Two-fluxonium cross-resonance gate

E Dogan, D Rosenstock, L Le Guevel, H Xiong… - Physical Review …, 2023 - APS
The superconducting fluxonium qubit has a great potential for high-fidelity quantum gates
with its long coherence times and strong anharmonicity at the half-flux-quantum sweet spot …

Entangling transmons with low-frequency protected superconducting qubits

A Maiani, M Kjaergaard, C Schrade - PRX Quantum, 2022 - APS
Novel qubits with intrinsic noise protection constitute a promising route for improving the
coherence of quantum information in superconducting circuits. However, many protected …

Comprehensive explanation of ZZ coupling in superconducting qubits

SP Fors, J Fernández-Pendás, AF Kockum - arXiv preprint arXiv …, 2024 - arxiv.org
A major challenge for scaling up superconducting quantum computers is unwanted
couplings between qubits, which lead to always-on ZZ couplings that impact gate fidelities …

Robust shaped pulses for arrays of superconducting or semiconductor spin qubits with fixed Ising coupling

DW Kanaar, JP Kestner - Physical Review A, 2024 - APS
A major current challenge in solid-state quantum computing is to scale qubit arrays to a
larger number of qubits. This is hampered by the complexity of the control wiring for the large …

High-Fidelity Two-Qubit Gates between Fluxonium Qubits with a Resonator Coupler

EL Rosenfeld, CT Hann, DI Schuster, MH Matheny… - PRX Quantum, 2024 - APS
We take a bottom-up first-principles approach to designing a two-qubit gate between
fluxonium qubits for minimal error, speed, and control simplicity. Our proposed architecture …

Cross-resonance control of an oscillator with a fluxonium ancilla

G Zheng, S Lieu, EL Rosenfeld, K Noh… - arXiv preprint arXiv …, 2024 - arxiv.org
The conditional displacement (CD) gate between an oscillator and a discrete-variable
ancilla plays a key role in quantum information processing tasks, such as enabling universal …

Noise reduction via optimal control in a light-matter quantum system

F Albarrán-Arriagada, G Romero, E Solano… - arXiv preprint arXiv …, 2024 - arxiv.org
Quantum noise reduction below the shot noise limit is a signature of light-matter quantum
interaction. A limited amount of squeezing can be obtained along the transient evolution of a …

Scalable Quantum Control of Solid-State Qubit Systems to Counteract Physical Errors

DW Kanaar - 2024 - search.proquest.com
Quantum computing allows for significant speed-up in solving certain practical problems as
compared to classical computing. The current quantum computers are limited by high error …