Prediction of short time qubit readout via measurement of the next quantum jump of a coupled damped driven harmonic oscillator

TL;DR

This paper analyzes the dynamics of the next quantum jump in a qubit-resonator system, revealing non-exponential short-time behavior that could enable faster qubit state detection than the resonator lifetime.

Contribution

It provides a quantum mechanical analysis of the readout resonator's short-time dynamics, highlighting potential for improved qubit measurement speed.

Findings

Identification of non-exponential short-time behavior in the resonator dynamics

Potential for faster qubit state detection than resonator lifetime

Quantum mechanical treatment of the coupled system

Abstract

The dynamics of the next quantum jump for a qubit [two level system] coupled to a readout resonator [damped driven harmonic oscillator] is calculated. A quantum mechanical treatment of readout resonator reveals non exponential short time behavior which could facilitate detection of the state of the qubit faster than the resonator lifetime.