Nanomechanical state amplifier based on optical inverted pendulum

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F25%3A00637396" target="_blank" >RIV/68081731:_____/25:00637396 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/25:73631291 RIV/00216224:14310/25:00141850
Result on the web
<a href="https://www.nature.com/articles/s42005-025-02193-z" target="_blank" >https://www.nature.com/articles/s42005-025-02193-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s42005-025-02193-z" target="_blank" >10.1038/s42005-025-02193-z</a>

Result language
angličtina
Original language name
Nanomechanical state amplifier based on optical inverted pendulum
Original language description
A contactless control of mean values and fluctuations of position and velocity of a nanoobject belongs among the key methods needed for ultra-precise nanotechnology and the upcoming quantum technology of macroscopic systems. An analysis of experimental implementations of such a control, including assessments of linearity and the effects of added noise, is required. Here, we present a protocol of linear amplification of mean values and fluctuations along an arbitrary phase space variable and squeezing along the complementary one, referred to as a nanomechanical state amplifier. It utilizes the experimental platform of a single optically levitating nanoparticle and the three-step protocol combines a controlled fast switching of the parabolic trapping potential to an inverted parabolic potential and back to the parabolic potential. The protocol can be sequentially repeated or extended to shape the nanomechanical state appropriately. Experimentally, we achieve amplification of position with a gain of divided by G divided by similar or equal to 2 and a classical squeezing coefficient above 4 dB in as short a timestep as one period of nanoparticle oscillations (7.6 mu s). Amplification in velocity, with the same parameters, squeezes the input noise and enhances force sensing.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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