One photon-per-bit receiver using near-noiseless phase-sensitive amplification
Abstract
Noise fundamentally limits the capacity and reach in all communication links. In optical space communications, noise primarily originates from the detection process and limits the signal fidelity. . Therefore, the receiver sensitivity plays a key role, dictating the minimum power needed to recover the information transmitted. The widely explored approach of using the pulse-position modulation format trades-off sensitivity against receiver bandwidth and thus data-rate. Here we report on a novel, spectrally efficient, approach based on a coherent receiver with a near-noiseless phase-sensitive pre-amplifier operating at room temperature and demonstrate a sensitivity of one photon-per-bit of incident power at a data rate of 10 Gb/s. The results provide a path to future high-capacity inter-satellite and deep space, and other free-space communication links
Keywords
Cite
@article{arxiv.2004.10080,
title = {One photon-per-bit receiver using near-noiseless phase-sensitive amplification},
author = {Ravikiran Kakarla and Jochen Schröder and Peter A. Andrekson},
journal= {arXiv preprint arXiv:2004.10080},
year = {2020}
}
Comments
12 pages, 3 figures