A cavity array microscope for parallel single-atom interfacing
arXiv:2506.10919 · doi:10.1038/s41586-025-10035-9
Abstract
Neutral atom arrays and optical cavity QED systems have developed in parallel as central pillars of modern experimental quantum science. While each platform has demonstrated exceptional capabilities-such as high-fidelity quantum logic in atom arrays, and strong light-matter coupling in cavities-their combination holds promise for realizing fast and non-destructive atom measurement, building large-scale quantum networks, and engineering hybrid atom-photon Hamiltonians. However, to date, experiments integrating the two platforms have been limited to spatially interfacing the entire atom array with one global cavity mode, a configuration that constrains addressability, parallelism, and scalability. Here we introduce the cavity array microscope, an experimental platform where each individual atom is strongly coupled to its own individual cavity across a two-dimensional array of over 40 modes. Our approach requires no nanophotonic elements, and instead uses a new free-space cavity geometry with intra-cavity lenses to realize above-unity peak cooperativity with micron-scale mode waists and spacings, compatible with typical atom array length scales while keeping atoms far from dielectric surfaces. We achieve homogeneous atom-cavity coupling, and show fast, non-destructive, parallel readout on millisecond timescales, including through a fiber array as a proof-of-principle for networking applications. As an outlook, we realize a next-generation iteration of the platform with over 500 cavities and a nearly 10 times improvement in finesse. Our work unlocks the regime of many-cavity QED, and opens an unexplored frontier of large-scale quantum networking with atom arrays.
A.L.S., A.S., and D.S. contributed equally
References in corpus (38)
- The Quantum Internet
- Theory of Photon Blockade by an Optical Cavity with One Trapped Atom
- Logical quantum processor based on reconfigurable atom arrays
- Cavity-based quantum networks with single atoms and optical photons
- An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
- Quantum phase transitions of light
- Implementation of Cavity Squeezing of a Collective Atomic Spin
- Supersolid formation in a quantum gas breaking continuous translational symmetry
- High-fidelity parallel entangling gates on a neutral atom quantum computer
- Quantum Many-Body Phenomena in Coupled Cavity Arrays
- High-rate, high-fidelity entanglement of qubits across an elementary quantum network
- High-fidelity gates with mid-circuit erasure conversion in a metastable neutral atom qubit
- Observation of Laughlin states made of light
- Erasure conversion in a high-fidelity Rydberg quantum simulator
- Spin-resolved single-atom imaging of Li in free space
- Deterministic generation of multiparticle entanglement by quantum Zeno dynamics
- Entanglement transport and a nanophotonic interface for atoms in optical tweezers
- Quantum networks with neutral atom processing nodes
- Mid-circuit cavity measurement in a neutral atom array
- A tweezer array with 6100 highly coherent atomic qubits
- Realization of strong coupling between deterministic single-atom arrays and a high-finesse miniature optical cavity
- Quantum phase transitions in photonic cavities with two-level systems
- Benchmarking and fidelity response theory of high-fidelity Rydberg entangling gates
- A quantum-network register assembled with optical tweezers in an optical cavity
- Multi-ensemble metrology by programming local rotations with atom movements
- A universal neutral-atom quantum computer with individual optical addressing and non-destructive readout
- Multiplexed telecom-band quantum networking with atom arrays in optical cavities
- Engineering random spin models with atoms in a high-finesse cavity
- Superresolution microscopy of optical fields using tweezer-trapped single atoms
- Observing dynamical phases of BCS superconductors in a cavity QED simulator
- An integrated atom array -- nanophotonic chip platform with background-free imaging
- Fast single atom imaging for optical lattice arrays
- Engineering Photonic Floquet Hamiltonians through Fabry Pérot Resonators
- Ultra-precise holographic optical tweezers array
- Parallelized telecom quantum networking with a ytterbium-171 atom array
- Ultrafast high-fidelity state readout of single neutral atom
- Aberrated optical cavities
- Cavity-enabled real-time observation of individual atomic collisions