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Quantum Limits on Measurement and Control of a Mechanical Oscillator (Hardcover, 1st ed. 2018) Loot Price: R2,990
Discovery Miles 29 900
Quantum Limits on Measurement and Control of a Mechanical Oscillator (Hardcover, 1st ed. 2018): Vivishek Sudhir

Quantum Limits on Measurement and Control of a Mechanical Oscillator (Hardcover, 1st ed. 2018)

Vivishek Sudhir

Series: Springer Theses

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Loot Price R2,990 Discovery Miles 29 900 | Repayment Terms: R280 pm x 12*

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This thesis reports on experiments in which the motion of a mechanical oscillator is measured with unprecedented precision. The position fluctuations of the oscillator-a glass nanostring-are measured with an imprecision that is sufficient to resolve its quantum zero-point motion within its thermal decoherence time. The concomitant observation of measurement back-action, in accordance with Heisenberg's uncertainty principle, verifies the principles of linear quantum measurements on a macroscopic mechanical object. The record of the measurement is used to perform feedback control so as to suppress both classical thermal motion and quantum measurement back-action. These results verify some of the central and long-standing predictions of quantum measurement theory applied to a macroscopic object. The act of measurement not only perturbs the subject of the measurement-the mechanical oscillator-but also changes the state of the light used to make the measurement. This prediction is verified by demonstrating that the optical field, after having interacted with the mechanical oscillator, contains quantum correlations that render its quadrature fluctuations smaller than those of the vacuum - i.e., the light is squeezed. Lastly, the thesis reports on some of the first feedback control experiments involving macroscopic objects in the quantum regime, together with an exploration of the quantum limit of feedback control. The book offers a pedagogical account of linear measurement theory, its realization via optical interferometry, and contains a detailed guide to precision optical interferometry..

General

Imprint: Springer International Publishing AG
Country of origin: Switzerland
Series: Springer Theses
Release date: December 2017
First published: 2018
Authors: Vivishek Sudhir
Dimensions: 235 x 155mm (L x W)
Format: Hardcover
Pages: 214
Edition: 1st ed. 2018
ISBN-13: 978-3-319-69430-6
Categories: Books > Science & Mathematics > Physics > Classical mechanics > Sound, vibration & waves (acoustics)
Books > Science & Mathematics > Physics > Quantum physics (quantum mechanics) > General
LSN: 3-319-69430-8
Barcode: 9783319694306

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