Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 033203 |
| Fachzeitschrift | Physical review letters |
| Jahrgang | 133 |
| Ausgabenummer | 3 |
| Publikationsstatus | Veröffentlicht - 19 Juli 2024 |
Abstract
We present the experimental realization of a continuous dynamical decoupling scheme which suppresses leading frequency shifts in a multi-ion frequency reference based on Ca+40. By near-resonant magnetic coupling of the S21/2 and D25/2 Zeeman sublevels using radio-frequency dressing fields, engineered transitions with reduced sensitivity to magnetic-field fluctuations are obtained. A second stage detuned dressing field reduces the influence of amplitude noise in the first stage driving fields and decreases 2nd-rank tensor shifts, such as the electric quadrupole shift. Suppression of the quadratic dependence of the quadrupole shift to 3(2) mHz/μm2 and coherence times of 290(20) ms on the optical transition are demonstrated even within a laboratory environment with significant magnetic field noise. Besides removing inhomogeneous line shifts in multi-ion clocks, the demonstrated dynamical decoupling technique may find applications in quantum computing and simulation with trapped ions by a tailored design of decoherence-free subspaces.
ASJC Scopus Sachgebiete
Zitieren
- Standard
- Harvard
- Apa
- Vancouver
- BibTex
- RIS
in: Physical review letters, Jahrgang 133, Nr. 3, 033203, 19.07.2024.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Multi-ion Frequency Reference Using Dynamical Decoupling
AU - Pelzer, Lennart
AU - Dietze, Kai
AU - Martínez-Lahuerta, Víctor José
AU - Krinner, Ludwig
AU - Kramer, Johannes
AU - Dawel, Fabian
AU - Spethmann, Nicolas C.H.
AU - Hammerer, Klemens
AU - Schmidt, Piet O.
PY - 2024/7/19
Y1 - 2024/7/19
N2 - We present the experimental realization of a continuous dynamical decoupling scheme which suppresses leading frequency shifts in a multi-ion frequency reference based on Ca+40. By near-resonant magnetic coupling of the S21/2 and D25/2 Zeeman sublevels using radio-frequency dressing fields, engineered transitions with reduced sensitivity to magnetic-field fluctuations are obtained. A second stage detuned dressing field reduces the influence of amplitude noise in the first stage driving fields and decreases 2nd-rank tensor shifts, such as the electric quadrupole shift. Suppression of the quadratic dependence of the quadrupole shift to 3(2) mHz/μm2 and coherence times of 290(20) ms on the optical transition are demonstrated even within a laboratory environment with significant magnetic field noise. Besides removing inhomogeneous line shifts in multi-ion clocks, the demonstrated dynamical decoupling technique may find applications in quantum computing and simulation with trapped ions by a tailored design of decoherence-free subspaces.
AB - We present the experimental realization of a continuous dynamical decoupling scheme which suppresses leading frequency shifts in a multi-ion frequency reference based on Ca+40. By near-resonant magnetic coupling of the S21/2 and D25/2 Zeeman sublevels using radio-frequency dressing fields, engineered transitions with reduced sensitivity to magnetic-field fluctuations are obtained. A second stage detuned dressing field reduces the influence of amplitude noise in the first stage driving fields and decreases 2nd-rank tensor shifts, such as the electric quadrupole shift. Suppression of the quadratic dependence of the quadrupole shift to 3(2) mHz/μm2 and coherence times of 290(20) ms on the optical transition are demonstrated even within a laboratory environment with significant magnetic field noise. Besides removing inhomogeneous line shifts in multi-ion clocks, the demonstrated dynamical decoupling technique may find applications in quantum computing and simulation with trapped ions by a tailored design of decoherence-free subspaces.
UR - http://www.scopus.com/inward/record.url?scp=85199177503&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2311.13736
DO - 10.48550/arXiv.2311.13736
M3 - Article
C2 - 39094148
AN - SCOPUS:85199177503
VL - 133
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 3
M1 - 033203
ER -