High-Fidelity, Frequency-Flexible Two-Qubit Fluxonium Gates …
Sep 25, 2023 · We introduce a novel method of coupling fluxonium qubits, using a tunable transmon coupler. By mixing qubit types, we show that this scheme offers advantages in robustness, extensibility, and gate fidelities.
Microwave-activated gates between a fluxonium and a transmon qubit
Jun 13, 2022 · We propose and analyze two types of microwave-activated gates between a fluxonium and a transmon qubit, namely a cross-resonance (CR) and a CPHASE gate. The large frequency difference between a transmon and a fluxonium makes the realization of a two-qubit gate challenging.
[2304.06087] High-Fidelity, Frequency-Flexible Two-Qubit Fluxonium ...
Apr 12, 2023 · We propose and demonstrate an architecture for fluxonium-fluxonium two-qubit gates mediated by transmon couplers (FTF, for fluxonium-transmon-fluxonium).
two-qubit gates between capacitively coupled transmons and uxonia. For uxonia with medium frequencies, be-tween 0:25-1:0GHz, we show that the CR gate activated by driving the uxonium at the transmon frequency is an ideal two-qubit gate candidate. In order to achieve simi-lar gate times, the coupling capacitance needs to be larger
Quantum computing research | Rigetti Computing
Apr 23, 2019 · We describe such a functional architecture, based on a planar lattice of transmon and fluxonium qubits, parametric amplifiers, and a novel fast DC controlled two-qubit gate. Driving the leading edge in quantum system design and performance.
Record-Breaking Single- and Two-Qubit Gates with Fluxonium …
Oct 22, 2024 · Our recent study in Physical Review X, co-authored by Atlantic Quantum co-founders, reveals fluxonium’s superior performance in multi-qubit devices compared to even the best transmon-based...
A functional architecture for scalable quantum computing | Rigetti ...
We describe such a functional architecture, based on a planar lattice of transmon and fluxonium qubits, parametric amplifiers, and a novel fast DC controlled two-qubit gate. Read More
Sep 25, 2023 · Here, we implement FTF with a flux-tunable transmon coupler and demonstrate a microwave-activated controlled-Z (CZ) gate whose operation frequency can be tuned over a 2-GHz range, adding frequency allocation freedom for FTFs in larger systems.
Precision frequency tuning of tunable transmon qubits using …
Here, we demonstrate precision tuning of the maximum |0 →|1 transition frequency of tunable transmon qubits by performing ABAA at room temperature using commercially available test equipment. Learn More
High-fidelity transmon-coupler-activated gate on fluxonium …
Apr 18, 2024 · Here, we propose a way to perform a high-fidelity C C Z gate on fluxoniums capacitively connected via a transmon qubit, activated by a microwave pulse on the coupler. The main advantages of the approach are relative quickness, simplicity of calibration and significant suppression of the unwanted longitudinal Z Z interaction.