Photon-Assisted Tunneling in a Biased Strongly Correlated Bose Gas
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)
We study the impact of coherently generated lattice photons on an atomic Mott insulator subjected to a uniform force. Analogous to an array of tunnel-coupled and biased quantum dots, we observe sharp, interaction-shifted photon-assisted tunneling resonances corresponding to tunneling one and two lattice sites either with or against the force and resolve multiorbital shifts of these resonances. By driving a Landau-Zener sweep across such a resonance, we realize a quantum phase transition between a paramagnet and an antiferromagnet and observe quench dynamics when the system is tuned to the critical point. Direct extensions will produce gauge fields and site-resolved spin flips, for topological physics and quantum computing.
- OSTI ID:
- 21611594
- Journal Information:
- Physical Review Letters, Vol. 107, Issue 9; Other Information: DOI: 10.1103/PhysRevLett.107.095301; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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