A5056809447- Quantum and electron transport phenomena
- Research in Social Sciences
- Quantum Computing Algorithms and Architecture
- Superconducting and THz Device Technology
- Physics of Superconductivity and Magnetism
- Quantum Information and Cryptography
- Sports Performance and Training
- Counseling, Therapy, and Family Dynamics
- Calibration and Measurement Techniques
- Social Work Education and Practice
- Transition Metal Oxide Nanomaterials
- Particle accelerators and beam dynamics
- Cryospheric studies and observations
- Winter Sports Injuries and Performance
- Advanced Frequency and Time Standards
Aalto University
2024
Helsinki Institute of Physics
1983
University of Helsinki
1983
Abstract Achieving fast gates and long coherence times for superconducting qubits presents challenges, typically requiring either a stronger coupling of the drive line or an excessively strong microwave signal to qubit. To address this, we introduce on-chip filters qubit exhibiting stopband at frequency, thus enabling subharmonic facilitating single-qubit gates, reduced thermal load. The exhibit extrinsic relaxation time few seconds while sub-10-ns with control. Here show up 200-fold...
We demonstrate a simple and versatile resonator design based on short strip of typical coplanar waveguide shorted at one end to the ground shunted other with large parallel-plate capacitor. Due shape structure, we coin it tadpole resonator. The allows tailoring characteristic impedance especially suit applications requiring low values. impedances ranging from $Z_c = 2\,{\Omega}$ $10\,{\Omega}$ frequency range $f_0 290\,\mathrm{MHz}$ $1.1\,\mathrm{GHz}$ while reaching internal quality factors...
Recently, ultrasensitive calorimeters have been proposed as a resource-efficient solution for multiplexed qubit readout in superconducting large-scale quantum processors. However, experiments demonstrating frequency multiplexing of these superconductor-normal conductor-superconductor (SNS) sensors are coarse. To this end, we present the design, fabrication, and operation three SNS with frequency-multiplexed input probe circuits, all on single chip. These devices their frequencies range...
Achieving fast gates and long coherence times for superconducting qubits presents challenges, typically requiring either a stronger coupling of the drive line or an excessively strong microwave signal to qubit. To address this, we introduce on-chip filters qubit exhibiting stopband at frequency, thus enabling subharmonic facilitating single-qubit gates, reduced thermal load. The exhibit extrinsic relaxation time few seconds while sub-10-ns with control. Here show up 200-fold improvement in...
We demonstrate a simple and versatile resonator design based on short strip of typical coplanar waveguide shorted at one end to the ground shunted other with large parallel-plate capacitor. Due shape structure, we coin it tadpole resonator. The allows tailoring characteristic impedance especially suit applications requiring low values. impedances ranging from <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:msub><a:mi>Z</a:mi><a:mi...