139 citations · 230 across the 12 of their papers we have counts for
12 papers
Heralded Leakage Detection with Preserved Computational-State Coherence in a Fixed-Frequency Transmon
Takeaki Miyamura, Zhiling Wang, Peter A. Spring +5
Leakage out of the computational subspace is a major error mechanism in superconducting quantum processors. Detecting leakage without disturbing the encoded quantum information can…
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…
Deterministic Quantum Communication Between Fixed-Frequency Superconducting Qubits via Broadband Resonators
Takeaki Miyamura, Zhiling Wang, Kohei Matsuura +5
Quantum communication between remote chips is essential for realizing large-scale superconducting quantum computers. For such communication, itinerant microwave photons propagating…
Generation of frequency-bin-encoded dual-rail cluster states via time-frequency multiplexing of microwave photonic qubits
Zhiling Wang, Takeaki Miyamura, Yoshiki Sunada +4
Cluster states are a class of multi-qubit entangled states with broad applications such as quantum metrology and one-way quantum computing. Here, we present a protocol to generate…
Dissipation and noise in strongly driven Josephson junctions
Vasilii Vadimov, Yoshiki Sunada, Mikko Möttönen
In circuit quantum electrodynamical systems, the quasiparticle-related losses in Josephson junctions are suppressed due to the gap in the superconducting density of states which is…
Generation of Frequency-Tunable Shaped Single Microwave Photons Using a Fixed-Frequency Superconducting Qubit
Takeaki Miyamura, Yoshiki Sunada, Zhiling Wang +3
Scaling up a superconducting quantum computer will likely require quantum communication between remote chips, which can be implemented using an itinerant microwave photon in a tran…
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…
Fast multiplexed superconducting qubit readout with intrinsic Purcell filtering
Peter A. Spring, Luka Milanovic, Yoshiki Sunada +4
Fast and accurate qubit measurement remains a critical challenge on the path to fault-tolerant quantum computing. In superconducting quantum circuits, fast qubit measurement has be…
Methods to achieve near-millisecond energy relaxation and dephasing times for a superconducting transmon qubit
Mikko Tuokkola, Yoshiki Sunada, Heidi Kivijärvi +6
Superconducting qubits are one of the most promising physical systems for implementing quantum computers. However, executing quantum algorithms of practical computational advantage…
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…
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…
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…