119 citations · 119 across the 2 of their papers we have counts for
6 papers
Tutorial: Gate-based superconducting quantum computing
Sangil Kwon, Akiyoshi Tomonaga, Gopika Lakshmi Bhai +2
In this tutorial, we introduce basic conceptual elements to understand and build a gate-based superconducting quantum computing system.
Ultralow-power coherent qubit control using AQFP logic at millikelvin temperatures
Hiroto Mukai, Akiyoshi Tomonaga, Rui Wang +5
Qubit controllers are essential for scaling superconducting quantum processors, but implementing them at the 10 mK stage of a dilution refrigerator remains challenging due to strin…
Efficient spectrum analysis for multi-junction superconducting circuit
A. Tomonaga, H. Mukai, K. Mizuno +1
The extraction of transition frequencies from a spectrum has conventionally relied on empirical methods, and particularly in complex systems, it is a time-consuming and cumbersome…
Spectral Properties of Two Superconducting Artificial Atoms Coupled to a Resonator in the Ultrastrong Coupling Regime
Akiyoshi Tomonaga, Roberto Stassi, Hiroto Mukai +3
We experimentally investigate a superconducting circuit composed of two flux qubits ultrastrongly coupled to a common LC resonator. Owing to the large anharmonicity of the flux qub…
Stabilization of Kerr-cat qubits with quantum circuit refrigerator
Shumpei Masuda, Shunsuke Kamimura, Tsuyoshi Yamamoto +2
A periodically-driven superconducting nonlinear resonator can implement a Kerr-cat qubit, which provides a promising route to a quantum computer with a long lifetime. However, the…
Residual--coupling suppression and fast two-qubit gate for Kerr-cat qubits based on level-degeneracy engineering
Takaaki Aoki, Akiyoshi Tomonaga, Kosuke Mizuno +1
Building large-scale quantum computers requires an interqubit-coupling scheme with a high on-off ratio to avoid unwanted crosstalk coming from residual coupling and to enable fast…