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Reset

Reset gate tile from the Operations catalog

Reset forces a qubit back to \( |0\rangle \), no matter what state it was in - shown in the catalog with the \( |0\rangle \) ket notation.
Qubits 1
Parameters None
Reversible? No
Also called Reset to

What it does

Reset discards whatever state a qubit is in - including superposition or entanglement - and reinitializes it to \( |0\rangle \). It's a shortcut for "measure, then flip back to 0 if the result was 1," which is exactly how it's implemented on real hardware.

Example

Reset is useful for reusing a qubit partway through a circuit - for example, after its role in an intermediate step is finished and you want to use it again from a clean \( |0\rangle \) state.

Other notations

Naming conventions across ecosystems; exact syntax can vary by library version, and this does not claim to be Qompile's generated output unless otherwise noted.

Language Typical form
OpenQASM 2.0 reset q[0];
Qiskit circuit.reset[q[0]]
Cirq cirq.reset(q[0])
Q# Reset(q[0]);