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CheckAllZero operation

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Fully qualified name: Std.Diagnostics.CheckAllZero

operation CheckAllZero(qubits : Qubit[]) : Bool

Summary

Checks whether all qubits in the provided array are in the $|0⟩$ state. Returns true if they are.

Description

This operation checks whether all qubits in the provided array are in the $|0⟩$ state. It will return true only if all qubits are deterministically in the $|0⟩$ state, and will return false otherwise. This operation does not change the state of the qubits.

Input

qubits

The qubits to check.

Output

True if all qubits are in the $|0⟩$ state, false otherwise.

Remarks

This operation is useful for checking whether a qubit is in the $|0⟩$ state during simulation. It is not possible to check this on hardware without measuring the qubit, which could change the state.