Abstract

The counterintuitive nature of quantum physics leads to a number of paradoxes. One of them is a “quantum vampire” effect [Fedorov et al., Optica 2, 112 (2015) [CrossRef]  ], which means that the photon annihilation in a part of a large beam does not change the shape of the beam profile (i.e., does not cast a shadow), but it may change the total beam intensity. Previously, this effect was demonstrated just in a simplified double-mode regime [Fedorov et al., Optica 2, 112 (2015), [CrossRef]   Katamadze et al., Optica 5, 723 (2018) [CrossRef]  ]. In this Letter, a direct test of shadow absence after the photon annihilation was performed using the thermal state of light at the input.

© 2019 Optical Society of America

How quantum is the “quantum vampire” effect?: testing with thermal light

K. G. Katamadze, G. V. Avosopiants, Yu. I. Bogdanov, and S. P. Kulik
Optica 5(6) 723-726 (2018)

Quantum vampire: collapse-free action at a distance by the photon annihilation operator

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