# Demolition measurement protocol for transmon qubits

**Authors:** Ashutosh Mishra, Frank K. Wilhelm, Shai Machnes  
**arXiv:** [2502.18322](https://arxiv.org/abs/2502.18322)  
**Date:** 2025-02-25  
**Summary page:** https://www.summarizepaper.com/fr/arxiv-id/2502.18322v1/

## Abstract

The process of measuring a qubit and re-initializing it to the ground state practically lead to long qubit idle times between re-runs of experiments on a superconducting quantum computer. Here, we propose a protocol for a demolition measurement of a transmon qubit that integrates qubit readout with the reset process to minimize qubit idle time. We present a three-staged implementation of this protocol, involving a combined qubit readout and resonator reset scheme that unconditionally resets the resonator at the end of the readout; a leakage removal scheme that can be integrated with the measurement stage; and an unconditional qubit reset. We demonstrate that this protocol could be implemented in $1 μ$s with greater than $95 \%$ reset fidelity and a $99 \%$ readout fidelity without any hardware overhead beyond those commonly used. This provides at least a tenfold speed-up compared to the passive decay of the qubit, hence significantly increasing the data-acquisition rate.