What is it about?
We present a new quantum imaging technique which enables rapid measurement of the quantum entanglement, from which Bell test is evaluated immediately. Compared to typical polarization correlation measurement between two entangled photons using two single-photon detectors, which takes several hours, our approach visualizes in minutes full quantum correlation in four images using photon camera. We demonstrate our quantum imaging technique.
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Why is it important?
This method puts a critical step forward in quantum entanglement measurement for Bell test, visualization of photonic polarization entanglement, high-dimensional measurement of photon-matter interaction, and fast monitoring of quantum systems based on polarization-entangled photons.
Perspectives
This manuscript will have a long-lasting impact to the quantum entanglement metrology, specifically for Bell’s inequality measurement based on quantum imaging, for applications in quantum communications, quantum computing, and quantum sensing
Martin Sohn
National Institute of Standards and Technology
Read the Original
This page is a summary of: Radial polarization imaging of entangled biphoton state, APL Photonics, June 2025, American Institute of Physics,
DOI: 10.1063/5.0260101.
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