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18.30.+a Atoms close to surfaces/in laser fields or cavities

Adsorbate dynamics on a silica-coated gold surface measured by Rydberg Stark spectroscopy

Thu, 2016-03-10 16:47 - shimon machluf
Date: 
2016-04-18
Author(s): 

J. Naber, S. Machluf, L. Torralbo-Campo, M. L. Soudijn, N. J. van Druten, H. B. van Linden van den Heuvell, and R. J. C. Spreeuw

Reference: 

Journal of Physics B: Atomic, Molecular and Optical Physics, Volume 49, Number 9

URL: 

http://stacks.iop.org/0953-4075/49/i=9/a=094005

Imaging electric fields in the vicinity of cryogenic surfaces using Rydberg atoms

Sat, 2016-02-06 15:05 - Johannes Deiglmayr
Date: 
2015-12-28
Author(s): 

T. Thiele, J. Deiglmayr, M. Stammeier, J.-A. Agner, H. Schmutz, F. Merkt, and A. Wallraff

Reference: 

Phys. Rev. A 92, 063425 (2015)

URL: 

http://journals.aps.org/pra/abstract/10.1103/PhysRevA.92.063425

The ability to characterize static and time-dependent electric fields in situ is an important prerequisite for quantum-optics experiments with atoms close to surfaces. Especially in experiments which aim at coupling Rydberg atoms to the near field of superconducting circuits, the identification and subsequent elimination of sources of stray fields are crucial.

Decoherence Models for Discrete-Time Quantum Walks and their Application to Neutral Atom Experiments

Tue, 2014-10-21 15:08 - Wolfgang Alt
Date: 
2014-12-19
Author(s): 

Andrea Alberti, Wolfgang Alt, Reinhard Werner, Dieter Meschede

Reference: 

New J. Phys. 16, 123052 (2014)

URL: 

http://dx.doi.org/10.1088/1367-2630/16/12/123052

We discuss decoherence in discrete-time quantum walks in terms of a phenomenological model that distinguishes spin and spatial decoherence. We identify the dominating mechanisms that affect quantum-walk experiments realized with neutral atoms walking in an optical lattice.

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