Transverse orbital angular momentum and polarization entangled spatiotemporal structured light

Journal Article · 12 February 2025 · Nanophotonics

DOI: https://doi.org/10.1515/nanoph-2024-0764 · OSTI ID:2521015

Huang, Hsiao-Chih ^[1]; Mu, Kefu ^[1]; Leung, Hui Min  ^[1]; Liao, Chen-Ting  ^[1]

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1. Indiana University, Bloomington, IN (United States)

Intra-system entanglement occurs between non-separable modes within the same system. For optical systems, the various degrees of freedom of light represent different modes, and the potential use of light to create higher dimensional classical entangle states offers a promising potential to drive new technological developments. In this work, we present experimental results demonstrating the orthogonality between transverse orbital angular momentum (t-OAM) of different spatiotemporal topological charges, a previously unverified property of t-OAM. Based on those results, we developed methods to create and characterize a novel family of t-OAM and polarization entangled spatiotemporal structured light. We further provide theoretical analysis to support our study of the entanglement between those modes. By demonstrating the feasibility of leveraging t-OAM as a new family of modes for classical entanglement, our work represents a new advancement towards higher dimensional classical entanglement strategies.

• Research Organization: Indiana University, Bloomington, IN (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Biological and Environmental Research (BER)
• Grant/Contract Number: SC0023314; SC0025194
• OSTI ID: 2521015
• Journal Information: Nanophotonics, Journal Name: Nanophotonics Journal Issue: 6 Vol. 14; ISSN 2192-8606
• Publisher: de GruyterCopyright Statement
• Country of Publication: United States
• Language: English