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CheckZero operation

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Fully qualified name: Std.Diagnostics.CheckZero

operation CheckZero(qubit : Qubit) : Bool

Summary

Checks whether a qubit is in the $|0⟩$ state, returning true if it is.

Description

This operation checks whether a qubit is in the $|0⟩$ state. It will return true only if the qubit is deterministically in the $|0⟩$ state, and will return false otherwise. This operation does not change the state of the qubit.

Input

qubit

The qubit to check.

Output

True if the qubit is 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.