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Quantum instrument

In quantum physics, a quantum instrument is a mathematical description of a quantum measurement, capturing both the classical and quantum outputs. It can be equivalently understood as a quantum channel that takes as input a quantum system and has as its output two systems: a classical system containing the outcome of the measurement and a quantum system…

Measurement, Reductions and inductions & Definition

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Definition

Reductions and inductions

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Map overview Semantic statistics

Quantum instrument

Nodes15
Edges14
Triples20
Avg. degree1.87
Density0.133333
Components1

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Quantum instrument

Top relations

measured by · 7
Quantum instrument → Any, Furthermore, Let, Pi, SA, Then, Tr
related to Reductions and inductions · 6
Quantum instrument → Church, CPTP, In John Smolin's, Just, Larger Hilbert, POVMs
related to Reduction to CPTP map · 3
Quantum instrument → Any, CPTP, This
related to Reduction to POVM · 3
Quantum instrument → Any, Kraus, POVM
is a · 1
Quantum instrument → mathematical description of a quantum measurement

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Important terminology

measurement quantum displaystyle mathcal instrument outcome state classical rho system projective tr conditional unitary reduction povm positive maps channel input

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Quantum instrumentis amathematical description of a quantum measurement0.90text
Quantum instrumentmeasured byAny0.60section
Quantum instrumentmeasured byLet0.60section
Quantum instrumentmeasured byTr0.60section
Quantum instrumentmeasured byPi0.60section
Quantum instrumentmeasured bySA0.60section
Quantum instrumentmeasured byThen0.60section
Quantum instrumentmeasured byFurthermore0.60section
Quantum instrumentrelated to Reduction to CPTP mapAny0.60section
Quantum instrumentrelated to Reduction to CPTP mapCPTP0.60section
Quantum instrumentrelated to Reduction to CPTP mapThis0.60section
Quantum instrumentrelated to Reduction to POVMAny0.60section

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