qiskit.quantum_info.Statevector.from_label¶
- classmethod Statevector.from_label(label)[ソース]¶
Return a tensor product of Pauli X,Y,Z eigenstates.
Table 12 Single-qubit state labels¶ Label
Statevector
"0"\([1, 0]\)
"1"\([0, 1]\)
"+"\([1 / \sqrt{2}, 1 / \sqrt{2}]\)
"-"\([1 / \sqrt{2}, -1 / \sqrt{2}]\)
"r"\([1 / \sqrt{2}, i / \sqrt{2}]\)
"l"\([1 / \sqrt{2}, -i / \sqrt{2}]\)
- パラメータ
label (string) – a eigenstate string ket label (see table for allowed values).
- 戻り値
The N-qubit basis state density matrix.
- 戻り値の型
- 例外
QiskitError – if the label contains invalid characters, or the length of the label is larger than an explicitly specified num_qubits.