Purification of single-photon entanglement with linear optics
Nicolas Sangouard, Christoph Simon, Thomas Coudreau, and Nicolas Gisin
TL;DR
This paper presents a linear-optics protocol for purifying single-photon entangled states, enhancing their quality for quantum communication, and demonstrating feasibility with current technology.
Contribution
It introduces a simple, feasible linear-optics method for purifying single-photon entanglement, advancing quantum repeater applications.
Findings
Purification protocol is feasible with current technology.
The method improves entanglement quality.
Applicable to quantum repeater protocols.
Abstract
We show that single-photon entangled states of the form |0>|1>+|1>|0> can be purified with a simple linear-optics based protocol, which is eminently feasible with current technology. Besides its conceptual interest, this result is relevant for attractive quantum repeater protocols.
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