Decoherence and Quantum Measurement: The Missing Lecture

This is an elementary lecture for students which discusses quantum measurement from the modern perspective of decoherence.

Decoherence and Quantum Measurement: The Missing Lecture 

arXiv:2212.02391 [quant-ph]  

We give an elementary account of quantum measurement and related topics from the modern perspective of decoherence. The discussion should be comprehensible to students who have completed a basic course in quantum mechanics with exposure to concepts such as Hilbert space, density matrices, and von Neumann projection (``wavefunction collapse'').

See also: 

Ten Years of Quantum Coherence and Decoherence 

Macroscopic Superposition States in Isolated Quantum Systems 

Macroscopic Superpositions in Isolated Systems (talk video + slides)