One photon-per-bit receiver using near-noiseless phase-sensitive amplification

Ravikiran Kakarla; Jochen Schröder; Peter A. Andrekson

doi:10.1038/s41377-020-00389-2

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One photon-per-bit receiver using near-noiseless phase-sensitive amplification

Original Articles

- One photon-per-bit receiver using near-noiseless phase-sensitive amplification
- Light: Science & Applications Vol. 9, Issue 5, Pages: 1482-1488(2020)
- Affiliations：
  
  Photonics Laboratory, Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, 412-96 Gothenburg, Sweden
- Author bio：
  
  Peter A. Andrekson (peter.andrekson@chalmers.se)
- Funds：
- DOI：10.1038/s41377-020-00389-2
  CLC：
- Published：2020，
  
  Published Online：02 September 2020，
  
  Received：23 April 2020，
  
  Revised：15 July 2020，
  
  Accepted：17 August 2020
- Accepted：
Scan QR Code
Kakarla, R., Schröder, J. & Andrekson, P. A. One photon-per-bit receiver using near-noiseless phase-sensitive amplification. Light: Science & Applications, 9, 1482-1488 (2020).
DOI：

Kakarla, R., Schröder, J. & Andrekson, P. A. One photon-per-bit receiver using near-noiseless phase-sensitive amplification. Light: Science & Applications, 9, 1482-1488 (2020). DOI： 10.1038/s41377-020-00389-2.

摘要

Abstract

Space communication for deep-space missions

inter-satellite data transfer and Earth monitoring requires high-speed data connectivity. The reach is fundamentally dictated by the available transmission power

the aperture size

and the receiver sensitivity. A transition from radio-frequency links to optical links is now seriously being considered

as this greatly reduces the channel loss caused by diffraction. A widely studied approach uses power-efficient formats along with nanowire-based photon-counting receivers cooled to a few Kelvins operating at speeds below 1 Gb/s. However

to achieve the multi-Gb/s data rates that will be required in the future

systems relying on pre-amplified receivers together with advanced signal generation and processing techniques from fibre communications are also considered. The sensitivity of such systems is largely determined by the noise figure (NF) of the pre-amplifier

which is theoretically 3 dB for almost all amplifiers. Phase-sensitive optical amplifiers (PSAs) with their uniquely low NF of 0 dB promise to provide the best possible sensitivity for Gb/s-rate long-haul free-space links. Here

we demonstrate a novel approach using a PSA-based receiver in a free-space transmission experiment with an unprecedented bit-error-free

black-box sensitivity of 1 photon-per-information-bit (PPB) at an information rate of 10.5 Gb/s. The system adopts a simple modulation format (quadrature-phase-shift keying

QPSK)

standard digital signal processing for signal recovery and forward-error correction and is straightforwardly scalable to higher data rates.

关键词

Keywords

references

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