Yuan, Z. L., Fröhlich, B., Lucamarini, M. orcid.org/0000-0002-7351-4622 et al. (3 more authors) (2016) Directly phase-modulated light source. Physical Review X. 031044. ISSN 2160-3308
Abstract
The art of imparting information onto a light wave by optical signal modulation is fundamental to all forms of optical communication. Among many schemes, direct modulation of laser diodes stands out as a simple, robust, and cost-effective method. However, the simultaneous changes in intensity, frequency, and phase have prevented its application in the field of secure quantum communication. Here, we propose and experimentally demonstrate a directly phase-modulated light source which overcomes the main disadvantages associated with direct modulation and is suitable for diverse applications such as coherent communications and quantum cryptography. The source separates the tasks of phase preparation and pulse generation between a pair of semiconductor lasers leading to very pure phase states. Moreover, the cavity-enhanced electro-optic effect enables the first example of subvolt half-wave phase modulation at high signal rates. The source is compact, stable, and versatile, and we show its potential to become the standard transmitter for future quantum communication networks based on attenuated laser pulses.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | Optics,Photonics,Quantum Information |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 27 Oct 2020 12:00 |
Last Modified: | 16 Oct 2024 17:02 |
Published Version: | https://doi.org/10.1103/PhysRevX.6.031044 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevX.6.031044 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:167276 |