Architectures for Multinode Superconducting Quantum Computers

Ang, James S.; Carini, G.; Chen, Yanzhu; Chuang, Isaac L.; DeMarco, Michael Austin; Economou, Sophia E.; Eickbusch, Alec; Faraon, Andrei; Fu, Kai-Mei C.; Girvin, S. M.; Hatridge, Michael; Houck, Andrew; Hilaire, Paul; Krsulich, Kevin; Li, Ang; Liu, Chenxu; Liu, Yuan; Martonosi, Margaret; McKay, David; Misewich, James A.; Ritter, Mark A.; Schoelkopf, Robert; Stein, Samuel A.; Sussman, Sara; Tang, Hong X.; Tang, Wei; Tomesh, Teague; Tubman, Norm M.; Wang, Chen; Wiebe, Nathan; Yao, Yongxin; Yost, Dillon C.; Zhou, Yiyu

doi:10.48550/arxiv.2212.06167

Cited by 10 publications

(8 citation statements)

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“…Being fully compatible with superconducting qubits in a millikelvin environment, such a device will facilitate the integration of remote superconducting quantum processors into a single coherent optical quantum network. This is relevant not only for modularization and scaling (40,41) but also for efficient crossplatform verification of classically intractable quantum processor results (42).…”

Section: Discussionmentioning

confidence: 99%

Entangling microwaves with light

Sahu

Qiu

Hease

et al. 2023

Science

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Quantum entanglement is a key resource in currently developed quantum technologies. Sharing this fragile property between superconducting microwave circuits and optical or atomic systems would enable new functionalities, but this has been hindered by an energy scale mismatch of >10 4 and the resulting mutually imposed loss and noise. In this work, we created and verified entanglement between microwave and optical fields in a millikelvin environment. Using an optically pulsed superconducting electro-optical device, we show entanglement between propagating microwave and optical fields in the continuous variable domain. This achievement not only paves the way for entanglement between superconducting circuits and telecom wavelength light, but also has wide-ranging implications for hybrid quantum networks in the context of modularization, scaling, sensing, and cross-platform verification.

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Section: Discussionmentioning

confidence: 99%

Entangling microwaves with light

Sahu

Qiu

Hease

et al. 2023

Science

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“…Being fully compatible with superconducting qubits in a millikelvin environment such a device will facilitate the integration of remote superconducting quantum processors into a single coherent optical quantum network. This is not only relevant for modularization and scaling [33,34], but also for efficient cross-platform verification of classically intractable quantum processor results [35]. diagonal covariance matrix elements from the calibrated measurement record,…”

Section: Discussionmentioning

confidence: 99%

Entangling microwaves with optical light

Sahu¹,

Qiu²,

Hease³

et al. 2023

Preprint

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“…On a larger scale, Ang et al [48] have developed architectures for superconducting modular, distributed, or multinode quantum computers (MNQC), employing a 'co-design' inspired approach to quantify overall MNQC performance in terms of hardware models of internode links, entanglement distillation, and local architecture. In the particular case of superconducting MNQCs with microwave-to-optical interconnects, Ang et al [48], describe how compilers and software should optimize the balance between local gates and internode gates, discuss when noisy quantum internode links have an advantage over purely classical links, and introduce a research roadmap for the realization of early MNQCs. This roadmap illustrates potential improvements to the hardware and software of MNQCs and outlines criteria for evaluating the improvement landscape, from progress in entanglement generation to the use of quantum memory in entanglement distillation and dedicated algorithms such as distributed quantum phase estimation.…”

Section: Hybrid Distributed Computingmentioning

confidence: 99%

“…This perspective article can be looked upon as a self-contained second part of a research and review paper [1] that stopped short at the beginning of the current engineering era of scaling up devices and building quantum computing ecosystems. The purpose is to focus on addressing the quite dramatic development during the subsequent five years, trying to "predict the future" based on current visions, roadmaps, efforts and investments that aim for the next ten years [46][47][48], outlining a sustainable quantum evolution that hopefully survives the quantum hype [49,50]. To be able to do so in this brief article, we will frequently refer to [1] and to recent reviews for basic background, technology, and methods.…”

Section: Introductionmentioning

confidence: 99%

Quantum information processing with superconducting circuits: a perspective

Wendin¹

2023

Preprint

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The last five years have seen a dramatic evolution of platforms for quantum computing, taking the field from physics experiments to quantum hardware and software engineering. Nevertheless, despite this progress of quantum processors, the field is still in the noisy intermediate-scale quantum (NISQ) regime, seriously limiting the performance of software applications. Key issues involve how to achieve quantum advantage in useful applications for quantum optimization and materials science, connected to the concept of quantum supremacy first demonstrated by Google in 2019. In this article we will describe recent work to establish relevant benchmarks for quantum supremacy and quantum advantage, present recent work on applications of variational quantum algorithms for optimization and electronic structure determination, discuss how to achieve practical quantum advantage, and finally outline current work and ideas about how to scale up to competitive quantum systems.

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Architectures for Multinode Superconducting Quantum Computers

Cited by 10 publications

References 0 publications

Entangling microwaves with light

Entangling microwaves with light

Entangling microwaves with optical light

Quantum information processing with superconducting circuits: a perspective

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