Journal Article FZJ-2017-00018

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png
Suppressing relaxation in superconducting qubits by quasiparticle pumping

 ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;

2016
American Association for the Advancement of Science64196 Washington, DC [u.a.]

Science 354(6319), 1573 - 1577 () [10.1126/science.aah5844]

This record in other databases:      

Please use a persistent id in citations: doi:

Abstract: Dynamical error suppression techniques are commonly used to improve coherence in quantum systems. They reduce dephasing errors by applying control pulses designed to reverse erroneous coherent evolution driven by environmental noise. However, such methods cannot correct for irreversible processes such as energy relaxation. We investigate a complementary, stochastic approach to reducing errors: Instead of deterministically reversing the unwanted qubit evolution, we use control pulses to shape the noise environment dynamically. In the context of superconducting qubits, we implement a pumping sequence to reduce the number of unpaired electrons (quasiparticles) in close proximity to the device. A 70% reduction in the quasiparticle density results in a threefold enhancement in qubit relaxation times and a comparable reduction in coherence variability.

Classification:

Contributing Institute(s):
  1. Theoretische Nanoelektronik (PGI-2)
Research Program(s):
  1. 144 - Controlling Collective States (POF3-144) (POF3-144)

Appears in the scientific report 2016
Database coverage:
Medline ; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 30 ; JCR ; NCBI Molecular Biology Database ; National-Konsortium ; NationallizenzNationallizenz ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record
Click to display QR Code for this record

The record appears in these collections:
Dokumenttypen > Aufsätze > Zeitschriftenaufsätze
Institutssammlungen > PGI > PGI-2
Workflowsammlungen > Öffentliche Einträge
Publikationsdatenbank

 Datensatz erzeugt am 2017-01-03, letzte Änderung am 2021-01-29


Restricted:
Volltext herunterladen PDF Volltext herunterladen PDF (PDFA)
Dieses Dokument bewerten:

Rate this document:
1
2
3
 
(Bisher nicht rezensiert)