94 citations · 205 across the 4 of their papers we have counts for
4 papers
Galvanically connected tunable coupler between a cavity and a waveguide
Kazuki Koshino
One of the key technologies in recent quantum devices is the tunable coupling among quantum elements such as qubits, cavities, and waveguides. In this work, we propose a cavity-wav…
Theory of microwave single-photon detection using an impedance-matched system
Kazuki Koshino, Kunihiro Inomata, Zhirong Lin +2
By properly driving a qubit-resonator system in the strong dispersive regime, we implement an "impedance-matched" system in the dressed states, where a resonant single photon d…
Josephson parametric phase-locked oscillator and its application to dispersive readout of superconducting qubits
Z. R. Lin, K. Inomata, K. Koshino +4
The parametric phase-locked oscillator (PPLO), also known as a parametron, is a resonant circuit in which one of the reactances is periodically modulated. It can detect, amplify, a…
Microwave Down-Conversion with an Impedance-Matched System in Driven Circuit QED
K. Inomata, K. Koshino, Z. R. Lin +4
By driving a dispersively coupled qubit-resonator system, we realize an "impedance-matched" system that has two identical radiative decay rates from the top level and interacts…