Abstract
AbstractQuantum correlation of two‐photon states is utilized to suppress the environmental noise in imaging down to the single‐photon level. However, the size of the coherence area of the photon pairs limits the applications of quantum imaging based on spatial correlations. Here, a quantum imaging scheme exploiting twisted photon pairs with tunable spatial‐correlation regions to circumvent this limitation is proposed. A bulk‐density coincidence is employed to enhance the imaging signal. Specifically, a re‐scaled image signal is introduced, which is immune to the background intensity distribution profile of the photon pulse. A destructive interference between the anti‐bunched photon pair and bunched photon pair in the imaging process is revealed. This work can pave a way for twisted‐photon‐based quantum holography and quantum microscopy.
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