Theory of a Quantum Scanning Microscope for Cold Atoms
arXiv:1709.01530 · doi:10.1103/PhysRevLett.120.133601
Abstract
We propose and analyze a scanning microscope to monitor `live' the quantum dynamics of cold atoms in a Cavity QED setup. The microscope measures the atomic density with subwavelength resolution via dispersive couplings to a cavity and homodyne detection within the framework of continuous measurement theory. We analyze two modes of operation. First, for a fixed focal point the microscope records the wave packet dynamics of atoms with time resolution set by the cavity lifetime. Second, a spatial scan of the microscope acts to map out the spatial density of stationary quantum states. Remarkably, in the latter case, for a good cavity limit, the microscope becomes an effective quantum non-demolition (QND) device, such that the spatial distribution of motional eigenstates can be measured back-action free in single scans, as an emergent QND measurement.
4+5 pages, 4+1 figures; published version
References in corpus (15)
- Probing many-body dynamics on a 51-atom quantum simulator
- Cold atoms in cavity-generated dynamical optical potentials
- Single-Spin Addressing in an Atomic Mott Insulator
- Supersolid formation in a quantum gas breaking continuous translational symmetry
- Quantum information transfer using photons
- Quantum Non-demolition Detection of Single Microwave Photons in a Circuit
- Tunable ion-photon entanglement in an optical cavity
- Coherent Quantum Optical Control with Subwavelength Resolution
- Quantum Feedback Control of Atomic Motion in an Optical Cavity
- REVIEW. Quantum optics with ultracold quantum gases: towards the full quantum regime of the light-matter interaction
- Quantum-gas microscopes - A new tool for cold-atom quantum simulators
- Nano-Scale `Dark State' Optical Potentials for Cold Atoms
- Trapping and observing single atoms in the dark
- Subwavelength-width optical tunnel junctions for ultracold atoms
- Classical stochastic measurement trajectories: Bosonic atomic gases in an optical cavity and quantum measurement backaction
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- Measurement-induced dark state phase transitions in long-ranged fermion systems
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- Tunable and robust long-range coherent interactions between quantum emitters mediated by Weyl bound states
- A Wavefunction Microscope for Ultracold Atoms
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- Universal Noise in Continuous Transport Measurements of Interacting Fermions
- Optical super-resolution sensing of a trapped ion's wave packet size
- Super-resolved imaging of a single cold atom on a nanosecond timescale
- Quantum Scanning Microscope for Cold Atoms
- Coherent optical nano-tweezers for ultra-cold atoms
- Tuning the universality class of phase transitions by feedback: Open quantum systems beyond dissipation
- Complete physical characterization of QND measurements via tomography
- Quantum point spread function for imaging trapped few-body systems with a quantum gas microscope
- A cavity-microscope for micrometer-scale control of atom-photon interactions
- Cavityless self-organization of ultracold atoms due to the feedback-induced phase transition
- Quantum dynamics under simultaneous and continuous measurement of noncommutative observables
- Quantum non-demolition measurements of moving target states
- Tracking evaporative cooling of a mesoscopic atomic quantum gas in real time
- Absence of measurement- and unraveling-induced entanglement transitions in continuously monitored one-dimensional free fermions