Quantum Photon Manipulation and Measurement With Ultra-Thin Metasurfaces
Abstract
The project developed ultra-thin optical metasurfaces for flexible control of the quantum photon polarization states in unconventional regimes. The key advantage of this platform is that the parallel photon interference in nano-resonator arrays enables ultimate miniaturization, in contrast to sequential interference stages in conventional quantum circuits. We have designed metasurfaces with binary nanoresonator arrays that realize simultaneous polarization manipulation and filtering, operating across the telecommunication wavelengths. The metasurfaces can implement arbitrary polarization transformations of entangled photon pairs, and in particular can change the degree of quantum entanglement. We fabricated the metasurfaces on a dielectric platform without material absorption and demonstrated their high efficiency in experiments. Such ultra-thin meta-devices can find applications in quantum network components. Furthermore, we found that the metasurfaces can enable discrimination of polarization objects, with possible applications from microscopy to monitoring of network links. We also developed new efficient approaches for one-shot multi-photon polarization state measurement with a single metagrating even in presence of fabrication imperfections, and for monitoring deviations from a target polarization state. The latter results can facilitate diverse applications demanding quantum state characterization.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 26, 2021
- Accession Number
- AD1150341
Entities
People
- Andrey A. Sukhorukov
Organizations
- Australian National University