4.8 Article

Measurement of the Entanglement between Photonic Spatial Modes in Optical Fibers

Journal

PHYSICAL REVIEW LETTERS
Volume 109, Issue 2, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.020502

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Funding

  1. KRISS project Convergent Science and Technology for Measurements at the Nanoscale

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We experimentally demonstrate the entanglement of spatial modes between two photons propagating through separate few-mode optical fibers. Quantum states over the two lowest-order spatial modes are measured with highly efficient spatial-mode analyzers based on acousto-optics. Quantum state tomography verifies the entanglement of the spatial-domain Bell state.

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