A scanning gate microscope for cold atomic gases
arXiv:1702.02135 · doi:10.1103/PhysRevLett.119.030403
Abstract
We present a scanning probe microscopy technique for spatially resolving transport in cold atomic gases, in close analogy with scanning gate microscopy in semiconductor physics. The conductance of a quantum point contact connected to two atomic reservoirs is measured in the presence of a tightly focused laser beam acting as a local perturbation that can be precisely positioned in space. By scanning its position and recording the subsequent variations of conductance, we retrieve a high-resolution map of transport through a quantum point contact. We demonstrate a spatial resolution comparable to the extent of the transverse wave function of the atoms inside the channel, and a position sensitivity below 10nm. Our measurements agree well with an analytical model and ab-initio numerical simulations, allowing us to identify a regime in transport where tunneling dominates over thermal effects. Our technique opens new perspectives for the high-resolution observation and manipulation of cold atomic gases.
arXiv comment5 + 6 pages, 4 + 5 figures
References in corpus (34)
- Advances in atomic force microscopy
- Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
- A quantum gas microscope - detecting single atoms in a Hubbard regime optical lattice
- Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
- Kwant: a software package for quantum transport
- Scanning tunneling spectroscopy of high-temperature superconductors
- Revealing the Superfluid Lambda Transition in the Universal Thermodynamics of a Unitary Fermi Gas
- Coherent Branched Flow in a Two-Dimensional Electron Gas
- Single-atom imaging of fermions in a quantum-gas microscope
- A Quantum Gas Microscope for Fermionic Atoms
- Hysteresis in a quantized, superfluid atomtronic circuit
- Site-resolved Imaging of Fermionic Lithium-6 in an Optical Lattice
- Conduction of Ultracold Fermions Through a Mesoscopic Channel
- Microscopic Observation of Pauli Blocking in Degenerate Fermionic Lattice Gases
- Observation of Quantized Conductance in Neutral Matter
- Imaging and addressing of individual fermionic atoms in an optical lattice
- Quantum transport in ultracold atoms
- Ultra-precise holographic beam shaping for microscopic quantum control
- Virial Theorem and Universality in a Unitary Fermi Gas
- Josephson effect in fermionic superfluids across the BEC-BCS crossover
- An ytterbium quantum gas microscope with narrow-line laser cooling
- Cold atoms in the presence of disorder
- Connecting strongly correlated superfluids by a quantum point contact
- Achieving a BCS transition in an atomic Fermi gas
- Equation of state of the two-dimensional Hubbard model
- On the imaging of electron transport in semiconductor quantum structures by scanning-gate microscopy: successes and limitations
- Mapping out spin and particle conductances in a quantum point contact
- Open quantum systems approach to atomtronics
- Contact resistance and phase slips in mesoscopic superfluid atom transport
- Theory of scanning gate microscopy
- Identifying the `Fingerprint' of Antiferromagnetic Spin-Fluctuations on Iron-Pnictide Superconductivity
- Direct Observation of Fragmentation in a Disordered, Strongly Interacting Fermi Gas
- Lattice assisted spectroscopy: a generalized scanning tunnelling microscope for ultra-cold atoms
- Quantum-statistics-induced flow patterns in driven ideal Fermi gases
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- Tunable non-reciprocal quantum transport through a dissipative Aharonov-Bohm ring in ultracold atoms
- Roadmap on Atomtronics: State of the art and perspective
- Atomtronic circuits: from many-body physics to quantum technologies
- Quantized conductance through a spin-selective atomic point contact
- Band and correlated insulators of cold fermions in a mesoscopic lattice
- Quantized conductance through a dissipative atomic point contact
- Accurate holographic light potentials using pixel crosstalk modelling
- Scanning gate experiments: from strongly to weakly invasive probes
- Partial local density of states from scanning gate microscopy
- Universal Noise in Continuous Transport Measurements of Interacting Fermions
- Glassy properties of Anderson localization: pinning, avalanches and chaos
- Perspective on new implementations of atomtronic circuits
- Cavity-assisted preparation and detection of a unitary Fermi gas
- Non-Fermi Liquids in Conducting 2D Networks
- Controlled Transport between Fermi Superfluids Through a Quantum Point Contact
- Dynamic high-resolution optical trapping of ultracold atoms
- Quantum probe spectroscopy for cold atomic systems
- Many-body interference in bosonic dynamics
- Probing Site-Resolved Current in Strongly Interacting Superconducting Circuit Lattices
- Multi-Particle Tunneling Transport at Strongly-Correlated Interfaces
- Ramsey imaging of optical traps
- A cavity-microscope for micrometer-scale control of atom-photon interactions
- Giant Enhancement of the Thermo-Particle Transport Figure of Merit and Breakdown of the Wiedemann-Franz Law in Unitary Fermi Gases
- Nonequilibrium noise as a probe of pair-tunneling transport in the BCS--BEC Crossover
- Transport of Spin and Mass at Normal-Superfluid Interfaces in the Unitary Fermi Gas
- Design and characterization of a quantum heat pump in a driven quantum gas
- Particle and spin transports of spin-orbit coupled Fermi gas through a Quantum Point Contact
- The confluence of fractured resonances at points of dynamical, many--body flare
- Bound-State Band Reconstruction and Resonance in Spin-1/2 Bose Gas with 1D Spin-Orbit Coupling
- Dual current anomalies and quantum transport within extended reservoir simulations
- Quantum transport between finite reservoirs