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Article overview
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Metastable decoherence-free subspaces and electromagnetically induced transparency in interacting many-body systems | | Katarzyna Macieszczak
; YanLi Zhou
; Sebastian Hofferberth
; Juan P. Garrahan
; Weibin Li
; Igor Lesanovsky
; | | Date: |
2 Jun 2017 | | Abstract: | We investigate the dynamics of a generic interacting many-body system under
conditions of electromagnetically induced transparency (EIT). This problem is
of current relevance due to its connection to non-linear optical media realized
by Rydberg atoms. In an interacting system the structure of the dynamics and
the approach to the stationary state becomes far more complex than in the case
of conventional EIT. In particular, we discuss the emergence of a metastable
decoherence free subspace whose dimension grows linearly in the number of
atoms. On approach to stationarity this leads to a slow dynamics which renders
the typical assumption of fast relaxation invalid. We derive analytically the
effective non-equilibrium dynamics in the decoherence free subspace which
features coherent and dissipative two-body interactions. We discuss the use of
this scenario for the preparation of collective entangled dark states of
spin-waves and the realization of general unitary dynamics within the spin-wave
subspace. | | Source: | arXiv, 1706.0714 | | Services: | Forum | Review | PDF | Favorites | |
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