caa a22 4500 445867558 CHVBK 20180317145502.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1140/epjd/e2010-10353-2 doi (NATIONALLICENCE)springer-10.1140/epjd/e2010-10353-2 Optically-driven cooling for collective atomic excitations [Elektronische Daten] [Y. Li, Z. D. Wang, C. P. Sun] Abstract.: We explore how to cool collective atomic excitations in an optically-driven three-level atomic ensemble, which may be described by a model of two coupled harmonic oscillators (HOs) with a time-dependent coupling. Moreover, the model of two coupled HOs is further generalized to address the resolved sideband cooling issues, where the lower-frequency HO can be cooled whenever the cooling process dominates over the heating one during the sideband transitions. Unusually, due to the absence of the heating process, the optimal result for cooling collective excitations in an atomic ensemble could break the standard resolved sideband cooling limit for general models of two coupled HOs. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2010 Li Y. Department of Physics and Center of Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China aut Wang Z. D. Department of Physics and Center of Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China aut Sun C. P. Institute of Theoretical Physics, The Chinese Academy of Sciences, 100190, Beijing, P.R. China aut The European Physical Journal D Springer-Verlag 61/1(2011-01-01), 215-220 1434-6060 61:1<215 2011 61 10053 https://doi.org/10.1140/epjd/e2010-10353-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2010-10353-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Y. Department of Physics and Center of Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China aut NATIONALLICENCE 700 1- Wang Z. D. Department of Physics and Center of Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China aut NATIONALLICENCE 700 1- Sun C. P. Institute of Theoretical Physics, The Chinese Academy of Sciences, 100190, Beijing, P.R. China aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 61/1(2011-01-01), 215-220 1434-6060 61:1<215 2011 61 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer