Quantum skyrmions and high dimensional entanglement mediated by nanophotonics

Amit Kam; Shai Tsesses; Lior Fridman; Yigal Ilin; Amir Sivan; Guy Sayer; Stav Lotan; Kobi Cohen; Amit Shaham; Liat Nemirovsky-Levy; Larisa Popilevsky; Aviv Karnieli; Meir Orenstein; Mordechai Segev; Guy Bartal

doi:10.1186/s43593-026-00124-1

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Quantum skyrmions and high dimensional entanglement mediated by nanophotonics

eLight Vol. 6, (2026)

Research Article | Updated：2026-07-21

- Quantum skyrmions and high dimensional entanglement mediated by nanophotonics
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- DOI：10.1186/s43593-026-00124-1
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- Received：20 September 2025，
  
  Revised：2026-01-19，
  
  Accepted：20 January 2026，
  
  Online First：07 April 2026，
  
  Published：2026-12
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Amit Kam, Shai Tsesses, Lior Fridman, et al. Quantum skyrmions and high dimensional entanglement mediated by nanophotonics[J]. eLight, 2026, 6.
DOI：

Amit Kam, Shai Tsesses, Lior Fridman, et al. Quantum skyrmions and high dimensional entanglement mediated by nanophotonics[J]. eLight, 2026, 6. DOI： 10.1186/s43593-026-00124-1.

摘要

Abstract

Quantum nanophotonics offers essential tools and technologies for controlling quantum states

while maintaining a miniature form factor and high scalability. Nanophotonic platforms can transfer information from the traditional degrees of freedom (DoFs) of photons

such as spin angular momentum (SAM) and orbital angular momentum (OAM)

to the DoFs of the nanophotonic platform—and back

opening new directions for quantum information processing. Recent experiments have utilized

for entanglement the total angular momentum (TAM) of a photon—as a unique DoF of nanophotonic platforms—for demonstrating entanglement in TAM. Here

we unravel the morphing of quantum states of heralded single photons as they couple into and out of the near-field of a nanophotonic system. Through quantum state tomography

we discover that the TAM state of the near-field transforms to a free-space entangled state within a larger Hilbert space of SAM and OAM. Furthermore

we show that this entangled single photon state is in fact a quantum optical Stokes skyrmion with a topological invariant of

$$$\pm 2$$$

. The concepts described here bring new ideas and methodologies in developing high-dimensional quantum circuitry on a chip.

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Keywords

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