Intrinsic Heating and Cooling in Adiabatic Processes for Bosons in Optical Lattices

Abstract

We show that by raising the lattice "adiabatically" as in all current optical lattice experiments on bosons, even though the temperature may decrease initially, it will eventually rise linearly with lattice height, taking the system further away from quantum degeneracy. This increase is {\rm intrinsic} and is caused by the {\em adiabatic compression} during the raising of red detuned lattices. However, the origin of this heating, which is {\em entirely different} from that in the bulk, also shows that one can {\em reverse} the temperature rise to reach quantum degeneracy by {\em adiabatic expansion}, which can be achieved by using blue detuned lasers.

arXiv comment4 pages, 3 figures, misprints are corrected and an additional acknowledgement is added

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Cited by in corpus (59)

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• Suppression of the critical temperature for superfluidity near the Mott transition: validating a quantum simulator
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• Cooling and entangling ultracold atoms in optical lattices
• Condensate fraction in a 2D Bose gas measured across the Mott-insulator transition
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• Transitionless quantum drivings for the harmonic oscillator
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• Slow Mass Transport and Statistical Evolution of An Atomic Gas Across the Superfluid-Mott Insulator Transition
• Cooling and Near-equilibrium Dynamics of Atomic Gases Across the Superfluid-Mott Insulator Transition
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• Squeezing Out the Entropy of Fermions in Optical Lattices
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• Lattice Thermodynamics for Ultra-Cold Atoms
• Finite temperature study of bosons in a two dimensional optical lattice
• Realization of a Bosonic Antiferromagnet
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• Near-adiabatic parameter changes in correlated systems: Influence of the ramp protocol on the excitation energy
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• Thermal and quantum noncondensate particles near the superfluid to Mott insulator transition
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