atoms in the Lamb-Dicke regime
• Direct probing of the Mott crossover in the SU($N$) Fermi-Hubbard model
• Observation of canted antiferromagnetism with ultracold fermions in an optical lattice
• Subdiffusion and heat transport in a tilted 2D Fermi-Hubbard system
• Spin Transport in a Mott Insulator of Ultracold Fermions
• 2000-times repeated imaging of strontium atoms in clock-magic tweezer arrays
• An ytterbium quantum gas microscope with narrow-line laser cooling
• Long-range interacting many-body systems with alkaline-earth-metal atoms
• Simultaneous dimerization and SU(4) symmetry breaking of 4-color fermions on the square lattice
• Long-lived Bell states in an array of optical clock qubits
• Anomalous momentum diffusion in a dissipative many-body system
• Production of quantum degenerate strontium gases: Larger, better, faster, colder
• Observation of antiferromagnetic correlations in an ultracold SU($N$) Hubbard model
• Dipolar quantum solids emerging in a Hubbard quantum simulator
• Tweezer-programmable 2D quantum walks in a Hubbard-regime lattice
• Site-resolved imaging of ytterbium atoms in a two-dimensional optical lattice
• Site-resolved imaging of ultracold fermions in a triangular-lattice quantum gas microscope
• Matter wave Fourier optics with a strongly interacting two-dimensional Fermi gas
• Narrow-line Laser Cooling by Adiabatic Transfer
• Observation of Universal Hall Response in Strongly Interacting Fermions
• Narrow-line imaging of single strontium atoms in shallow optical tweezers
• Clock spectroscopy of interacting bosons in deep optical lattices
• State-dependent interactions in ultracold ${}^{174}$Yb probed by optical clock spectroscopy
• Cavity-enhanced optical lattices for scaling neutral atom quantum technologies to higher qubit numbers
• Fast and dense magneto-optical traps for Strontium
• Site-resolved imaging of a bosonic Mott insulator using ytterbium atoms
• Observation of brane parity order in programmable optical lattices
• Laser-driven Sisyphus cooling in an optical dipole trap
• Site-Resolved Imaging of Bosonic Mott Insulator of ${}^7$Li atoms
• Analyzing a single-laser repumping scheme for efficient loading of a strontium magneto-optical trap
• Atom-Number Enhancement by Shielding Atoms from Losses in Strontium Magneto-Optical Traps
• Observation of Chiral-Mode Domains in a Frustrated XY Model on Optical Triangular Lattices

Cited by in corpus (15)

• In-situ Imaging of a Single-Atom Wave Packet in Continuous Space
• Persistent currents in ultracold gases
• Many-body Physics of Ultracold Alkaline-Earth atoms with SU($N$)-symmetric interactions
• Dynamically emergent correlations in bosons via quantum resetting
• Realization of a fast triple-magic all-optical qutrit in strontium-88
• Single-beam grating-chip 3D and 1D optical lattices
• Microsecond-scale high-survival and number-resolved detection of ytterbium atom arrays
• Dynamically generated correlations in a trapped bosonic gas via frequency quenches
• Fast, accurate, and predictive method for atom detection in site-resolved images of microtrap arrays
• Collectively enhanced ground-state cooling in subwavelength atomic arrays
• Unit-density SU(3) Fermi-Hubbard Model with Spin Flavor Imbalance
• Magic wavelength at 477 nm for the strontium clock transition
• Differential polarizability at 1064 nm of the strontium intercombination transition
• Magnetic correlations in the $SU(3)$ triangular-lattice $t$-$J$ model at finite doping
• Entanglement-enhanced correlation propagation in the one-dimensional SU($N$) Fermi-Hubbard model