Robust non-Markovianity in ultracold gases

Abstract

We study the effect of thermal fluctuations on a probe qubit interacting with a Bose-Einstein condensed (BEC) reservoir. The zero-temperature case was studied in [Haikka P et al 2011 Phys. Rev. A 84 031602], where we proposed a method to probe the effects of dimensionality and scattering length of a BEC based on its behavior as an environment. Here we show that the sensitivity of the probe qubit is remarkably robust against thermal noise. We give an intuitive explanation for the thermal resilience, showing that it is due to the unique choice of the probe qubit architecture of our model.

Submitted to FQMT11 topical issue of the Physica Scripta

References in corpus (6)

• Many-Body Physics with Ultracold Gases
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Continuous variable quantum key distribution in non-Markovian channels
• Quantifying, characterizing and controlling information flow in ultracold atomic gases
• Collective decoherence of cold atoms coupled to a Bose-Einstein condensate

Cited by in corpus (5)

• Invasiveness of non-equilibrium quantum thermometry
• Suppression of ac Stark shift scattering rate due to non-Markovian behavior
• Non-Markovian qubit dynamics in a circuit-QED setup
• Interspecies entanglement with impurity atoms in a lattice gas
• Determining the squeezing in multimode fields using nonlocal quantum probes