Input–output Gaussian channels: theory and application
Setting off from the classic input–output formalism, we develop a theoretical framework to characterize the Gaussian quantum channels relating the initial correlations of an open bosonic system to those of properly identified output modes. We then proceed to apply our formalism to the case of quantu...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2012-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/14/9/093046 |
| _version_ | 1797751802929610752 |
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| author | Tommaso Tufarelli Alex Retzker Martin B Plenio Alessio Serafini |
| author_facet | Tommaso Tufarelli Alex Retzker Martin B Plenio Alessio Serafini |
| author_sort | Tommaso Tufarelli |
| collection | DOAJ |
| description | Setting off from the classic input–output formalism, we develop a theoretical framework to characterize the Gaussian quantum channels relating the initial correlations of an open bosonic system to those of properly identified output modes. We then proceed to apply our formalism to the case of quantum harmonic oscillators, such as the motional degrees of freedom of trapped ions or nanomechanical oscillators, interacting with travelling electromagnetic modes through cavity fields and subject to external white noise. We thus determine the degree of squeezing that can be transferred from an intra-cavity oscillator to light and show that the intra-cavity squeezing can be transformed into distributed optical entanglement if one can access both output fields of a two-sided cavity. |
| first_indexed | 2024-03-12T16:53:51Z |
| format | Article |
| id | doaj.art-aa33a683f13b46cda93f7836a64618b8 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:53:51Z |
| publishDate | 2012-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-aa33a683f13b46cda93f7836a64618b82023-08-08T11:02:35ZengIOP PublishingNew Journal of Physics1367-26302012-01-0114909304610.1088/1367-2630/14/9/093046Input–output Gaussian channels: theory and applicationTommaso Tufarelli0Alex Retzker1Martin B Plenio2Alessio Serafini3QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, UK; Department of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT, UKInstitut für Theoretische Physik, Albert-Einstein Allee 11, Universität Ulm , 89069 Ulm, Germany; Racah Institute of Physics, The Hebrew University of Jerusalem , Jerusalem 91904, IsraelInstitut für Theoretische Physik, Albert-Einstein Allee 11, Universität Ulm , 89069 Ulm, GermanyDepartment of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT, UKSetting off from the classic input–output formalism, we develop a theoretical framework to characterize the Gaussian quantum channels relating the initial correlations of an open bosonic system to those of properly identified output modes. We then proceed to apply our formalism to the case of quantum harmonic oscillators, such as the motional degrees of freedom of trapped ions or nanomechanical oscillators, interacting with travelling electromagnetic modes through cavity fields and subject to external white noise. We thus determine the degree of squeezing that can be transferred from an intra-cavity oscillator to light and show that the intra-cavity squeezing can be transformed into distributed optical entanglement if one can access both output fields of a two-sided cavity.https://doi.org/10.1088/1367-2630/14/9/093046 |
| spellingShingle | Tommaso Tufarelli Alex Retzker Martin B Plenio Alessio Serafini Input–output Gaussian channels: theory and application New Journal of Physics |
| title | Input–output Gaussian channels: theory and application |
| title_full | Input–output Gaussian channels: theory and application |
| title_fullStr | Input–output Gaussian channels: theory and application |
| title_full_unstemmed | Input–output Gaussian channels: theory and application |
| title_short | Input–output Gaussian channels: theory and application |
| title_sort | input output gaussian channels theory and application |
| url | https://doi.org/10.1088/1367-2630/14/9/093046 |
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