Experimental demonstration of quantum illumination using
polarization-entangled photon pairs and CHSH value as measure
- URL: http://arxiv.org/abs/2401.10182v1
- Date: Thu, 18 Jan 2024 18:10:48 GMT
- Title: Experimental demonstration of quantum illumination using
polarization-entangled photon pairs and CHSH value as measure
- Authors: Kanad Sengupta, K. Muhammed Shafi, Soumya Asokan, C. M. Chandrashekar
- Abstract summary: Entangled light sources for illuminating objects offer advantages over conventional illumination methods.
We experimentally demonstrate the advantages of using polarization-entangled photon pairs for quantum illumination.
- Score: 2.501693072047969
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Entangled light sources for illuminating objects offers advantages over
conventional illumination methods by enhancing the detection sensitivity of a
reflecting object. The crux of the quantum advantage lies in way we can
practically leverage quantum correlations to isolate the background noise and
detect the low reflectivity object. In this work we experimentally demonstrated
the advantages of using polarization-entangled photon pairs for quantum
illumination and show that the quantum correlation measure using CHSH value is
robust against background noise and losses. We also show that the residual of
quantum correlations help in identifying the object of reflectivity, $\eta$ as
low as 0.05 and when signal-to-noise ratio is as low as 0.003 for $\eta=0.7$,
surpassing the earlier demonstrated results. Robustness of correlation measure
with photon attenuation in atmospheric condition is analysed to show the
practical feasibility of the real time application.
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