Design of an On-Chip Superconducting Microwave Circulator with Octave Bandwidth

被引：19

作者：

Chapman, Benjamin J. ^{[1
,2
,3
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]}

Rosenthal, Eric, I ^{[1
,2
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]}

Lehnert, K. W. ^{[1
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]}

机构：

[1] NIST, JILA, Boulder, CO 80309 USA

[2] Univ Colorado, Boulder, CO 80309 USA

[3] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[4] Yale Univ, Dept Appl Phys, New Haven, CT 06511 USA

来源：

PHYSICAL REVIEW APPLIED | 2019年 / 11卷 / 04期

基金：

美国国家科学基金会;

关键词：

NON-RECIPROCITY;

D O I：

10.1103/PhysRevApplied.11.044048

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a design for a superconducting, on-chip circulator composed of dynamically modulated transfer switches and delays. Design goals are set for the multiplexed readout of superconducting qubits. Simulations of the device show that it allows for low-loss circulation (insertion loss < 0.35 dB and isolation >20 dB) over an instantaneous bandwidth of 2.3 GHz. This design improves on the bandwidth of previous superconducting circulators by more than an order of magnitude, making it ideal for integration with broadband quantum-limited amplifiers.

引用

页数：12

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