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Non-classical optimization of entangled photons through complex media

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arxiv 2503.24283 v2 pith:IFBGS52U submitted 2025-03-31 quant-ph physics.optics

classification quant-phphysics.optics
keywords optimizationcomplexnon-classicalclassicallightmediaentangledimaging
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Optimization approaches are ubiquitous in physics. In optics, they are key to manipulating light through complex media, enabling applications ranging from imaging to photonic simulators. In most demonstrations, however, the optimization process is implemented using classical coherent light, leading to a purely classical solution. Here we introduce the concept of optical non-classical optimization in complex media. We experimentally demonstrate the control and refocusing of non-classical light -- namely, entangled photon pairs -- through a scattering medium by directly optimizing the output coincidence rate. The optimal solutions found with this approach differ from those obtained using classical optimization, a result of entanglement in the input state. Beyond imaging, this genuinely non-classical optimization method has potential to tackle complex problems, as we show by simulating a spin-glass model with multi-spin interactions.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Fundamental Bounds of Wavefront Shaping of Spatially Entangled Photons

    quant-ph 2025-05 conditional novelty 7.0 of 10

    For entangled photons crossing a scattering medium, shaping one photon gives η≈(π/4)N, shaping both before the medium gives η≈(π/4)^2 N, while symmetric same-mode detection can restore correlations with η≈N, and post-...

  2. Wavefront correction of high-dimensional two-photon states via coherence-entanglement transfer

    quant-ph 2025-09 conditional novelty 6.0 of 10

    A two-photon source in a low-entanglement configuration measures the transmission matrix of a scattering medium, and the same correction then restores correlations of a high-dimensional entangled state.

  3. Rapid and efficient wavefront correction for spatially entangled photons using symmetrized optimization

    quant-ph 2025-04 conditional novelty 5.0 of 10

    sGA, a symmetry-constrained genetic algorithm that optimizes only the even-parity part of the wavefront, corrects two-photon correlations after a diffuser four times faster and up to 38% better than standard GA in one...

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