Tunable Superconducting Flux Qubits with Long Coherence Times
T. Chang, T. Cohen, I. Holzman, G. Catelani, M. Stern
DOI 10.1103/PhysRevApplied.19.024066 · Physical Review Applied
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
In this work, we study a series of tunable flux qubits inductively coupled to a coplanar waveguide resonator fabricated on a sapphire substrate. Each qubit includes an asymmetric superconducting quantum interference device, which is controlled by the application of an external magnetic field and acts as a tunable Josephson junction. The tunability of the qubits is typically ±3.5GHz around their central gap frequency. The measured relaxation times are limited by dielectric losses in the substrate and can attain T1∼8μs. The echo dephasing times are limited by flux noise even at optimal points and reach T2E∼4μs, almost an order of magnitude longer than state of the art.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Controllable Coupling of Superconducting Flux Qubits
similarity 0.98S. H. W. van der Ploeg et al.
Source status unknown — claims are unverified
Strong Tunable Coupling between a Superconducting Charge and Phase Qubit
similarity 0.98A. Fay et al.
Source status unknown — claims are unverified
Phase coherent dynamics of a superconducting flux qubit with capacitive bias readout
similarity 0.97F. Deppe et al.
Source status unknown — claims are unverified
Spectroscopy on Two Coupled Superconducting Flux Qubits
similarity 0.97J. B. Majer et al.
Source status unknown — claims are unverified
Superconducting persistent-current qubit
similarity 0.97T. P. Orlando et al.
Source status unknown — claims are unverified
Superconducting-Semiconducting Voltage-Tunable Qubits in the Third Dimension
similarity 0.96T.M. Hazard et al.
Source status unknown — claims are unverified