Realization of high-fidelity CZ gate based on a double-transmon coupler

R Li, K Kubo, Y Ho, Z Yan, Y Nakamura, H Goto - Physical Review X, 2024 - APS
Striving for higher gate fidelity is crucial not only for enhancing existing noisy intermediate-
scale quantum devices, but also for unleashing the potential of fault-tolerant quantum …

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 …

Floquet analysis of frequency collisions

K Heya, M Malekakhlagh, S Merkel, N Kanazawa… - Physical Review …, 2024 - APS
Implementation of high-fidelity gate operations on integrated-qubit systems is vital for fault-
tolerant quantum computation. Qubit-frequency allocation is an essential part of improving …

Sparse Non-Markovian Noise Modeling of Transmon-Based Multi-Qubit Operations

Y Oda, K Schultz, L Norris, O Shehab… - arXiv preprint arXiv …, 2024 - arxiv.org
The influence of noise on quantum dynamics is one of the main factors preventing current
quantum processors from performing accurate quantum computations. Sufficient noise …

High-fidelity gates using a fixed coupler driven by two microwave pulses

P Xu, H Zhang, S Wu - arXiv preprint arXiv:2404.17824, 2024 - arxiv.org
Attaining high-fidelity two-qubit gates represents a pivotal quantum operation for the
realization of large-scale quantum computation and simulation. In this study, we propose a …

Microwave-activated two-qubit gates for fixed-coupling and fixed-frequency transmon qubits

L Jiang, P Xu, S Wu, JA Sun, FQ Dou - arXiv preprint arXiv:2410.07817, 2024 - arxiv.org
All-microwave control of fixed-frequency superconducting quantum systems offers the
potential to reduce control circuit complexity and increase system coherence. Nevertheless …

超导量子计算核心器件

郑文, 于扬 - 物理, 2023 - wuli.iphy.ac.cn
算力是数字经济时代新的生产力. 量子计算基于量子力学的规律进行计算,
人们普遍相信它可以在不久的将来在某些问题上完成经典计算机所无法完成的计算任务 …

New Design of three-qubit system with three transmons and a single fixed-frequency resonator coupler

J Kang, C Kim, Y Kim, Y Kwon - arXiv preprint arXiv:2412.15629, 2024 - arxiv.org
The transmon, which has a short gate time and remarkable scalability, is the most commonly
utilized superconducting qubit, based on the Cooper pair box as a qubit or coupler in …

The Josephson-Based Qubit

DK Ferry - Quantum Information in the Nanoelectronic World, 2024 - Springer
As was discussed in Sect. 1.3, many (if not most) of the commercial efforts in quantum
computing (and the other areas) lie with superconductivity and the use of Josephson …

[HTML][HTML] Superconducting Devices: From Quantum Computing to Energy Transmission

B Hassan - 2024 - intechopen.com
Superconducting devices, leveraging the unique properties of zero resistance and the
Meissner effect, are transforming diverse technological fields. This chapter explores their …