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qiskit.quantum_info.partial_trace

partial_trace(state, qargs)[fuente]

Return reduced density matrix by tracing out part of quantum state.

If all subsystems are traced over this returns the trace() of the input state.

Parámetros
Devuelve

The reduced density matrix.

Tipo del valor devuelto

DensityMatrix

Muestra

QiskitError – if input state is invalid.