Quantum imaging exploiting twisted photon pairs

TL;DR

This paper introduces a quantum imaging method using twisted photon pairs with tunable spatial correlations, enhancing imaging capabilities and immunity to background noise, potentially advancing quantum holography and microscopy.

Contribution

The study presents a novel quantum imaging scheme exploiting twisted photon pairs with adjustable spatial correlation regions, overcoming coherence area limitations.

Findings

Enhanced imaging signal via bulk-density coincidence

Re-scaled image signal immune to background intensity

Identification of destructive interference in photon pair interactions

Abstract

Quantum correlation of two-photon states has been utilized to suppress the environmental noise in imaging down to the single-photon level. However, the size of the coherence area of photon pairs limits the applications of quantum imaging based on spatial correlations. Here, we propose a quantum imaging scheme exploiting twisted photon pairs with tunable spatial-correlation regions to circumvent this limitation. We employ a bulk-density coincidence to enhance the imaging signal. Specifically, we introduce a re-scaled image signal, which is immune to the background intensity distribution profile of the photon pulse. We reveal a destructive interference between the anti-bunched photon pair and bunched photon pair in the imaging process. Our work could pave a way for twisted-photon-based quantum holography and quantum microscopy.