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Periodic squeezing in a polariton Josephson junction
Albert F Adiyatullin1, Mitchell D Anderson2, Hugo Flayac2
1Institute of Physics, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland. albert.adiyatullin@epfl.ch.
Nature Communications
|November 8, 2017
Summary
Researchers show that coupled bosonic modes, unlike single resonators, can generate significant deviations from standard light statistics by interplay between squeezing and displacement. This opens doors for studying nonclassical light features.
Area of Science:
- Quantum optics
- Condensed matter physics
- Nonlinear optics
Background:
- Kerr nonlinearity is used to generate squeezed light, surpassing quantum noise limits.
- Single Kerr resonators with weak nonlinearity struggle to link field amplitude and squeezing for significant deviations from Poissonian statistics.
Purpose of the Study:
- To demonstrate experimentally that weakly coupled bosonic modes can explore the interplay between squeezing and displacement.
- To achieve strong deviations from Poissonian statistics in light.
Main Methods:
- Experimental demonstration using coupled exciton-polariton modes in a Josephson junction.
- Quantum modeling to trace observed phenomena.
Main Results:
- Periodic bunching observed in a Josephson junction of two coupled exciton-polariton modes.
- Quantum modeling confirmed bunching originates from quadrature squeezing.
Conclusions:
- Weakly coupled bosonic modes enable exploration of squeezing and displacement interplay, leading to non-Poissonian light statistics.
- Results are a precursor to studying nonclassical features in semiconductor microcavities and weakly nonlinear bosonic systems.
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