41 citations · 53 across the 6 of their papers we have counts for
6 papers
Instantaneous-Frame Theory of Strongly Driven Parametric Gates
Kentaro Kubo, Shinichi Inoue, Jushin Tei +3
Parametric two-qubit gates using tunable couplers are a promising approach to scalable superconducting quantum processors. However, conventional theories formulated in the idle eig…
Parametrically Driven iSWAP Gate Using a Capacitively Shunted Double-Transmon Coupler at the Zero-Flux Sweet Spot
Shinichi Inoue, Rui Li, Kentaro Kubo +3
A double-transmon coupler (DTC) enables a fast, high-fidelity CZ gate between two highly detuned, fixed-frequency transmon qubits. Moreover, a recently proposed capacitively shunte…
Training Energy-Based Models with Non-MCMC Samplers and Efficient Temperature Estimation
Kentaro Kubo, Hayato Goto
Efficient sampling from Boltzmann distributions over discrete variables is a fundamental operation in a wide range of applications. While fast non-MCMC samplers have recently emerg…
Capacitively Shunted Double-Transmon Coupler Realizing Bias-Free Idling and High-Fidelity CZ Gate
Rui Li, Kentaro Kubo, Yinghao Ho +4
A high-fidelity CZ gate utilizing a double-transmon coupler (DTC) has recently been demonstrated as a building block for superconducting quantum processors. Like many other kinds o…
Realization of High-Fidelity CZ Gate based on a Double-Transmon Coupler
Rui Li, Kentaro Kubo, Yinghao Ho +3
Striving for higher gate fidelity is crucial not only for enhancing existing noisy intermediate-scale quantum (NISQ) devices but also for unleashing the potential of fault-tolerant…
High-performance multiqubit system with double-transmon couplers: Toward scalable superconducting quantum computers
Kentaro Kubo, Yinghao Ho, Hayato Goto
Tunable couplers in superconducting quantum computers have enabled fast and accurate two-qubit gates, with reported high fidelities over 99% in various architectures and gate imple…