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Quantum Limits on Measurement and Control of a Mechanical Oscillator by Vivishek Sudhir (auth.) is a nonfiction available to read on EtoBox.

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Annotation 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

Who reads Quantum Limits on Measurement and Control of a Mechanical Oscillator?

Author

Vivishek Sudhir (auth.)

Publisher

Springer International Publishing : Imprint : Springer

Published

2018

Language

EN

ISBN

9783319694313

Category

nonfiction

Subjects

Science, Computer Science, Physics