کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1538711 | 996619 | 2010 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Creation of pure multi-mode entangled states in a ring cavity Creation of pure multi-mode entangled states in a ring cavity](/preview/png/1538711.png)
Practical schemes for creation of multi-mode squeezed (entangled) states of atomic ensembles located inside a high-Q ring cavity are discussed. It is assumed that the cavity is composed of two degenerate mutually counter-propagating modes that can simultaneously couple to the atomic ensembles with the same coupling strengths. The ensembles are composed of ultra-cold atoms which are modeled as four-level systems driven by two laser fields, both co-propagating with one of the cavity directions. We illustrate a procedure that constructs multi-mode squeezed states from the vacuum by a unitary transformation associated with the collective dynamics of the atomic ensembles subjected to driving lasers of a suitably adjusted amplitudes and phases. The lasers pulses together with the cavity dissipation prepare the collective modes in a desired stationary squeezed state.
Journal: Optics Communications - Volume 283, Issue 5, 1 March 2010, Pages 814–821