Quantitative wave-particle duality and non-erasing quantum erasure
Quantum Physics
2009-10-31 v1
Abstract
The notion of wave-particle duality may be quantified by the inequality V^2+K^2 <=1, relating interference fringe visibility V and path knowledge K. With a single-photon interferometer in which polarization is used to label the paths, we have investigated the relation for various situations, including pure, mixed, and partially-mixed input states. A quantum eraser scheme has been realized that recovers interference fringes even when no which-way information is available to erase.
Keywords
Cite
@article{arxiv.quant-ph/9908072,
title = {Quantitative wave-particle duality and non-erasing quantum erasure},
author = {Peter D. D. Schwindt and Paul G. Kwiat and Berthold-Georg Englert},
journal= {arXiv preprint arXiv:quant-ph/9908072},
year = {2009}
}
Comments
6 pages, 4 figures. To appear in Phys. Rev. A