Universal Polarization Transformations: Spatial programming of polarization scattering matrices using a deep learning-designed diffractive polarization transformer

• URL: http://arxiv.org/abs/2304.05724v1
• Date: Wed, 12 Apr 2023 09:28:53 GMT
• Title: Universal Polarization Transformations: Spatial programming of polarization scattering matrices using a deep learning-designed diffractive polarization transformer
• Authors: Yuhang Li, Jingxi Li, Yifan Zhao, Tianyi Gan, Jingtian Hu, Mona Jarrahi, Aydogan Ozcan
• Abstract summary: This framework comprises 2D arrays of linear polarizers with diverse angles, which are positioned between isotropic diffractive layers. We experimentally validated this universal polarization transformation framework in the terahertz part of the spectrum. This framework opens up new avenues for developing novel optical devices for universal polarization control.
• Score: 18.55460674626828
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We demonstrate universal polarization transformers based on an engineered diffractive volume, which can synthesize a large set of arbitrarily-selected, complex-valued polarization scattering matrices between the polarization states at different positions within its input and output field-of-views (FOVs). This framework comprises 2D arrays of linear polarizers with diverse angles, which are positioned between isotropic diffractive layers, each containing tens of thousands of diffractive features with optimizable transmission coefficients. We demonstrate that, after its deep learning-based training, this diffractive polarization transformer could successfully implement N_i x N_o = 10,000 different spatially-encoded polarization scattering matrices with negligible error within a single diffractive volume, where N_i and N_o represent the number of pixels in the input and output FOVs, respectively. We experimentally validated this universal polarization transformation framework in the terahertz part of the spectrum by fabricating wire-grid polarizers and integrating them with 3D-printed diffractive layers to form a physical polarization transformer operating at 0.75 mm wavelength. Through this set-up, we demonstrated an all-optical polarization permutation operation of spatially-varying polarization fields, and simultaneously implemented distinct spatially-encoded polarization scattering matrices between the input and output FOVs of a compact diffractive processor that axially spans 200 wavelengths. This framework opens up new avenues for developing novel optical devices for universal polarization control, and may find various applications in, e.g., remote sensing, medical imaging, security, material inspection and machine vision.

Related papers

• Shaping Single Photons through Multimode Optical Fibers using Mechanical Perturbations [55.41644538483948]
  We show an all-fiber approach for controlling the shape of single photons and the spatial correlations between entangled photon pairs. We optimize these perturbations to localize the spatial distribution of a single photon or the spatial correlations of photon pairs in a single spot.
  arXiv  Detail & Related papers  (2023-06-04T07:33:39Z)
• Enhanced-sensitivity interferometry with phase-sensitive unbiased multiports [68.8204255655161]
  We introduce interferometric devices by combining optical feedback with unbiased multiports. Unlike traditional beam dividers, unbiased multiports allow light to reflect back out of the port from which it originated.
  arXiv  Detail & Related papers  (2023-05-31T18:18:02Z)
• Magnetic-field-induced cavity protection for intersubband polaritons [52.77024349608834]
  We analyse the effect of a strong perpendicular magnetic field on an intersubband transition in a disordered doped quantum well strongly coupled to an optical cavity. The magnetic field changes the lineshape of the intersubband optical transition due to the roughness of the interface of the quantum well from a Lorentzian to a Gaussian one.
  arXiv  Detail & Related papers  (2022-10-14T18:00:03Z)
• Quantifying polarization changes induced by rotating Dove prisms and K-mirrors [0.0]
  Dove prisms and K-mirrors are devices extensively used for rotating the wavefront of an optical field. We theoretically and experimentally investigate polarization changes induced in the transmitted field by a rotating K-mirror.
  arXiv  Detail & Related papers  (2022-08-01T13:12:54Z)
• Tunable directional photon scattering from a pair of superconducting qubits [105.54048699217668]
  In the optical and microwave frequency ranges tunable directionality can be achieved by applying external magnetic fields. We demonstrate tunable directional scattering with just two transmon qubits coupled to a transmission line.
  arXiv  Detail & Related papers  (2022-05-06T15:21:44Z)
• Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
  We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces. With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
  arXiv  Detail & Related papers  (2022-03-28T19:37:08Z)
• Polarization Multiplexed Diffractive Computing: All-Optical Implementation of a Group of Linear Transformations Through a Polarization-Encoded Diffractive Network [0.0]
  We introduce a polarization multiplexed diffractive processor to all-optically perform arbitrary linear transformations. A single diffractive network can successfully approximate and all-optically implement a group of arbitrarily-selected target transformations. This processor can find various applications in optical computing and polarization-based machine vision tasks.
  arXiv  Detail & Related papers  (2022-03-25T07:10:47Z)
• Flat-optics generation of broadband photon pairs with tunable polarization entanglement [0.0]
  Polarization entanglement is central to quantum photonics due to the simplicity of polarization qubit encoding and control. We use relaxed phase matching of flat nonlinear optical sources to generate photon pairs with tunable polarization entanglement. In combination with the broadband frequency spectrum, it results in an ultranarrow (12 fs) Hong-Ou-Mandel effect and promises extensions to hyperentanglement.
  arXiv  Detail & Related papers  (2022-01-24T08:24:51Z)
• All-optical input-agnostic polarization transformer via experimental Kraus-map control [0.0]
  We experimentally demonstrate an all-optical input-agnostic polarization transformer (AI-APT) It transforms all input states of polarization to a particular state that can be polarized or partially polarized. The AI-APT is completely passive, and thus can be used as a polarization controller or stabilizer for single photons and ultrafast pulses.
  arXiv  Detail & Related papers  (2021-03-09T12:39:47Z)
• Complex-birefringent dielectric metasurfaces for arbitrary polarization-pair transformations [2.4437346122124377]
  Birefringent materials or nanostructures that introduce phase differences between two linear polarizations underpin the operation of wave plates for polarization control of light. We develop metasurfaces realizing a distinct class of complex-birefringent wave plates, which combine polarization transformation with a judiciously tailored polarization-dependent phase retardance and amplitude filtering via diffraction.
  arXiv  Detail & Related papers  (2020-06-30T06:46:35Z)
• Hyperentanglement in structured quantum light [50.591267188664666]
  Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes. We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
  arXiv  Detail & Related papers  (2020-06-02T18:00:04Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.