结合多路门读出和隔离CMOS量子点阵列

IF 14.7 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Pierre Hamonic, Martin Nurizzo, Jayshankar Nath, Matthieu C. Dartiailh, Victor Elhomsy, Mathis Fragnol, Biel Martinez, Pierre-Louis Julliard, Bruna Cardoso Paz, Mathilde Ouvrier-Buffet, Jean-Baptiste Filippini, Benoit Bertrand, Heimanu Niebojewski, Christopher Bäuerle, Maud Vinet, Franck Balestro, Tristan Meunier, Matias Urdampilleta
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引用次数: 0

摘要

半导体量子点阵列是实现基于自旋纠错的大量量子比特量子计算的理想平台。然而,由于可能的电荷配置数量的差异以及大足迹电荷传感器的有限灵敏度,在不断增长的量子点阵列中实现每个点的单自旋占用是非常复杂的。因此,为了扩大基于自旋的架构,我们必须改变读取和控制单个电荷的方式。在这里,我们通过结合两种方法,演示了在晶圆制造阵列中每个点的单自旋占用。1/将有限数量的电子装入量子点阵列;通过将阵列与储层隔离来简化静电调谐。2/在没有电荷传感器或储层的情况下,部署基于多路栅极的反射计来分散探测电荷隧穿和自旋态。我们用嵌入式多路读出器探测的隔离阵列可以很容易地进行静电调谐。因此,对于基于自旋的量子架构来说,它们是一种可行的、可扩展的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Combining multiplexed gate-based readout and isolated CMOS quantum dot arrays

Combining multiplexed gate-based readout and isolated CMOS quantum dot arrays

Semiconductor quantum dot arrays are a promising platform to perform spin-based error-corrected quantum computation with large numbers of qubits. However, due to the diverging number of possible charge configurations combined with the limited sensitivity of large-footprint charge sensors, achieving single-spin occupancy in each dot in a growing quantum dot array is exceedingly complex. Therefore, to scale-up a spin-based architecture we must change how individual charges are readout and controlled. Here, we demonstrate single-spin occupancy of each dot in a foundry-fabricated array by combining two methods. 1/ Loading a finite number of electrons into the quantum dot array; simplifying electrostatic tuning by isolating the array from the reservoirs. 2/ Deploying multiplex gate-based reflectometry to dispersively probe charge tunneling and spin states without charge sensors or reservoirs. Our isolated arrays probed by embedded multiplex readout can be readily electrostatically tuned. They are thus a viable, scalable approach for spin-based quantum architectures.

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来源期刊
Nature Communications
Nature Communications Biological Science Disciplines-
CiteScore
24.90
自引率
2.40%
发文量
6928
审稿时长
3.7 months
期刊介绍: Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.
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