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

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

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

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)

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

Date: 
2014-12-19
Author(s): 

Andrea Alberti, Wolfgang Alt, Reinhard Werner, Dieter Meschede

Reference: 

New J. Phys. 16, 123052 (2014)

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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