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Periodic squeezing in a polariton Josephson junction
#MMPMID29109422
Adiyatullin AF
; Anderson MD
; Flayac H
; Portella-Oberli MT
; Jabeen F
; Ouellet-Plamondon C
; Sallen GC
; Deveaud B
Nat Commun
2017[Nov]; 8
(1
): 1329
PMID29109422
show ga
The use of a Kerr nonlinearity to generate squeezed light is a well-known way to
surpass the quantum noise limit along a given field quadrature. Nevertheless, in
the most common regime of weak nonlinearity, a single Kerr resonator is unable to
provide the proper interrelation between the field amplitude and squeezing
required to induce a sizable deviation from Poissonian statistics. We demonstrate
experimentally that weakly coupled bosonic modes allow exploration of the
interplay between squeezing and displacement, which can give rise to strong
deviations from the Poissonian statistics. In particular, we report on the
periodic bunching in a Josephson junction formed by two coupled exciton-polariton
modes. Quantum modeling traces the bunching back to the presence of quadrature
squeezing. Our results, linking the light statistics to squeezing, are a
precursor to the study of nonclassical features in semiconductor microcavities
and other weakly nonlinear bosonic systems.
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