Collective state measurement of mesoscopic ensembles with single-atom resolution

Abstract

For mesoscopic ensembles containing 100 or more atoms we measure the total atom number and the number of atoms in a specific hyperfine state with single-atom resolution. The measurement detects the atom-induced shift of the resonance frequency of an optical cavity containing the ensemble. This work extends the range of cavity-based detection with single-atom resolution by more than an order of magnitude in atom number, and provides the readout capability necessary for Heisenberg-limited interferometry with atomic ensembles.

5 pages, 4 pdf figures

References in corpus (20)

• A quantum gas microscope - detecting single atoms in a Hubbard regime optical lattice
• Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
• 14-qubit entanglement: creation and coherence
• Nonlinear atom interferometer surpasses classical precision limit
• Atom chip based generation of entanglement for quantum metrology
• Implementation of Cavity Squeezing of a Collective Atomic Spin
• Onset of a Quantum Phase Transition with a Trapped Ion Quantum Simulator
• Spin-Nematic Squeezed Vacuum in a Quantum Gas
• Orientation-Dependent Entanglement Lifetime in a Squeezed Atomic Clock
• Entanglement-assisted atomic clock beyond the projection noise limit
• Conditional Spin-Squeezing of a Large Ensemble via the Vacuum Rabi Splitting
• Spin squeezing of atomic ensembles via nuclear-electronic spin entanglement
• Cooling to the Ground State of Axial Motion for One Atom Strongly Coupled to an Optical Cavity
• Cavity-based single atom preparation and high-fidelity hyperfine state readout
• Deterministic loading of individual atoms to a high-finesse optical cavity
• Optomechanical Cavity Cooling of an Atomic Ensemble
• Lossless State Detection of Single Neutral Atoms
• Resonator-Aided Single-Atom Detection on a Microfabricated Chip
• Unitary Cavity Spin Squeezing by Quantum Erasure
• Cavity-aided magnetic-resonance microscopy of atoms in optical lattices

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