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Springer, The European Physical Journal D, 1(44), p. 167-173, 2007

DOI: 10.1140/epjd/e2007-00164-y

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Random Delayed-Choice Quantum Eraser via Two-Photon Imaging

Journal article published in 2005 by G. Scarcelli ORCID, Y. Zhou, Y. Shih
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We report on a delayed-choice quantum eraser experiment based on a two-photon imaging scheme using entangled photon pairs. After the detection of a photon which passed through a double-slit, a random delayed choice is made to erase or not erase the which-path information by the measurement of its distant entangled twin; the particle-like and wave-like behavior of the photon are then recorded simultaneously and respectively by one set of joint detection devices. Unlike all previous experiments the present work takes advantage of two-photon imaging. The complete which-path information of a photon is transferred to its distant entangled twin through a "ghost" image. The choice is made on the Fourier transform plane of the ghost image between reading "complete information" or "partial information" of the double-path.