Zobrazeno 1 - 10
of 824
pro vyhledávání: '"Kosloff, R."'
Publikováno v:
Phys. Rev. Lett. 123, 063401 (2019)
We present an experimental scheme which combines the well established method of velocity-mapimaging, with a cold trapped metastable neon target. The device is used for obtaining the branching ratios and recoil-ion energy distributions for the penning
Externí odkaz:
http://arxiv.org/abs/1904.05672
A systematic approach to design robust control protocols against the influence of different types of noise is introduced. We present control schemes which protect the decay of the populations avoiding dissipation in the adiabatic and non-adiabatic re
Externí odkaz:
http://arxiv.org/abs/1711.09439
Publikováno v:
Phys. Rev. A 96, 053613 (2017)
Photoassociation of ultracold atoms is shown to lead to alignment of the product molecules along the excitation laser polarization axis. We theoretically investigate pulsed photoassociation of $^{87}Rb$ atoms into a specific weakly-bound level of the
Externí odkaz:
http://arxiv.org/abs/1706.06834
Autor:
Torrontegui, E., Lizuain, I., González-Resines, S., Tobalina, A., Ruschhaupt, A., Kosloff, R., Muga, J. G.
Publikováno v:
Phys. Rev. A 96, 022133 (2017)
Shortcuts to adiabaticity let a system reach the results of a slow adiabatic process in a shorter time. We propose to quantify the "energy cost" of the shortcut by the energy consumption of the system enlarged by including the control device. A mecha
Externí odkaz:
http://arxiv.org/abs/1704.06704
Akademický článek
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Publikováno v:
Phys. Rev. Lett. 115, 173003 (2015)
We demonstrate that judicious shaping of a nanosecond-time-scale frequency chirp can dramatically enhance the formation rate of ultracold $^{87}$Rb$_{2}$ molecules. Starting with ultracold $^{87}$Rb atoms, we apply pulses of frequency-chirped light t
Externí odkaz:
http://arxiv.org/abs/1602.08026
Autor:
Torrontegui, E., Kosloff, R.
We analyze different decoherence processes in a system coupled to a bath. Apart from the well known standard dephasing mechanism which is temperature dependent an alternative mechanism is presented, the spin-swap dephasing which does not need initial
Externí odkaz:
http://arxiv.org/abs/1511.00981
Publikováno v:
J. Phys. Chem. A 120, 3032 (2016)
We describe experiments and associated quantum simulations involving the production of ultracold $^{87}$Rb$_{2}$ molecules with nanosecond pulses of frequency-chirped light. With appropriate chirp parameters, the formation is dominated by coherent pr
Externí odkaz:
http://arxiv.org/abs/1510.04672
A closed quantum system is defined as completely controllable if an arbitrary unitary transformation can be executed using the available controls. In practice, control fields are a source of unavoidable noise, which has to be suppressed to retain con
Externí odkaz:
http://arxiv.org/abs/1308.6128
Autor:
Torrontegui, E., Kosloff, R.
A reciprocating quantum refrigerator is analyzed with the intention to study the limitations imposed by external noise. In particular we focus on the behavior of the refrigerator when it approaches the absolute zero. The cooling cycle is based on the
Externí odkaz:
http://arxiv.org/abs/1305.5081