ORCID Profile
0000-0002-5083-5423
Current Organisations
University of Colorado at Boulder
,
University of Amsterdam
,
University of Queensland
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Publisher: IOP Publishing
Date: 17-02-2016
Publisher: IOP Publishing
Date: 10-12-2015
Publisher: American Physical Society (APS)
Date: 22-08-2011
Publisher: Springer Science and Business Media LLC
Date: 14-04-2016
DOI: 10.1038/NCOMMS11279
Abstract: Polar molecules in an optical lattice provide a versatile platform to study quantum many-body dynamics. Here we use such a system to prepare a density distribution where lattice sites are either empty or occupied by a doublon composed of an interacting Bose-Fermi pair. By letting this out-of-equilibrium system evolve from a well-defined, but disordered, initial condition, we observe clear effects on pairing that arise from inter-species interactions, a higher partial-wave Feshbach resonance and excited Bloch-band population. These observations facilitate a detailed understanding of molecule formation in the lattice. Moreover, the interplay of tunnelling and interaction of fermions and bosons provides a controllable platform to study Bose-Fermi Hubbard dynamics. Additionally, we can probe the distribution of the atomic gases in the lattice by measuring the inelastic loss of doublons. These techniques realize tools that are generically applicable to studying the complex dynamics of atomic mixtures in optical lattices.
Publisher: IOP Publishing
Date: 13-09-2018
Publisher: IOP Publishing
Date: 07-2017
Publisher: American Physical Society (APS)
Date: 09-03-2017
Publisher: American Physical Society (APS)
Date: 05-09-2017
Publisher: American Physical Society (APS)
Date: 21-03-2013
Publisher: American Physical Society (APS)
Date: 16-01-2018
Publisher: Springer Science and Business Media LLC
Date: 22-05-2017
DOI: 10.1038/NPHYS4119
Publisher: American Physical Society (APS)
Date: 30-11-2016
Publisher: IOP Publishing
Date: 29-05-2018
Publisher: American Physical Society (APS)
Date: 28-09-2012
Publisher: American Physical Society (APS)
Date: 24-03-2015
Publisher: American Physical Society (APS)
Date: 05-04-2023
Publisher: American Physical Society (APS)
Date: 22-02-2013
Publisher: American Physical Society (APS)
Date: 27-07-2018
Publisher: IOP Publishing
Date: 03-2022
Abstract: Reaching ultracold temperatures within hybrid atom–ion systems is a major limiting factor for control and exploration of the atom–ion interaction in the quantum regime. In this work, we present results on numerical simulations of trapped ion buffer gas cooling using an ultracold atomic gas in a large number of experimentally realistic scenarios. We explore the suppression of micromotion-induced heating effects through optimization of trap parameters for various radio-frequency (rf) traps and rf driving schemes including linear and octupole traps, digital Paul traps, rotating traps and hybrid optical/rf traps. We find that very similar ion energies can be reached in all of them even when considering experimental imperfections that cause so-called excess micromotion. Moreover we look into a quantum description of the system and show that quantum mechanics cannot save the ion from micromotion-induced heating in an atom–ion collision. The results suggest that buffer gas cooling can be used to reach close to the ion’s groundstate of motion and is even competitive when compared to some sub-Doppler cooling techniques such as Sisyphus cooling. Thus, buffer gas cooling is a viable alternative for ions that are not amenable to laser cooling, a result that may be of interest for studies into cold controlled quantum chemistry and charged impurity physics.
Publisher: American Physical Society (APS)
Date: 18-12-2015
Publisher: Springer Science and Business Media LLC
Date: 05-02-2018
Publisher: American Physical Society (APS)
Date: 06-10-2014
Publisher: American Physical Society (APS)
Date: 30-10-2014
Publisher: American Physical Society (APS)
Date: 02-12-2011
Publisher: American Physical Society (APS)
Date: 03-01-2017
Publisher: IOP Publishing
Date: 17-01-2013
No related grants have been discovered for ARGHAVAN SAFAVI-NAINI.