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Variance Sum Rule for Entropy Production

Autor: Di Terlizzi, I., Gironella, M., Herraez-Aguilar, D., Betz, T., Monroy, F., Baiesi, M., Ritort, F.

Publikováno v: Science, 383, 971-976 (2024)

Entropy production is the hallmark of nonequilibrium physics, quantifying irreversibility, dissipation, and the efficiency of energy transduction processes. Despite many efforts, its measurement at the nanoscale remains challenging. We introduce a va

Externí odkaz: http://arxiv.org/abs/2302.08565

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Two-point density correlations of quasicondensates in free expansion

Autor: Manz, S., Bücker, R., Betz, T., Koller, Ch., Hofferberth, S., Mazets, I. E., Imambekov, A., Demler, E., Perrin, A., Schmiedmayer, J., Schumm, T.

Publikováno v: Phys. Rev. A 81, 031610(R) (2010)

We measure the two-point density correlation function of freely expanding quasicondensates in the weakly interacting quasi-one-dimensional (1D) regime. While initially suppressed in the trap, density fluctuations emerge gradually during expansion as

Externí odkaz: http://arxiv.org/abs/0911.2376

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Single-particle-sensitive imaging of freely propagating ultracold atoms

Autor: Bücker, R., Perrin, A., Manz, S., Betz, T., Koller, Ch., Plisson, T., Rottmann, J., Schumm, T., Schmiedmayer, J.

Publikováno v: New J. Phys. 11 (2009) 103039

We present a novel imaging system for ultracold quantum gases in expansion. After release from a confining potential, atoms fall through a sheet of resonant excitation laser light and the emitted fluorescence photons are imaged onto an amplified CCD

Externí odkaz: http://arxiv.org/abs/0907.0674

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