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Exceptional points for photon pairs bound by nonlinear dissipation in cavity arrays
Optics Letters
|December 15, 2018
Summary
We discovered bound two-photon states in a dissipative Bose-Hubbard model. The system
Area of Science:
- Quantum optics
- Condensed matter physics
Background:
- The Bose-Hubbard model describes interacting bosons in a lattice.
- Dissipative systems introduce non-conservative interactions.
Purpose of the Study:
- Investigate bound two-photon states in a dissipative Bose-Hubbard model.
- Explore the role of photon-photon interactions and dissipation.
Main Methods:
- Theoretical study of the dissipative Bose-Hubbard model.
- Analysis of tunneling-coupled cavities with non-conservative interactions.
Main Results:
- Bound two-photon states form in limited or full Brillouin zones.
- Transition between regimes depends on dissipative interaction strength.
- Exceptional points observed in the complex energy spectrum.
Conclusions:
- Enhanced understanding of non-Hermiticity and interactions in quantum structures.
- Potential for on-demand nonlinear light generation in photonic lattices.
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