Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 59: Quantum Effects: Interference and Correlations

Q 59.2: Talk

Friday, March 18, 2011, 10:45–11:00, SCH A01

Fidelity at quantum resonance for kicked atoms in a gravitational field — •Remy Dubertrand and Sandro Wimberger — Institut for Theoretical Physik, Heidelberg, Germany

We are interested in a generalisation of the kicked rotor system when a constant field term is added, modeling gravity in experiments. Such a difference has already shown significantly new consequences, especially the quantum accelerator modes observed by Oberthaler et al. [1]. We will first remind the pseudo-classical formalism introduced by Fishman et al. [2]. Then the fidelity of quantum kicked rotors at a quantum resonance will be derived. Lastly the experimental state of the art and our theoretical perspectives based on the mentioned pseudo-classical method along the lines of [3] will be shortly described.

[1] M. K. Oberthaler et al., Phys. Rev. Lett. 83, 4447 (1999)

[2] S. Fishman et al., J. Stat. Phys. 110, 911 (2003)

[3] M. Abb et al., Phys. Rev. E 80, 035206(R) (2009)