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Quantum Optics and Nanophotonics$
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Claude Fabre, Vahid Sandoghdar, Nicolas Treps, and Leticia F. Cugliandolo

Print publication date: 2017

Print ISBN-13: 9780198768609

Published to Oxford Scholarship Online: August 2017

DOI: 10.1093/oso/9780198768609.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 28 September 2021

Quantum measurements: a modern view for quantum optics experimentalists

Quantum measurements: a modern view for quantum optics experimentalists

(p.315) 7 Quantum measurements: a modern view for quantum optics experimentalists
Quantum Optics and Nanophotonics

Aephraim M. Steinberg

Oxford University Press

This chapter introduces the theory and practice of various approaches to measuring quantum systems, focusing on quantum-optical settings, including monitored spontaneous emission, the quantum eraser, and unambiguous state discrimination. Beginning with a review of classical probability and update rules, it explains the motivation for the consideration of density matrices and generalized quantum measurements, treats the connection with decoherence, and goes on to introduce and discuss retrodiction, including ‘interaction-free measurement’, Hardy’s paradox, and ‘weak measurement’.

Keywords:   quantum measurement, POVM, weak measurement, complementarity, density matrix, generalized quantum measurement, quantum optics, unambiguous state discrimination, quantum eraser, Hardy’s paradox

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