4 papers
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…
Unlocking the Power of Boltzmann Machines by Parallelizable Sampler and Efficient Temperature Estimation
Kentaro Kubo, Hayato Goto
Boltzmann machines (BMs) are powerful energy-based generative models, but their heavy training cost has largely confined practical use to Restricted BMs (RBMs) trained with an effi…
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…