High-resolution imaging of ultracold fermions in microscopically tailored optical potentials

  title={High-resolution imaging of ultracold fermions in microscopically tailored optical potentials},
  author={Bruno Zimmermann and Torben Mueller and Jakob Meineke and Tilman Esslinger and Henning Moritz},
  journal={New Journal of Physics},
We report on the local probing and preparation of an ultracold Fermi gas on the length scale of one micrometer, i.e. of the order of the Fermi wavelength. The essential tool of our experimental setup is a pair of identical, high-resolution microscope objectives. One of the microscope objectives allows local imaging of the trapped Fermi gas of 6Li atoms with a maximum resolution of 660 nm, while the other enables the generation of arbitrary optical dipole potentials on the same length scale… 

Figures from this paper

Microscopic probing and manipulation of ultracold fermions
This thesis reports on experiments that provide for the first time a local access to the microscopic quantum many-body physics of ultracold atomic fermions. A quantum gas of 6Li atoms is optically
Single-Atom Resolved Imaging and Manipulation in an Atomic Mott Insulator
This thesis reports on new experimental techniques for the study of strongly correlated states of ultracold atoms in optical lattices. We used a high numerical aperture imaging system to probe 87Rb
Configurable microscopic optical potentials for Bose-Einstein condensates using a digital-micromirror device
The development of novel trapping potentials for degenerate quantum gases has been an important factor driving experimental progress in the field. The introduction of spatial light modulators (SLMs)
Mesoscopic conduction in ultracold Fermi gases
In this thesis the conduction properties of ultracold Fermi gases are explored in a setup which is analogous to mesoscopic electronic devices. Fermionic Li atoms are the atomic counterpart to
Fluctuations and correlations in ultracold Fermi gases
In this thesis we present the first in-situ measurement of densityand spin-fluctuations in trapped ultracold Fermi gases with a spatial resolution on the intrinsic scale set by the Fermi wavelength.
Probing Correlated Quantum Many-Body Systems at the Single-Particle Level
The detection of correlation and response functions plays a crucial role in the experimental characterization of quantum many-body systems. In this thesis, we present novel techniques for the
Interfacing ultracold atoms with nanomagnetic domain walls
This thesis presents the first realisation of a new type of hybrid quantum device based on spintronic technology. We demonstrate an interaction between the magnetic fringing fields produced by domain
Imaging topologically protected transport with quantum degenerate gases
Ultracold and quantum degenerate gases held near conductive surfaces can serve as sensitive, high resolution, and wide-area probes of electronic current flow. Previous work has imaged transport
Few-particle quantum magnetism with ultracold atoms
This thesis reports on the deterministic preparation of magnetically ordered states in systems of few fermionic atoms. We follow the concept of quantum simulation and use 6Li atoms in two different
Interacting bosons and fermions in three-dimensional optical lattice potentials : from atom optics to quantum simulation
This thesis reports on the realization, characterization and analysis of ultracold bosonic and fermionic atoms in three-dimensional optical lattice potentials. Ultracold quantum gases in optical


High-resolution scanning electron microscopy of an ultracold quantum gas
Our knowledge of ultracold quantum gases is strongly influenced by our ability to probe these objects. In situ imaging combined with single-atom sensitivity is an especially appealing scenario, as it
Single-atom-resolved fluorescence imaging of an atomic Mott insulator
Fluorescence imaging of strongly interacting bosonic Mott insulators in an optical lattice with single-atom and single-site resolution is reported, which fully reconstructs the atom distribution on the lattice and identifies individual excitations with high fidelity.
Microscopy of ultracold fermionic lithium
A unique feature of ultra-cold lithium atoms is that their scattering properties are determined by a precisely controllable two-body scattering length, which can be tuned over a wide range by
Resolving and addressing atoms in individual sites of a CO 2 -laser optical lattice
Summary form only given. Standing wave laser fields produce a periodic potential for atoms, which can trap cold atoms in an ordered crystal-like structure to form an optical lattice. Optical lattices
Probing the Superfluid–to–Mott Insulator Transition at the Single-Atom Level
Single atom–single lattice site imaging is used to investigate the Bose-Hubbard model on a microscopic level and enables space- and time-resolved characterization of the number statistics across the superfluid–Mott insulator quantum phase transition.
Experimental demonstration of single-site addressability in a two-dimensional optical lattice.
This work demonstrates single-site addressability in a two-dimensional optical lattice with 600 nm lattice spacing and finds that the patterns are remarkably stable against tunneling diffusion.
Imaging single atoms in a three dimensional array
Asingle neutral atom trapped by light is a promising qubit. It has weak, well-understood interactions with the environment, its internal state can be precisely manipulated1, interactions that
A quantum gas microscope for detecting single atoms in a Hubbard-regime optical lattice
A quantum gas ‘microscope’ that bridges the two approaches to creating highly controllable quantum information systems, realizing a system in which atoms of a macroscopic ensemble are detected individually and a complete set of degrees of freedom for each of them is determined through preparation and measurement.
A New Objective for High Resolution Imaging of
A New Objective for High Resolution Imaging of Bose-Einstein Condensates In the framework of this thesis a new imaging system for the measurement of the atomic density distribution in Bose-Einstein
Bose gas in a single-beam optical dipole trap
We study an ultracold Bose gas in an optical dipole trap consisting of one single focused laser beam. An analytical expression for the corresponding density of states beyond the usual harmonic