Electric-field noise in a high-temperature superconducting surface ion trap
P. C. Holz, K. Lakhmanskiy, D. Rathje, P. Schindler, Y. Colombe, R. Blatt
DOI 10.1103/PhysRevB.104.064513 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Scaling up trapped-ion quantum computers requires new trap materials to be explored. Here we present experiments with a surface ion trap made from the high-temperature superconductor YBCO, a promising material for future trap designs. We show that voltage noise from superconducting electrode leads is negligible within the sensitivity SV=9×10−20V2/Hz of our setup, and for lead dimensions typical for advanced trap designs. Furthermore, we investigate the frequency and temperature dependence of electric-field noise above a YBCO surface. We find a 1/f spectral dependence of the noise and a nontrivial temperature dependence, with a plateau in the noise stretching over roughly 60K. The onset of the plateau coincides with the superconducting transition, indicating a connection between the dominant noise and the YBCO trap material. We exclude the YBCO bulk as origin of the noise and suggest further experiments to decide between the two remaining options explaining the observed temperature dependence: noise screening within the superconducting phase, or surface noise activated by the YBCO bulk through some unknown mechanism.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89 | Pressure not reported | onset |
Similar papers
Mechanisms of heat conductivity in high-Tc superconductors
similarity 0.94Yury Pogorelov et al.
Source status unknown — claims are unverified
Ion-channeling anomalies at the superconducting transition temperature in single-crystal YBa2Cu3O7−y
similarity 0.94T. Haga et al.
Source status unknown — claims are unverified
High-field scaling behavior of thermodynamic and transport quantities of YBa2Cu3O7−δ near the superconducting transition
similarity 0.94U. Welp et al.
Source status unknown — claims are unverified
Correlations between the Hall coefficient and the superconducting transport properties of oxygen-deficient YBa2Cu3O7−δ epitaxial thin films
similarity 0.93E. C. Jones et al.
Source status unknown — claims are unverified
Charge-fluctuation effect on the critical temperature of layered high-Tc superconductors
similarity 0.93D. Ariosa & H. Beck
Source status unknown — claims are unverified
Superconducting-state thermal transport in YBa2Cu3O7−δ
similarity 0.93J. L. Cohn et al.
Source status unknown — claims are unverified