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collective bloch vector

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D - Qubits
Claude Fabre, Sorbonne Université, Paris
With contributions by Rodrigo G. Cortiñas
Book:

Quantum Processes and Measurement

Published online:

27 July 2023

Print publication:

10 August 2023, pp 222-226
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Summary

Appendix D: two-level quantum mechanical systems, or qubits. Description in terms of Bloch vector. Poincaré sphere. Expression of purity. Projection noise in an energy measurement. Description of a set of N coherently driven qubits by a collective Bloch vector.