3 papers
quant-ph2025
On-chip microwave sensing of quasiparticles in tantalum superconducting circuits on silicon for scalable quantum technologies
Shima Poorgholam-Khanjari, Paniz Foshat, Mingqi Zhang +3
The performance and scalability of superconducting quantum circuits are fundamentally constrained by non-equilibrium quasiparticles, which induce microwave losses that limit resona…
quant-ph2025
Quasiparticle Dynamics in NbN Superconducting Microwave Resonators at Single Photon Regime
Paniz Foshat, Shima Poorgholam-khanjari, Valentino Seferai +7
Exchanging energy below the superconducting gap introduces quasiparticle energy distributions in superconducting quantum circuits, which will be responsible for their decoherence.…
quant-ph2024
Engineering high-Q superconducting tantalum microwave coplanar waveguide resonators for compact coherent quantum circuits
Shima Poorgholam-Khanjari, Valentino Seferai, Paniz Foshat +5
Tantalum (Ta) has recently received considerable attention in manufacturing robust superconducting quantum circuits. Ta offers low microwave loss, high kinetic inductance compared…