Detuned mechanical parametric amplification as a quantum non-demolition measurement
Recently it has been demonstrated that the combination of continuous position detection with detuned parametric driving can lead to significant steady-state mechanical squeezing, far beyond the 3 dB limit normally associated with parametric driving. In this work, we show the close connection between...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/16/4/043023 |
| _version_ | 1797751445920940032 |
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| author | A Szorkovszky A A Clerk A C Doherty W P Bowen |
| author_facet | A Szorkovszky A A Clerk A C Doherty W P Bowen |
| author_sort | A Szorkovszky |
| collection | DOAJ |
| description | Recently it has been demonstrated that the combination of continuous position detection with detuned parametric driving can lead to significant steady-state mechanical squeezing, far beyond the 3 dB limit normally associated with parametric driving. In this work, we show the close connection between this detuned scheme and quantum non-demolition (QND) measurement of a single mechanical quadrature. In particular, we show that applying an experimentally realistic detuned parametric drive to a cavity optomechanical system allows one to effectively realize a QND measurement despite being in the bad-cavity limit. In the limit of strong squeezing, we show that this scheme offers significant advantages over standard backaction evasion, not only by allowing operation in the weak measurement and low efficiency regimes, but also in terms of the purity of the mechanical state. |
| first_indexed | 2024-03-12T16:48:40Z |
| format | Article |
| id | doaj.art-7b5cb877b8464fa6bb7fa62c1be3955a |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:48:40Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-7b5cb877b8464fa6bb7fa62c1be3955a2023-08-08T11:26:35ZengIOP PublishingNew Journal of Physics1367-26302014-01-0116404302310.1088/1367-2630/16/4/043023Detuned mechanical parametric amplification as a quantum non-demolition measurementA Szorkovszky0A A Clerk1A C Doherty2W P Bowen3Centre for Engineered Quantum Systems, University of Queensland , St Lucia, AustraliaDepartment of Physics, McGill University , Montréal, CanadaCentre for Engineered Quantum Systems, University of Sydney , Sydney, AustraliaCentre for Engineered Quantum Systems, University of Queensland , St Lucia, AustraliaRecently it has been demonstrated that the combination of continuous position detection with detuned parametric driving can lead to significant steady-state mechanical squeezing, far beyond the 3 dB limit normally associated with parametric driving. In this work, we show the close connection between this detuned scheme and quantum non-demolition (QND) measurement of a single mechanical quadrature. In particular, we show that applying an experimentally realistic detuned parametric drive to a cavity optomechanical system allows one to effectively realize a QND measurement despite being in the bad-cavity limit. In the limit of strong squeezing, we show that this scheme offers significant advantages over standard backaction evasion, not only by allowing operation in the weak measurement and low efficiency regimes, but also in terms of the purity of the mechanical state.https://doi.org/10.1088/1367-2630/16/4/043023quantum measurementoptomechanicsMEMS |
| spellingShingle | A Szorkovszky A A Clerk A C Doherty W P Bowen Detuned mechanical parametric amplification as a quantum non-demolition measurement New Journal of Physics quantum measurement optomechanics MEMS |
| title | Detuned mechanical parametric amplification as a quantum non-demolition measurement |
| title_full | Detuned mechanical parametric amplification as a quantum non-demolition measurement |
| title_fullStr | Detuned mechanical parametric amplification as a quantum non-demolition measurement |
| title_full_unstemmed | Detuned mechanical parametric amplification as a quantum non-demolition measurement |
| title_short | Detuned mechanical parametric amplification as a quantum non-demolition measurement |
| title_sort | detuned mechanical parametric amplification as a quantum non demolition measurement |
| topic | quantum measurement optomechanics MEMS |
| url | https://doi.org/10.1088/1367-2630/16/4/043023 |
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