Adiabatic preparation of many-body states in optical lattices
نویسندگان
چکیده
Anders S. Sørensen,1 Ehud Altman,2 Michael Gullans,3 J. V. Porto,4 Mikhail D. Lukin,3 and Eugene Demler3 1QUANTOP, The Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark 2Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, IL-76100, Israel 3Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA 4Joint Quantum Institute, NIST, and University of Maryland, Gaithersburg, Maryland 20899, USA (Received 11 June 2009; revised manuscript received 13 January 2010; published 22 June 2010)
منابع مشابه
Tunnelling and the Born–Oppenheimer approximation in optical lattices
We study periodic well-to-well flopping of rubidium atoms in one-dimensional grey optical lattices using a nondestructive, real-time measurement technique and quantum Monte Carlo wavefunction simulations. The observed flopping rates as well as flopping rates extracted from exact band structure calculations can largely be reproduced using adiabatic models that employ the Born–Oppenheimer approxi...
متن کاملAdiabatic preparation of a Heisenberg antiferromagnet using an optical superlattice.
We analyze the possibility to prepare a Heisenberg antiferromagnet with cold fermions in optical lattices, starting from a band insulator and adiabatically changing the lattice potential. The numerical simulation of the dynamics in 1D allows us to identify the conditions for success, and to study the influence that the presence of holes in the initial state may have on the protocol. We also ext...
متن کاملPreparation and detection of magnetic quantum phases in optical superlattices.
We describe a novel approach to prepare, detect, and characterize magnetic quantum phases in ultracold spinor atoms loaded in optical superlattices. Our technique makes use of singlet-triplet spin manipulations in an array of isolated double-well potentials in analogy to recently demonstrated control in quantum dots. We also discuss the many-body singlet-triplet spin dynamics arising from coher...
متن کاملQuantum Information Processing in Optical Lattices and Magnetic Microtraps
We review our experiments on quantum information processing with neutral atoms in optical lattices and magnetic microtraps. Atoms in an optical lattice in the Mott insulator regime serve as a large qubit register. A spindependent lattice is used to split and delocalize the atomic wave functions in a controlled and coherent way over a defined number of lattice sites. This is used to experimental...
متن کاملVortex-Peierls states in optical lattices.
We show that vortices, induced in cold atom superfluids in optical lattices, may order in a novel vortex-Peierls ground state. In such a state vortices do not form a simple lattice but arrange themselves in clusters, within which the vortices are partially delocalized, tunneling between classically degenerate configurations. We demonstrate that this exotic quantum many-body state is selected by...
متن کامل