Temporally Asymmetric Biphoton States in Cavity-Enhanced Optical Parametric Processes
Abstract
Generation and control of quantum states of light on an integrated platform have become essential tools for scalable quantum technologies. Chip-scale sources such as nonlinear optical microcavities have been demonstrated to efficiently generate entangled biphoton states. However, these systems have little control over the continuous-variable time-energy entanglement of the photons. We demonstrate such control by preparing biphoton states with asymmetric temporal wave functions. This is done by selectively modifying the density of states of the cavity modes participating in the interaction using Rayleigh-scattering-induced strong coupling of optical modes of a resonator. These states reveal exotic coherence properties and show a path forward for continuous-variable quantum-state engineering on a chip.
- Publication:
-
Physical Review Applied
- Pub Date:
- November 2019
- DOI:
- 10.1103/PhysRevApplied.12.054019
- arXiv:
- arXiv:1904.09686
- Bibcode:
- 2019PhRvP..12e4019J
- Keywords:
-
- Physics - Optics;
- Quantum Physics
- E-Print:
- 7 pages, 6 figures (including Appendix)