What does it take to detect entanglement with the human eye?

What does it take to detect entanglement with the human eye?

Caprara Vivoli, V. (TU Delft QID/Wehner Group; TU Delft QuTech Advanced Research Centre; University of Geneva)
Sekatski, Pavel (University of Innsbruck)
Sangouard, Nicolas (University of Basel)

2016

Tremendous progress has been realized in quantum optics for engineering and detecting the quantum properties of light. Today, photon pairs are routinely created in entangled states. Entanglement is revealed using single-photon detectors in which a single photon triggers an avalanche current. The resulting signal is then processed and stored in a computer. Here, we propose an approach to get rid of all the electronic devices between the photons and the experimentalist, i.e., to use the experimentalist’s eye to detect entanglement. We show in particular that the micro-entanglement that is produced by sending a single photon into a beam splitter can be detected with the eye using the magnifying glass of a displacement in phase space. The feasibility study convincingly demonstrates the possibility of realizing the first experiment where entanglement is observed with the eye.

http://resolver.tudelft.nl/uuid:0029a24a-a706-4303-a698-f4238ea29408

https://doi.org/10.1364/OPTICA.3.000473

2334-2536

Optica, 3 (5), 473-476

Institutional Repository

journal article

© 2016 V. Caprara Vivoli, Pavel Sekatski, Nicolas Sangouard