463 citations · 1.5k across the 19 of their papers we have counts for
19 papers
High-gain and large-bandwidth Josephson parametric amplifier influenced by Fabry-Pérot interference
Shingo Kono, Jesper Ilves, Arjan F. van Loo +8
Quantum-limited parametric amplifiers are essential components for many quantum technologies operating in the microwave domain. Achieving both high gain and broad bandwidth, howeve…
Efficient tomography of microwave photonic cluster states
Yoshiki Sunada, Shingo Kono, Jesper Ilves +6
Entanglement among a large number of qubits is a crucial resource for many quantum algorithms. Such many-body states have been efficiently generated by entangling a chain of itiner…
Photon-noise-tolerant dispersive readout of a superconducting qubit using a nonlinear Purcell filter
Yoshiki Sunada, Kenshi Yuki, Zhiling Wang +7
Residual noise photons in a readout resonator become a major source of dephasing for a superconducting qubit when the resonator is optimized for a fast, high-fidelity dispersive re…
Mechanically Induced Correlated Errors on Superconducting Qubits with Relaxation Times Exceeding 0.4 Milliseconds
Shingo Kono, Jiahe Pan, Mahdi Chegnizadeh +4
Superconducting qubits are one of the most advanced candidates to realize scalable and fault-tolerant quantum computing. Despite recent significant advancements in the qubit lifeti…
A squeezed mechanical oscillator with milli-second quantum decoherence
Amir Youssefi, Shingo Kono, Mahdi Chegnizadeh +1
An enduring challenge in constructing mechanical oscillator-based hybrid quantum systems is to ensure engineered coupling to an auxiliary degree of freedom while maintaining good m…
Fast readout and reset of a superconducting qubit coupled to a resonator with an intrinsic Purcell filter
Yoshiki Sunada, Shingo Kono, Jesper Ilves +4
Coupling a resonator to a superconducting qubit enables various operations on the qubit, including dispersive readout and unconditional reset. The speed of these operations is limi…
Topological lattices realized in superconducting circuit optomechanics
Amir Youssefi, Shingo Kono, Andrea Bancora +4
Cavity optomechanics enables controlling mechanical motion via radiation pressure interaction, and has contributed to the quantum control of engineered mechanical systems ranging f…
Dissipation-based Quantum Sensing of Magnons with a Superconducting Qubit
Samuel Piotr Wolski, Dany Lachance-Quirion, Yutaka Tabuchi +4
Hybrid quantum devices expand the tools and techniques available for quantum sensing in various fields. Here, we experimentally demonstrate quantum sensing of the steady-state magn…
Fast parametric two-qubit gates with suppressed residual interaction using a parity-violated superconducting qubit
Atsushi Noguchi, Alto Osada, Shumpei Masuda +7
We demonstrate fast two-qubit gates using a parity-violated superconducting qubit consisting of a capacitively-shunted asymmetric Josephson-junction loop under a finite magnetic fl…
Programmable directional emitter and receiver of itinerant microwave photons in a waveguide
Nicolas Gheeraert, Shingo Kono, Yasunobu Nakamura
We theoretically demonstrate dynamically selective bidirectional emission and absorption of a single itinerant microwave photon in a waveguide. The proposed device is an artificial…
Breaking the trade-off between fast control and long lifetime of a superconducting qubit
Shingo Kono, Kazuki Koshino, Dany Lachance-Quirion +4
The rapid development in designs and fabrication techniques of superconducting qubits has helped making coherence times of qubits longer. In the near future, however, the radiative…
On-demand generation and characterization of a microwave time-bin qubit
Jesper Ilves, Shingo Kono, Yoshiki Sunada +4
Superconducting circuits offer a scalable platform for the construction of large-scale quantum networks where information can be encoded in multiple temporal modes of propagating m…
Entanglement-based single-shot detection of a single magnon with a superconducting qubit
Dany Lachance-Quirion, Samuel Piotr Wolski, Yutaka Tabuchi +3
The recent development of hybrid systems based on superconducting circuits has opened up the possibility of engineering sensors of quanta of different degrees of freedom. Quantum m…
Protection of a qubit with a subradiance effect: Josephson quantum filter
Kazuki Koshino, Shingo Kono, Yasunobu Nakamura
The coupling between a superconducting qubit and a control line inevitably results in radiative decay of the qubit into the line. We propose a Josephson quantum filter (JQF), which…
Logical measurement-based quantum computation in circuit-QED
Jaewoo Joo, Chang-Woo Lee, Shingo Kono +1
We propose a new scheme of measurement-based quantum computation (MBQC) using an error-correcting code against photon-loss in circuit quantum electrodynamics. We describe a specifi…
Nonreciprocal microwave transmission based on Gebhard-Ruckenstein hopping
Shumpei Masuda, Shingo Kono, Keishi Suzuki +3
We study nonreciprocal microwave transmission based on the Gebhard-Ruckenstein hopping. We consider a superconducting device that consists of microwave resonators and a coupler. Th…
Quantum non-demolition detection of an itinerant microwave photon
S. Kono, K. Koshino, Y. Tabuchi +2
Photon detectors are an elementary tool to measure electromagnetic waves at the quantum limit and are heavily demanded in the emerging quantum technologies such as communication, s…
Information-to-work conversion by Maxwell's demon in a superconducting circuit-QED system
Y. Masuyama, K. Funo, Y. Murashita +6
The gedanken experiment of Maxwell's demon has led to the studies concerning the foundations of thermodynamics and statistical mechanics. The demon measures fluctuations of a syste…
Nonclassical photon number distribution in a superconducting cavity under a squeezed drive
S. Kono, Y. Masuyama, T. Ishikawa +5
A superconducting qubit in the strong dispersive regime of a circuit quantum electrodynamics system is a powerful probe for microwave photons in a cavity mode. In this regime, a qu…