General measurements | Understanding Quantum Information & Computation | Lesson 11 скачать в хорошем качестве

General measurements | Understanding Quantum Information & Computation | Lesson 11

This is part of the Understanding Quantum Information & Computation series. Watch the full playlist here:    • Understanding Quantum Information & Comput...   Measurements provide an interface between quantum and classical information; when a system is measured, classical information about its state is extracted (and the state is generally changed in the process). This lesson describes measurements in full generality, including different ways that general measurements can be described in mathematical terms. It also describes quantum state discrimination and quantum state tomography, which are important notions connected with measurements. Find the written content for this lesson on IBM Quantum Learning: https://learning.quantum.ibm.com/cour... 0:00 — Introduction 1:19 — Overview 2:35 — Descriptions of measurements 5:02 — Measurements as matrices 10:18 — Examples 13:59 — Measurements as channels 17:24 — Partial measurements 22:06 — Naimark's theorem 23:07 — Proof of Naimark's theorem 28:07 — Non-destructive measurements 31:08 — State discrimination & tomography 33:55 — Discriminating pairs of states 38:38 — Discriminating 3 or more states 40:50 — Quantum state tomography 42:13 — Qubit tomography 45:19 — Conclusion Link to the full Understanding Quantum Information & Computation Series:    • Understanding Quantum Information & Comput...   #ibmquantum #qiskit #learnquantum