Chromium(III)-based potential molecular quantum bits with long coherence times

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Samuel Lenz
  • Heiko Bamberger
  • Philipp P Hallmen
  • Yannick Thiebes
  • Sven Otto
  • Katja Heinze
  • Joris van Slageren
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000464323400017&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1039/c9cp00745h
eISSN
1463-9084
Externe Identifier
  • Clarivate Analytics Document Solution ID: HT1KT
  • PubMed Identifier: 30869710
ISSN
1463-9076
Ausgabe der Veröffentlichung
13
Zeitschrift
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Paginierung
6976 - 6983
Datum der Veröffentlichung
2019
Status
Published
Titel
Chromium(III)-based potential molecular quantum bits with long coherence times
Sub types
  • Article
Ausgabe der Zeitschrift
21

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<p>[Cr(ddpd)<sub>2</sub>]<sup>3+</sup> displays record phase memory times of up to 8.4 μs at 7 K. This is likely enabled by the very small zero-field splitting of <italic>D</italic> = 0.18 cm<sup>−1</sup> which is due to the ligand field quartet state lying at very high energy.</p>
Autoren
  • Samuel Lenz
  • Heiko Bamberger
  • Philipp P Hallmen
  • Yannick Thiebes
  • Sven Otto
  • Katja Heinze
  • Joris van Slageren
DOI
10.1039/c9cp00745h
eISSN
1463-9084
ISSN
1463-9076
Ausgabe der Veröffentlichung
13
Zeitschrift
Physical Chemistry Chemical Physics
Sprache
en
Online publication date
2019
Paginierung
6976 - 6983
Status
Published online
Herausgeber
Royal Society of Chemistry (RSC)
Herausgeber URL
http://dx.doi.org/10.1039/c9cp00745h
Datum der Datenerfassung
2024
Titel
Chromium(<scp>iii</scp>)-based potential molecular quantum bits with long coherence times
Ausgabe der Zeitschrift
21

Datenquelle: Crossref

Abstract
Molecular quantum bits based on copper(ii) or vanadium(iv) have been shown to possess long coherence times on multiple occasions. In contrast, studies in which non-spin-½ ions are employed are relatively scarce. High-spin ions provide additional states that can be used to encode further quantum bits. Furthermore, an optical rather than a microwave readout of molecular quantum bits is highly desirable, because in principle it could allow addressing at the single quantum bit level. The chromium(iii) complex [Cr(ddpd)2]3+ (ddpd = N,N'-dimethyl-N,N'-dipyridine-2-yl-pyridine-2,6-diamine) combines both the large spin (S = 3/2) and optical activity (strong, long lived luminescence). Here we demonstrate that the compound possesses coherence times of up to 8.4(1) μs, which are much longer (at least three times) than those for other chromium(iii)-based compounds. On the other hand, it is proved to be impossible to read out or influence the quantum state by optical means, underlining that further work is needed in this direction.
Addresses
  • Institute of Physical Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany. slageren@ipc.uni-stuttgart.de.
Autoren
  • Samuel Lenz
  • Heiko Bamberger
  • Philipp P Hallmen
  • Yannick Thiebes
  • Sven Otto
  • Katja Heinze
  • Joris van Slageren
DOI
10.1039/c9cp00745h
eISSN
1463-9084
Externe Identifier
  • PubMed Identifier: 30869710
Funding acknowledgements
  • Baden-Württemberg Stiftung:
  • Carl-Zeiss-Stiftung:
  • Deutsche Forschungsgemeinschaft: HE2778/10-1
Open access
false
ISSN
1463-9076
Ausgabe der Veröffentlichung
13
Zeitschrift
Physical chemistry chemical physics : PCCP
Sprache
eng
Medium
Print
Paginierung
6976 - 6983
Datum der Veröffentlichung
2019
Status
Published
Datum der Datenerfassung
2019
Titel
Chromium(iii)-based potential molecular quantum bits with long coherence times.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
21

Datenquelle: Europe PubMed Central

Abstract
Molecular quantum bits based on copper(ii) or vanadium(iv) have been shown to possess long coherence times on multiple occasions. In contrast, studies in which non-spin-½ ions are employed are relatively scarce. High-spin ions provide additional states that can be used to encode further quantum bits. Furthermore, an optical rather than a microwave readout of molecular quantum bits is highly desirable, because in principle it could allow addressing at the single quantum bit level. The chromium(iii) complex [Cr(ddpd)2]3+ (ddpd = N,N'-dimethyl-N,N'-dipyridine-2-yl-pyridine-2,6-diamine) combines both the large spin (S = 3/2) and optical activity (strong, long lived luminescence). Here we demonstrate that the compound possesses coherence times of up to 8.4(1) μs, which are much longer (at least three times) than those for other chromium(iii)-based compounds. On the other hand, it is proved to be impossible to read out or influence the quantum state by optical means, underlining that further work is needed in this direction.
Autoren
  • Samuel Lenz
  • Heiko Bamberger
  • Philipp P Hallmen
  • Yannick Thiebes
  • Sven Otto
  • Katja Heinze
  • Joris van Slageren
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/30869710
DOI
10.1039/c9cp00745h
eISSN
1463-9084
Ausgabe der Veröffentlichung
13
Zeitschrift
Phys Chem Chem Phys
Sprache
eng
Country
England
Paginierung
6976 - 6983
Datum der Veröffentlichung
2019
Status
Published
Datum, an dem der Datensatz öffentlich gemacht wurde
2019
Titel
Chromium(iii)-based potential molecular quantum bits with long coherence times.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
21

Datenquelle: PubMed

Beziehungen:
Eigentum von

Werkzeuge