Introduces the TGS state as the quantum analog of twisted Gaussian Schell-model beams, showing twist-induced nonclassicality via global quadrature squeezing and activation of entanglement in four-mode extensions.
High-Dimensional Quantum Photonics: Roadmap
4 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
The field of high-dimensional quantum photonics involves the use of multimode photonic degrees-of-freedom such as the spatial, temporal, or spectral structure of light to encode multi-level quantum states. Recent years have seen rapid progress in the development of methods to generate, manipulate, and distribute such quantum states of light and their use in a range of quantum technology applications that offer practical advantages over conventional qubit-based approaches. High-dimensional quantum states of light encoded in photonic time-bins, frequency-bins, transverse-spatial modes, waveguide paths, and temporal modes have enabled noise-robust fundamental tests of quantum mechanics, error-resilient and high-capacity quantum communication protocols, andas well as efficient approaches for quantum information processing, to name just a few examples. However, research in this field has progressed fairly independently, with little exchange across different photonic degrees-of-freedom or between experiment and theory and no comprehensive comparison between degrees-of-freedom. This roadmap aims to bridge this gap by surveying progress in each area and identifying shared challenges and opportunities that cut across two or more photonic degrees-of-freedoms. We review early work and state-of-the-art experimental techniques under development for high-dimensional quantum states encoded in single and entangled photons, as well as theoretical tools for their measurement and certification. We outline the main outstanding challenges for theory and each experimental degree-of-freedom, identifying promising future directions of research that may enable these to be overcome. We end by discussing interconnections and shared challenges centered around their distribution, measurement, and manipulation, with a view towards their integration into next-generation quantum technology platforms and applications.
years
2026 4representative citing papers
Defines witness E_NG whose ceiling lower-bounds the Gaussian-irreducible Schmidt number, creating an operational hierarchy for non-Gaussian entanglement in continuous-variable systems.
Adversarially encoded measurement deviations as small as 0.23% can produce false certification of high-dimensional entanglement in provably separable systems, demonstrated experimentally with classical photonic states up to 61 dimensions.
Covariance matrices of coherent OAM eigenmodes and TGSM beams share identical structure and zero/nonzero pattern, enabling second-order equivalence under ABCD transformations for arbitrary radial profiles.
citing papers explorer
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Twisted Gaussian Schell States in Quantum Optics: Twist-Assisted Nonclassicality and Entanglement
Introduces the TGS state as the quantum analog of twisted Gaussian Schell-model beams, showing twist-induced nonclassicality via global quadrature squeezing and activation of entanglement in four-mode extensions.
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Non-Gaussian Entanglement Hierarchy Based on the Schmidt Number
Defines witness E_NG whose ceiling lower-bounds the Gaussian-irreducible Schmidt number, creating an operational hierarchy for non-Gaussian entanglement in continuous-variable systems.
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Faking entanglement with imperceptible measurement deviations
Adversarially encoded measurement deviations as small as 0.23% can produce false certification of high-dimensional entanglement in provably separable systems, demonstrated experimentally with classical photonic states up to 61 dimensions.
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Second-order moment equivalence of twisted Gaussian Schell model beams and orbital angular momentum eigenmodes
Covariance matrices of coherent OAM eigenmodes and TGSM beams share identical structure and zero/nonzero pattern, enabling second-order equivalence under ABCD transformations for arbitrary radial profiles.