Gauge fields for ultracold atoms in optical superlattices
By F. Gerbier, J. Dalibard. 2009
227 citations recorded by the source corpus.
We present a scheme that produces a strong U(1)-like gauge field on cold atoms confined in a two-dimensional square optical lattice. Our proposal relies on two essential features, a long-lived metastable excited state that exists for alkaline-earth or ytterbium atoms and an optical superlattice. As in the proposal by Jaksch and Zoller (2003 New J. Phys. 5 56), laser-assisted tunneling between adjacent sites creates an effective magnetic field. In the tight-binding approximation, atomic motion is described by the Harper Hamiltonian, with a flux across each lattice plaquette that can realistically take any value between 0 and π. We show how one can take advantage of the superlattice to ensure that each plaquette acquires the same phase, thus simulating a uniform magnetic field. We discuss the observable consequences of the artificial gauge field on non-interacting bosonic and fermionic gases. We also outline how the scheme can be generalized to non-Abelian gauge fields.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/ef8d0ff6e7349dcd545db4724fafb0513c398534
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Colloquium: Artificial gauge potentials for neutral atoms (2010, background): “I.B with a long-lived excited state (Gerbier and Dalibard, 2010; Yi et al., 2008).”
- Topological Phases of Non-Hermitian Systems (2018, methodology): “In a realistic experiment, we can, for example, use (174)Yb atoms and 1117-nm-wavelength lasers to create the antimagic optical lattice with opposite Stark shifts for g 1⁄4 (1)S0 and e 1⁄4 (3)P0 [179].”
- Periodically Driven Quantum Systems: Effective Hamiltonians and Engineered Gauge Fields (2014, methodology): “A similar scheme can be applied to cold atoms in optical lattices, where a uniform synthetic magnetic field would provide a platform to simulate the Hofstadter model [30,32,33,69,70].”
- Artificial gauge fields in materials and engineered systems (2017, unknown): “In order to rectify the field an additional linear potential [165] or a superlattice potential [168] could be”
- Topological quantum matter with ultracold gases in optical lattices (2016, methodology): “This method was proposed to simulate synthetic magnetic fields [33, 70] and spin-orbit coupling [62, 71, 72] in optical lattices, in view of creating topological insulators and superfluids in atomic gases.”
- Observation of two-orbital spin-exchange interactions with ultracold SU(N)-symmetric fermions (2014, background): “tems [1, 8] and quantum information processing schemes [9, 10].”