66 citations · 114 across the 6 of their papers we have counts for
6 papers
Superconducting Quantum Memory with a Suspended Coaxial Resonator
Lev Krayzman, Chan U Lei, Suhas Ganjam +3
A promising way to store quantum information is by encoding it in the bosonic excitations of microwave resonators. This provides for long coherence times, low dephasing rates, as w…
Surpassing millisecond coherence times in on-chip superconducting quantum memories by optimizing materials, processes, and circuit design
Suhas Ganjam, Yanhao Wang, Yao Lu +10
The performance of superconducting quantum circuits for quantum computing has advanced tremendously in recent decades; however, a comprehensive understanding of relaxation mechanis…
Microwave loss characterization using multi-mode superconducting resonators
Chan U Lei, Suhas Ganjam, Lev Krayzman +5
Measuring the losses arising from different materials and interfaces is crucial to improving the coherence of superconducting quantum circuits. Although this has been of interest f…
Precision measurement of the microwave dielectric loss of sapphire in the quantum regime with parts-per-billion sensitivity
Alexander P. Read, Benjamin J. Chapman, Chan U Lei +5
Dielectric loss is known to limit state-of-the-art superconducting qubit lifetimes. Recent experiments imply upper bounds on bulk dielectric loss tangents on the order of par…
High coherence superconducting microwave cavities with indium bump bonding
Chan U Lei, Lev Krayzman, Suhas Ganjam +2
Low-loss cavities are important in building high-coherence superconducting quantum computers. Generating high quality joints between parts is crucial to the realization of a scalab…
Micromachined integrated quantum circuit containing a superconducting qubit
T. Brecht, Y. Chu, C. Axline +6
We present a device demonstrating a lithographically patterned transmon integrated with a micromachined cavity resonator. Our two-cavity, one-qubit device is a multilayer microwave…