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Variational renormalization group for dissipative spin-cavity systems: periodic pulses of nonclassical photons from mesoscopic spin ensembles

Authors
  • Dhar, HS
  • Zens, M
  • Krimer, DO
  • Rotter, S
Publication Date
Sep 01, 2018
Source
Spiral - Imperial College Digital Repository
Keywords
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Abstract

Mesoscopic spin ensembles coupled to a cavity offer the exciting prospect of observing complex nonclassical phenomena that pool the microscopic features from a few spins with those of macroscopic spin ensembles. Here, we demonstrate how the collective interactions in an ensemble of as many as a hundred spins can be harnessed to obtain a periodic pulse train of nonclassical light. To unravel the full quantum dynamics and photon statistics, we develop a time-adaptive variational renormalization group method that accurately captures the underlying Lindbladian dynamics of the mesoscopic spin-cavity system.

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