An energy-resolved atomic scanning probe
arXiv:1610.01903 · doi:10.1088/1367-2630/aaedcf
Abstract
We propose a method to probe the local density of states (LDOS) of atomic systems that provides both spatial and energy resolution. The method combines atomic and tunneling techniques to supply a simple, yet quantitative and operational, definition of the LDOS for both interacting and non-interacting systems: It is the rate at which particles can be siphoned from the system of interest by a narrow energy band of non-interacting states contacted locally to the many-body system of interest. Ultracold atoms in optical lattices are a natural platform for implementing this broad concept to visualize the energy and spatial dependence of the atom density in interacting, inhomogeneous lattices. This includes models of strongly correlated condensed matter systems, as well as ones with non-trivial topologies.
arXiv comment9 pages, 7 figures; Appeared in the Focus on Quantum Transport in Ultracold Atoms in the New Journal of Physics
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- Local-noise spectroscopy for non-equilibrium systems
- Gibbs phenomenon and the emergence of the steady-state in quantum transport
- Transport in a periodically driven tilted lattice via the extended reservoir approach: Stability criterion for recovering the continuum limit
- The impact of speckle disorder on a superfluid Fermi system
- Tunneling Spectroscopy in Superconducting Circuit Lattices
- The confluence of fractured resonances at points of dynamical, many--body flare
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- Dual current anomalies and quantum transport within extended reservoir simulations