We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Experimental realization of strong effective magnetic fields in optical superlattice potentials.
- Authors
Aidelsburger, M.; Atala, M.; Nascimbène, S.; Trotzky, S.; Chen, Y.-A.; Bloch, I.
- Abstract
We present the experimental generation of large effective magnetic fields for ultracold atoms using photon-assisted tunneling in an optical superlattice. The underlying method does not rely on the internal structure of the atoms and, therefore, constitutes a general approach to realize widely tunable artificial gauge fields without the drawbacks of near-resonant optical potentials. When hopping in the lattice, the accumulated phase shift by an atom is equivalent to the Aharonov-Bohm phase of a charged particle exposed to a staggered magnetic field of large magnitude, on the order of one flux quantum per plaquette. We study the ground state of this system and observe that the frustration induced by the magnetic field can lead to a degenerate ground state for non-interacting particles. We provide a local measurement of the phase acquired by single particles due to photon-assisted tunneling. Furthermore, the quantum cyclotron orbit of single atoms in the lattice exposed to the effective magnetic field is directly revealed.
- Subjects
MAGNETIC fields; ULTRACOLD molecules; SUPERLATTICES; OPTICAL lattices; NUCLEAR optical potentials; ATOMIC structure; GAUGE field theory; PHASE shift (Nuclear physics); QUANTUM theory
- Publication
Applied Physics B: Lasers & Optics, 2013, Vol 113, Issue 1, p1
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s00340-013-5418-1