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010   $a3-319-69431-6
024 7 $a10.1007/978-3-319-69431-3
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035   $a(DE-He213)978-3-319-69431-3
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035   $a(PPN)221247238
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100   $a20171122d2018      u|         0
101 0 $aeng
135   $aurnn|008mamaa
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aQuantum Limits on Measurement and Control of a Mechanical Oscillator /$fby Vivishek Sudhir
205   $a1st ed. 2018.
210  1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2018.
215   $a1 online resource (XIX, 214 p. 46 illus., 43 illus. in color.) 
225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053
311   $a3-319-69430-8 
327   $aPrologue -- Foundations -- Measurement-Based Control -- Quantum Correlations -- Epilogue.
330   $aThis thesis reports on experiments in which the motion of a mechanical oscillator is measured with unprecedented precision. The position fluctuations of the oscillator?a glass nanostring?are measured with an imprecision that is sufficient to resolve its quantum  zero-point motion within its thermal decoherence time. The concomitant observation of measurement back-action, in accordance with Heisenberg?s  uncertainty principle, verifies the principles of linear quantum measurements on a macroscopic mechanical object. The record of the measurement is used to perform feedback control so as to suppress both classical thermal motion and quantum measurement back-action. These results verify some of the central and long-standing predictions of quantum measurement theory applied to a macroscopic object. The act of measurement not only perturbs the subject of the measurement?the mechanical oscillator?but also changes the state of the light used to make the measurement. This prediction is verified by demonstrating that the optical field, after having interacted with the mechanical oscillator, contains quantum correlations that render its quadrature fluctuations smaller than those of the vacuum ? i.e., the light is squeezed. Lastly, the thesis reports on some of the first feedback control experiments involving macroscopic objects in the quantum regime, together with an exploration of the quantum limit of feedback control. The book offers a pedagogical account of linear measurement theory, its realization via optical interferometry, and contains a detailed guide to precision optical interferometry. .
410  0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053
606   $aQuantum theory
606   $aQuantum optics
606   $aQuantum computers
606   $aSpintronics
606   $aQuantum Physics$3https://scigraph.springernature.com/ontologies/product-market-codes/P19080
606   $aQuantum Optics$3https://scigraph.springernature.com/ontologies/product-market-codes/P24050
606   $aQuantum Information Technology, Spintronics$3https://scigraph.springernature.com/ontologies/product-market-codes/P31070
615  0$aQuantum theory.
615  0$aQuantum optics.
615  0$aQuantum computers.
615  0$aSpintronics.
615 14$aQuantum Physics.
615 24$aQuantum Optics.
615 24$aQuantum Information Technology, Spintronics.
676   $a530.12
700   $aSudhir$b Vivishek$4aut$4http://id.loc.gov/vocabulary/relators/aut$01062928
906   $aBOOK
912   $a9910300530703321
996   $aQuantum Limits on Measurement and Control of a Mechanical Oscillator$92529259
997   $aUNINA