Collateral Coupling between Superconducting Resonators: Fast High-Fidelity Generation of Qudit-Qudit Entanglement

被引：4
作者：
Rosario P. [1 ]
Santos A.C. [1 ]
Villas-Boas C.J. [1 ]
Bachelard R. [1 ,2 ]
机构：
[1] Departamento de Física, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235 - SP-310, SP, São Carlos
[2] Université Côte d'Azur, CNRS, Institut de Physique de Nice, Valbonne
来源：
Physical Review Applied | 2023年 / 20卷 / 03期
基金：
巴西圣保罗研究基金会;
关键词：
All Open Access; Green;
D O I：
10.1103/PhysRevApplied.20.034036
中图分类号：
学科分类号：
摘要：
Superconducting circuits are highly controllable platforms to manipulate quantum states, which make them particularly promising for quantum information processing. We show here how the existence of a distance-independent interaction between microwave resonators coupled capacitively through a qubit offers an alternative control parameter toward this goal. This interaction is able to induce an idling point between resonant resonators, and its state-dependent nature allows one to control the flow of information between the resonators. The advantage of this scheme over the previous one is demonstrated through the generation of high-fidelity NOON states between the resonators, with a lower number of operations than previous schemes. Beyond superconducting circuits, our proposal could also apply to atomic lattices with clock transitions in optical cavities, for example. © 2023 American Physical Society.
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