Sympathetically cooled highly charged ions in a radio-frequency trap with superconducting magnetic shielding

Dijck, Elwin A.; Warnecke, Christian; Wehrheim, Malte; Henninger, Ruben B.; Eff, Julia; Georgiou, Kostas; Graf, Andrea; Kokh, Stepan; Kozhiparambil Sajith, Lakshmi P.; Mayo, Christopher; Schäfer, Vera M.; Volk, Claudia; Schmidt, Piet O.; Pfeifer, Thomas; Crespo Lopez-Urrutia, Jose R.

doi:https://doi.org/10.1063/5.0160537

Zugriffsnummer	50469
Dokumenttyp	Zeitschriftenartikel
Peer Review	mit Peer Review
Sprache	Englisch
Titel	Sympathetically cooled highly charged ions in a radio-frequency trap with superconducting magnetic shielding
Autor(in); Institution	Dijck, Elwin A.; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Warnecke, Christian; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Wehrheim, Malte; QUEST Institute for Experimental Quantum Metrology, PTB-Braunschweig; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Henninger, Ruben B.; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Eff, Julia; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Georgiou, Kostas; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Graf, Andrea; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Kokh, Stepan; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Kozhiparambil Sajith, Lakshmi P.; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY; Humboldt University of Berlin, Department of Physics, Berlin, GERMANY Mayo, Christopher; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Schäfer, Vera M.; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Volk, Claudia; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Schmidt, Piet O.; QUEST Institute for Experimental Quantum Metrology, PTB-Braunschweig; Leibniz Universität Hannover, Institut für Quantenoptik, Hannover, GERMANY Pfeifer, Thomas; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY Crespo Lopez-Urrutia, Jose R.; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY
Quelle/Jahr	Review of Scientific Instruments: 94 (2023), 8, 083203-1 - 083203-16
Artikelnummer	083203
ISSN	0034-6748 (print) ; 1089-7623 (online)
DOI	https://doi.org/10.1063/5.0160537
Verlag	Melville, NY: American Institute of Physics (AIP)
Freie Schlagworte	Metrology ; Quantum logic ; Superconductivity ; Hyperfine structure ; Lenses ; Radiofrequency ; Ion trap ; Quantum computing
Zusammenfassung	We sympathetically cool highly charged ions (HCI) in Coulomb crystals of Doppler-cooled Be⁺ ions confined in a cryogenic linear Paul trap that is integrated into a fully enclosing radio-frequency resonator manufactured from superconducting niobium. By preparing a single Be⁺ cooling ion and a single HCI, quantum logic spectroscopy toward frequency metrology and qubit operations with a great variety of species are enabled. While cooling down the assembly through its transition temperature into the superconducting state, an applied quantization magnetic field becomes persistent, and the trap becomes shielded from subsequent external electromagnetic fluctuations. Using a magnetically sensitive hyperfine transition of Be⁺ as a qubit, we measure the fractional decay rate of the stored magnetic field to be at the 10^-10 s^-1 level. Ramsey interferometry and spin-echo measurements yield coherence times of >400 ms, demonstrating excellent passive magnetic shielding at frequencies down to DC.

Kostenfreier Zugang	Open Access Hybrid
Rechteinformation	CC BY 4.0 ; Creative Commons Attribution 4.0 License

Themenbereich der Metrologie	Zeit und Frequenz
Innovationscluster	Quantentechnologie
Geschäftsfelder	Grundlagen der Metrologie
Forschungsprojekt	This project received funding from the Max Planck Society; the Max-Planck-Riken-PTB- Center for Time, Constants and Fundamental Symmetries; the European Metrology Program for Innovation and Research (EMPIR), which is co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation program (Project Nos. 17FUN07 CC4C and 20FUN01 TSCAC); the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 101019987); and the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the collaborative research center Grant No. SFB 1225 ISOQUANT, through Germany’s Excellence Strategy Grant No. EXC-2123 QuantumFrontiers-390837967, and through Grant No. SCHM2678/5-1. We acknowledge the generous funding by the German Federal Ministry of Education and Research (BMBF) within the program Grant No. 13N15973 "Quantum technologies-from basic research to market" (Projekt VAUQSI-Viel-Frequenz-Ansteuerung Ultrastabiler Qubits in Supraleitenden Ionenfallen).
Förderinformationen (1)	Förderername: Max-Planck-Gesellschaft (MPG) Förderer ID: 0000 0001 2193 5698 Förderer ID Typ: ISNI
Förderinformationen (2)	Förderername: Max-Planck, RIKEN, PTB Center for Time, Constants, and Fundamental Symmetries (C-TCFS)
Förderinformationen (3)	Förderername: European Commission (EC) Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMPIR 2017 Fundamental Titel der Förderung: 17FUN07: CC4C: Coulomb Crystals for Clocks Förderungsnummer: 17FUN07
Förderinformationen (4)	Förderername: European Commission (EC) Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMPIR 2020 Fundamental Titel der Förderung: 20FUN01: TSCAC: Two-species composite atomic clocks Förderungsnummer: 20FUN01
Förderinformationen (5)	Förderername: European Research Council (ERC) Förderer ID: 0000 0000 8923 0953 Förderer ID Typ: ISNI Förderprogramm: European Union’s Horizon 2020 research and innovation program Förderungsnummer: 101019987
Förderinformationen (6)	Förderername: Deutsche Forschungsgemeinschaft (DFG) Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderprogramm: SFB 1225 ISOQUANT
Förderinformationen (7)	Förderername: Deutsche Forschungsgemeinschaft (DFG) Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderprogramm: Germany’s Excellence Strategy EXC-2123 QuantumFrontiers Förderungsnummer: 390837967
Förderinformationen (8)	Förderername: Deutsche Forschungsgemeinschaft (DFG) Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderprogramm: SCHM2678/5-1.
Förderinformationen (9)	Förderername: Bundesministerium für Bildung und Forschung (BMBF) Förderer ID: 0000 0000 9090 0344 Förderer ID Typ: ISNI Förderprogramm: Quantum technologies - from basic research to market Titel der Förderung: VAUQSI - Viel-Frequenz-Ansteuerung Ultrastabiler Qubits in Supraleitenden Ionenfallen Förderungsnummer: 13N15973

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Dijck, E. A., Warnecke, C., Wehrheim, M., Henninger, R. B., Eff, J., Georgiou, K., Graf, A., Kokh, S., Kozhiparambil Sajith, L. P., Mayo, C., Schäfer, V. M., Volk, C., Schmidt, P. O., Pfeifer, T., & Crespo Lopez-Urrutia, J. R. (2023). Sympathetically cooled highly charged ions in a radio-frequency trap with superconducting magnetic shielding. Review of Scientific Instruments, 94(8), 083203-1–083203-16. https://doi.org/10.1063/5.0160537

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