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Dressing ultra-cold atoms for control and quantum technology
 
Date: 2018-04-08
Time: 16:30
Venue: 物理所M楼830
Speaker: Prof Barry Garraway

Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH, United Kingdom

摘要: Dressing atoms with radio-frequency and microwave radiation opens up new possibilities for ultra-cold atoms and a BEC in new types of trap and in new topologies involving waveguides [1,2]. This is because of the flexibility inherent in the vector coupling of a magnetic dipole moment to electromagnetic fields which can be varied in time, frequency, orientation and space. This may in turn result in quantum technology applications to sensing (with ring traps and gyroscopes [3,4]), metrology, interferometry and atomtronics. In this talk we will introduce the concept of the dressed atom, and present several designs for matter-wave ring traps, as well as rf-dressed lattices for ultra-cold atoms [5,6] and a description of Landau-Zener losses from these traps [7].

References:
[1] Topical Review: Recent developments in trapping and manipulation of atoms with adiabatic potentials, B.M. Garraway and H. Perrin, J. Phys. B 49, 172001 (2016).
[2] Trapping atoms with radio-frequency adiabatic potentials, H. Perrin and B.M. Garraway, in Advances in Atomic, Molecular and Optical Physics, vol. 66, pp 181-262 (2017).
[3] Ring trap for ultracold atoms, O.Morizot, Y.Colombe, V.Lorent, H.Perrin, and B.M.Garraway, Phys. Rev. A 74, 023617 (2006).
[4] Inductively guided circuits for ultracold dressed atoms, G. Sinuco-León, K. Burrows, A.S. Arnold, and B.M. Garraway, Nat. Commun. 5, 5289 (2014).
[5] Radio-frequency dressed lattices for ultracold alkali atoms, G.A. Sinuco-León and B.M. Garraway, New J. Phys. 17, 053037 (2015).
[6] Addressed qubit manipulation in radio-frequency dressed lattices, G.A. Sinuco-León and B.M. Garraway, New J. Phys. 18, 035009 (2016).
[7] Non-adiabatic losses from RF-dressed cold atom traps: beyond the Landau-Zener model, K. Burrows, B.M. Garraway and H. Perrin, Phys. Rev. A 96, 023429 (2017).

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