A complete characterization of the heralded noiseless amplification of photons
Year: 2013
Authors: Bruno N., Pini V., Martin A., Thew R.T.
Autors Affiliation: Univ Geneva, Appl Phys Grp, CH-1211 Geneva 4, Switzerland.
Abstract: Heralded noiseless amplification of photons has recently been shown to provide a means to overcome losses in complex quantum communication tasks. In particular, to overcome transmission losses that could allow for the violation of a Bell inequality free from the detection loophole, for device independent quantum key distribution (DI-QKD). Several implementations of a heralded photon amplifier have been proposed and the first proof of principle experiments realized. Here we present the first full characterization of such a device to test its functional limits and potential for DI-QKD. This device is tested at telecom wavelengths and is shown to be capable of overcoming losses corresponding to a transmission through 20 km of single mode telecom fibre. We demonstrate heralded photon amplifier with a gain >100 and a heralding probability >83%, required by DI-QKD protocols that use the Clauser-Horne-Shimony-Holt inequality. The heralded photon amplifier clearly represents a key technology for the realization of DI-QKD in the real world and over typical network distances.
Journal/Review: NEW JOURNAL OF PHYSICS
Volume: 15 Pages from: 93002-1 to: 93002-8
More Information: We thank Nicolas Sangouard and Nicolas Gisin for useful discussions. This work was supported by the Swiss project NCCR-QSIT.KeyWords: Linear AmplificationDOI: 10.1088/1367-2630/15/9/093002Citations: 17data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-20References taken from IsiWeb of Knowledge: (subscribers only)