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23 April 2024 |
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Delocalization-enhanced Bloch oscillations and driven resonant tunneling in optical lattices for precision force measurements | | M. G. Tarallo
; A. Alberti
; N. Poli
; M. L. Chiofalo
; F.-Y. Wang
; G. M. Tino
; | | Date: |
9 Jul 2012 | | Abstract: | In this paper we describe and compare different methods used for accurate
determination of forces acting on matter-wave packets in optical lattices. The
quantum interference nature responsible for the production of both Bloch
oscillations and coherent delocalization is investigated in detail. We study
conditions for optimal detection of Bloch oscillation for a thermal ensemble of
cold atoms with a large velocity spread. We report on the experimental
observation of resonant tunneling in an amplitude-modulated (AM) optical
lattice up to the sixth harmonic with Fourier-limited linewidth. We then
explore the fundamental and technical phenomena which limit both the
sensitivity and the final accuracy of the atomic force sensor at 10^{-7}
precision level [1], with an analysis of the coherence time of the system and
addressing few simple setup changes to go beyond the current accuracy. | | Source: | arXiv, 1207.2123 | | Services: | Forum | Review | PDF | Favorites | |
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