Demonstrating a driven reset protocol for a superconducting qubit

Qubit reset is crucial at the start of and during quantum information algorithms. We present the experimental demonstration of a practical method to force qubits into their ground state, based on driving appropriate qubit and cavity transitions. Our protocol, called the double drive reset of populat...

Full description

Saved in:
Bibliographic Details
Published inPhysical review letters Vol. 110; no. 12; p. 120501
Main Authors Geerlings, K, Leghtas, Z, Pop, I M, Shankar, S, Frunzio, L, Schoelkopf, R J, Mirrahimi, M, Devoret, M H
Format Journal Article
LanguageEnglish
Published United States 22.03.2013
Online AccessGet more information

Cover

More Information
Summary:Qubit reset is crucial at the start of and during quantum information algorithms. We present the experimental demonstration of a practical method to force qubits into their ground state, based on driving appropriate qubit and cavity transitions. Our protocol, called the double drive reset of population, is tested on a superconducting transmon qubit in a three-dimensional cavity. Using a new method for measuring population, we show that we can prepare the ground state with a fidelity of at least 99.5% in less than 3 μs; faster times and higher fidelity are predicted upon parameter optimization.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.110.120501