让超导量子比特陷入混乱

IF 5.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Quantum Science and Technology Pub Date : 2024-11-28 DOI:10.1088/2058-9565/ad93fb

Jorge Chávez-Carlos, Miguel A Prado Reynoso, Rodrigo G Cortiñas, Ignacio García-Mata, Victor S Batista, Francisco Pérez-Bernal, Diego A Wisniacki and Lea F Santos

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引用次数: 0

摘要

克尔参量振荡器是容错量子计算机的潜在构建模块。它们可以稳定Kerr-cat量子比特，这为编码和操作错误保护的量子信息提供了优势。最近Kerr-cat量子比特的实现利用了transmon超导电路的非线性和压缩驱动。增加非线性可以实现更快的门时间，但是，正如这里所示，也会引起混乱并融化量子位。我们确定了Kerr-cat量子比特的有效区域，并讨论了如何通过实验检测其衰变。参数量子计算的危险区域也是研究驱动超导电路的量子混沌的潜在场所。

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Driving superconducting qubits into chaos

Kerr parametric oscillators are potential building blocks for fault-tolerant quantum computers. They can stabilize Kerr-cat qubits, which offer advantages toward the encoding and manipulation of error-protected quantum information. The recent realization of Kerr-cat qubits made use of the nonlinearity of transmon superconducting circuits and a squeezing drive. Increasing nonlinearities can enable faster gate times, but, as shown here, can also induce chaos and melt the qubit away. We determine the region of validity of the Kerr-cat qubit and discuss how its disintegration could be experimentally detected. The danger zone for parametric quantum computation is also a potential playground for investigating quantum chaos with driven superconducting circuits.

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来源期刊

Quantum Science and Technology Materials Science-Materials Science (miscellaneous)

CiteScore

11.20

自引率

3.00%

发文量

133

期刊介绍： Driven by advances in technology and experimental capability, the last decade has seen the emergence of quantum technology: a new praxis for controlling the quantum world. It is now possible to engineer complex, multi-component systems that merge the once distinct fields of quantum optics and condensed matter physics. Quantum Science and Technology is a new multidisciplinary, electronic-only journal, devoted to publishing research of the highest quality and impact covering theoretical and experimental advances in the fundamental science and application of all quantum-enabled technologies.