Overcoming phonon-induced dephasing for indistinguishable photon sources
Reliable single photon sources constitute the basis of schemes for quantum communication and measurement based quantum computing. Solid state single photon sources based on quantum dots are convenient and versatile but the electronic transitions that generate the photons are subject to interactions...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2012-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/14/11/113004 |
| _version_ | 1797751686154944512 |
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| author | Tom Close Erik M Gauger Brendon W Lovett |
| author_facet | Tom Close Erik M Gauger Brendon W Lovett |
| author_sort | Tom Close |
| collection | DOAJ |
| description | Reliable single photon sources constitute the basis of schemes for quantum communication and measurement based quantum computing. Solid state single photon sources based on quantum dots are convenient and versatile but the electronic transitions that generate the photons are subject to interactions with lattice vibrations. Using a microscopic model of electron–phonon interactions and a quantum master equation, we here examine phonon-induced decoherence and assess its impact on the rate of production, and indistinguishability, of single photons emitted from an optically driven quantum dot system. We find that, above a certain threshold of desired indistinguishability, it is possible to mitigate the deleterious effects of phonons by exploiting a three-level Raman process for photon production. |
| first_indexed | 2024-03-12T16:52:11Z |
| format | Article |
| id | doaj.art-fd068a3bdb8f4b639698195610727f3f |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:52:11Z |
| publishDate | 2012-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-fd068a3bdb8f4b639698195610727f3f2023-08-08T11:08:30ZengIOP PublishingNew Journal of Physics1367-26302012-01-01141111300410.1088/1367-2630/14/11/113004Overcoming phonon-induced dephasing for indistinguishable photon sourcesTom Close0Erik M Gauger1Brendon W Lovett2Department of Materials, Oxford University , Oxford OX1 3PH, UKDepartment of Materials, Oxford University , Oxford OX1 3PH, UK; Centre for Quantum Technologies, National University of Singapore , 3 Science Drive 2, Singapore 117543, SingaporeDepartment of Materials, Oxford University , Oxford OX1 3PH, UK; SUPA, School of Engineering and Physical Sciences, Heriot Watt University , Edinburgh EH14 4AS, UKReliable single photon sources constitute the basis of schemes for quantum communication and measurement based quantum computing. Solid state single photon sources based on quantum dots are convenient and versatile but the electronic transitions that generate the photons are subject to interactions with lattice vibrations. Using a microscopic model of electron–phonon interactions and a quantum master equation, we here examine phonon-induced decoherence and assess its impact on the rate of production, and indistinguishability, of single photons emitted from an optically driven quantum dot system. We find that, above a certain threshold of desired indistinguishability, it is possible to mitigate the deleterious effects of phonons by exploiting a three-level Raman process for photon production.https://doi.org/10.1088/1367-2630/14/11/113004 |
| spellingShingle | Tom Close Erik M Gauger Brendon W Lovett Overcoming phonon-induced dephasing for indistinguishable photon sources New Journal of Physics |
| title | Overcoming phonon-induced dephasing for indistinguishable photon sources |
| title_full | Overcoming phonon-induced dephasing for indistinguishable photon sources |
| title_fullStr | Overcoming phonon-induced dephasing for indistinguishable photon sources |
| title_full_unstemmed | Overcoming phonon-induced dephasing for indistinguishable photon sources |
| title_short | Overcoming phonon-induced dephasing for indistinguishable photon sources |
| title_sort | overcoming phonon induced dephasing for indistinguishable photon sources |
| url | https://doi.org/10.1088/1367-2630/14/11/113004 |
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