Simultaneous Generation of Arbitrary Assembly of Polarization States with Geometrical-Scaling-Induced Phase Modulation
arXiv:1905.07537 · doi:10.1103/PhysRevX.10.031035
Abstract
Manipulating the polarization of light on the microscale or nanoscale is essential for integrated photonics and quantum optical devices. Nowadays, the metasurface allows one to build on-chip devices that efficiently manipulate the polarization states. However, it remains challenging to generate different types of polarization states simultaneously, which is required to encode information for quantum computing and quantum cryptography applications. By introducing geometrical-scaling-induced (GSI) phase modulations, we demonstrate that an assembly of circularly polarized (CP) and linearly polarized (LP) states can be simultaneously generated by a single metasurface made of L-shaped resonators with different geometrical features. Upon illumination, each resonator diffracts the CP state with a certain GSI phase. The interaction of these diffractions leads to the desired output beams, where the polarization state and the propagation direction can be accurately tuned by selecting the geometrical shape, size, and spatial sequence of each resonator in the unit cell. As an example of potential applications, we show that an image can be encoded with different polarization profiles at different diffraction orders and decoded with a polarization analyzer. This approach resolves a challenging problem in integrated optics and is inspiring for on-chip quantum information processing.
arXiv comment10pages, 6figures, to be published in Physical Review X
References in corpus (12)
- Quantum Cryptography
- Optical Quantum Computing
- Quantum Cryptography with Entangled Photons
- Observation of Bulk Fermi Arc and Polarization Half Charge from Paired Exceptional Points
- Addressable metasurfaces for dynamic holography and optical information encryption
- Experimental Demonstration of Polarization Encoding Measurement-Device-Independent Quantum Key Distribution
- Quantum metasurface for multi-photon interference and state reconstruction
- Satellite-to-ground quantum communication using a 50-kg-class micro-satellite
- Control of interlayer excitons in two-dimensional van der Waals heterostructures
- Nanoscale chiral valley-photon interface through optical spin-orbit coupling
- A Photon-Photon Quantum Gate Based on Rydberg Interactions
- Controlling Surface Plasmons Through Covariant Transformation of the Spin-Dependent Geometric Phase Between Curved Metamaterials