Flip-Chip-Based Microwave Spectroscopy of Andreev Bound States in a Planar Josephson Junction
M. Hinderling, D. Sabonis, S. Paredes, D.Z. Haxell, M. Coraiola, S.C. ten Kate, E. Cheah, F. Krizek, R. Schott, W. Wegscheider, F. Nichele
DOI 10.1103/PhysRevApplied.19.054026 · 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
We demonstrate a flip-chip-based approach to microwave measurements of Andreev bound states (ABSs) in a gate-tunable planar Josephson junction (JJ) using inductively coupled superconducting low-loss resonators. By means of electrostatic gating, we present control of both the density and transmission of ABSs. Phase biasing of the device shifted the resonator frequency, consistent with the modulation of supercurrent in the junction. Two-tone spectroscopy measurements revealed an isolated ABS consistent with an average induced superconducting gap of 184μeV and a gate-tunable transmission approaching 0.98. Our results represent the feasibility of using the flip-chip technique to address and study ABSs in planar JJs, and they constitute a promising path towards microwave applications with superconductor-semiconductor two-dimensional materials.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| InAs/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
Microwave Andreev bound state spectroscopy in a semiconductor-based Planar Josephson junction
similarity 0.95Bassel Heiba Elfeky et al.
Source status unknown — claims are unverified
Direct Microwave Spectroscopy of Andreev Bound States in Planar Ge Josephson Junctions
similarity 0.94M. Hinderling et al.
Source status unknown — claims are unverified
Microwave signatures of topological superconductivity in planar Josephson junctions
similarity 0.92Barış Pekerten et al.
Source status unknown — claims are unverified
Enhanced topological superconductivity in spatially modulated planar Josephson junctions
similarity 0.91Purna P. Paudel et al.
Source status unknown — claims are unverified
Microwave sensing of Andreev bound states in a gate-defined superconducting quantum point contact
similarity 0.91Vivek Chidambaram et al.
Source status unknown — claims are unverified
Topological superconductivity in planar Josephson junctions: Narrowing down to the nanowire limit
similarity 0.91F. Setiawan et al.
Source status unknown — claims are unverified