Optimal fast single pulse readout of qubits

TL;DR

This paper uses computer simulations to optimize single pulse readout of flux-biased phase qubits, achieving high fidelity by tuning pulse duration and potential well depth.

Contribution

It introduces a simulation-based method to optimize pulse parameters for improved qubit readout fidelity.

Findings

Fidelity of 0.94 achieved with 2ns pulses

Fidelity of 0.965 achieved with 12ns pulses

Optimal pulse parameters significantly reduce readout error

Abstract

The computer simulations of the process of single pulse readout from the flux-biased phase qubit is performed in the frame of one-dimensional Schroedinger equation. It has been demonstrated that the readout error can be minimized by choosing the optimal pulse duration and the depth of a potential well, leading to the fidelity of 0.94 for 2ns and 0.965 for 12ns sinusoidal pulses.