Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel

We transmitted O-band heralded photons over 10 km of optical fiber in a proof-of-concept experiment demonstrating the feasibility of using heralded photons to improve the noise tolerance of quantum key distribution. In our experiment, the optical fiber channel was corrupted by noise photons to the e...

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Main Authors: Liu, Mao Tong., Lim, Han Chuen.
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/100951
http://hdl.handle.net/10220/18596
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1009512020-03-07T14:00:32Z Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel Liu, Mao Tong. Lim, Han Chuen. School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics We transmitted O-band heralded photons over 10 km of optical fiber in a proof-of-concept experiment demonstrating the feasibility of using heralded photons to improve the noise tolerance of quantum key distribution. In our experiment, the optical fiber channel was corrupted by noise photons to the extent that if we had used an attenuated laser as the photon source, a photon signal-to-noise ratio of < 4.0 at the receiver, corresponding to a quantum bit-error rate of > 10.0%, would have prevented the effective generation of secure keys. Using a photon heralding scheme, the photon signal-to-noise ratio in our experiment was shown to be > 7.8. This corresponds to a quantum bit-error rate of < 5.7%, which is good enough for distilling secure keys. In addition, we showed that it is possible to incorporate wavelength-division-multiplexing into the photon heralding scheme to improve overall key rate. We discussed and clarified the prospects and limitations of the photon heralding scheme for noise-tolerant quantum key distribution. Published version 2014-01-15T06:53:37Z 2019-12-06T20:31:23Z 2014-01-15T06:53:37Z 2019-12-06T20:31:23Z 2013 2013 Journal Article Liu, M. T., & Lim, H. C. (2013). Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel. Optics Express, 21(25), 30358-30369. 1094-4087 https://hdl.handle.net/10356/100951 http://hdl.handle.net/10220/18596 10.1364/OE.21.030358 en Optics express © 2013 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: [http://dx.doi.org/10.1364/OE.21.030358].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Liu, Mao Tong.
Lim, Han Chuen.
Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel
description We transmitted O-band heralded photons over 10 km of optical fiber in a proof-of-concept experiment demonstrating the feasibility of using heralded photons to improve the noise tolerance of quantum key distribution. In our experiment, the optical fiber channel was corrupted by noise photons to the extent that if we had used an attenuated laser as the photon source, a photon signal-to-noise ratio of < 4.0 at the receiver, corresponding to a quantum bit-error rate of > 10.0%, would have prevented the effective generation of secure keys. Using a photon heralding scheme, the photon signal-to-noise ratio in our experiment was shown to be > 7.8. This corresponds to a quantum bit-error rate of < 5.7%, which is good enough for distilling secure keys. In addition, we showed that it is possible to incorporate wavelength-division-multiplexing into the photon heralding scheme to improve overall key rate. We discussed and clarified the prospects and limitations of the photon heralding scheme for noise-tolerant quantum key distribution.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Liu, Mao Tong.
Lim, Han Chuen.
format Article
author Liu, Mao Tong.
Lim, Han Chuen.
author_sort Liu, Mao Tong.
title Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel
title_short Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel
title_full Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel
title_fullStr Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel
title_full_unstemmed Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel
title_sort transmission of o-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel
publishDate 2014
url https://hdl.handle.net/10356/100951
http://hdl.handle.net/10220/18596
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