Quantum Computational Advantage via Contextual Measurements
通过上下文测量获得量子计算优势
基本信息
- 批准号:2310567
- 负责人:
- 金额:$ 27.51万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2023
- 资助国家:美国
- 起止时间:2023-09-01 至 2026-08-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Information processing devices, like computers, have become ubiquitous and indispensable in our modern life. A new promising paradigm, called quantum information science (QIS), takes advantage of microscopic quantum states, for instance spins of electrons, to encode information. Counterintuitive quantum effects, such as superposition and quantum correlation called entanglement, enable us to process information with shades of gray beyond the conventional black-or-white (so-called 0-or-1) logic, and to attain drastic improvements over conventional devices. The progress of QIS also enables us to start manipulating quantum many-body systems and utilizing artificially synthetic quantum systems for quantum computation and simulation. While quantum control of the register of several qubits is feasible in several physical architectures, there remain formidable challenges, including how to build macroscopic entanglement robustly with well-scalable control, and how to achieve quantum simulation of complex quantum systems beyond possible classical simulation. It has been recently discovered that strongly frustrated quantum spin systems which manifest certain symmetries and topological phenomena possess intrinsic capability as a quantum computer. Through this concrete example, the project seeks a deep connection between macroscopic quantum orders and quantum advantage in computation and simulation, by utilizing mid-circuit measurements which emerge as new capacity of noisy intermediate-scale quantum (NISQ) prototype computers. In a general sense, the research will contribute to promote the progress of science, primarily the knowledge base of quantum information science, and to train future scientists in this highly interdisciplinary field. A fundamental interplay between entanglement and measurement lies at the heart of QIS. While the complexity of entanglement represents a uniquely quantum resource, its characteristic nonclassical features only reveal themselves through measurement. From Bell’s theorem on nonlocality (or more generally contextuality) to recent quantum simulations of the boson-sampling problem, most landmark results of QIS have relied upon innovative means of balancing these two contrasting ingredients to great practical effect. The framework of measurement-based quantum computation (MBQC) is convenient to study such an interplay and the origin of quantum speed-up in computation and simulation. On one hand, a symmetry-protected topological order (SPTO), such as the ground states of quantum spin systems with geometrically frustrated interactions which exhibit exotic magnetism of quantum spin liquid, not only realizes many-body entanglement of interest but also has been a recent target of quantum simulation. On the other hand, mid-circuit measurements emerge as new capacity of NISQ computers. While it is widely known that mid-circuit measurements and adaptations based on measurement outcomes are crucial for quantum error correction, it is less understood how measurements can empower quantum computation, particularly when quantum resources are limited as in the NISQ era. The project deepens understanding of the scenarios for quantum computational advantage, by extending a class of many-body entanglement through SPTO, contextual observables of measurements, and causal relations among measurements. Broadly, the project cross-fertilizes further two research fields, QIS and quantum many-body physics, timely at the coming age of quantum simulation when quantum many-body physics suggests many problems which quantum computers should be more efficient to solve than conventional computers.This project is jointly funded by the QIS program in the Division of Physics and the Established Program to Stimulate Competitive Research (EPSCoR).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
信息处理设备,如计算机,已经变得无处不在,在我们的现代生活中不可或缺。一种新的有前途的范式,称为量子信息科学(QIS),利用微观量子态,例如电子的自旋,来编码信息。反直觉的量子效应,如叠加和称为纠缠的量子关联,使我们能够处理传统黑白(所谓的0或1)逻辑之外的灰色阴影信息,并实现对传统设备的重大改进。QIS的进展也使我们能够开始操纵量子多体系统,并利用人工合成的量子系统进行量子计算和模拟。虽然多个量子比特寄存器的量子控制在几种物理结构中是可行的,但仍然存在着巨大的挑战,包括如何以良好的可扩展控制来稳健地建立宏观纠缠,以及如何在可能的经典模拟之外实现复杂量子系统的量子模拟。最近发现,表现出一定对称性和拓扑现象的强受挫量子自旋系统具有作为量子计算机的内在能力。通过这个具体的例子,该项目利用作为噪声中尺度量子(NISQ)原型计算机新能力出现的电路中测量,在计算和模拟中寻求宏观量子有序和量子优势之间的深层联系。从一般意义上讲,这项研究将有助于促进科学的进步,主要是量子信息科学的知识基础,并在这个高度交叉的领域培养未来的科学家。纠缠和测量之间的根本相互作用是QIS的核心。虽然纠缠的复杂性代表了一种独特的量子资源,但其特有的非经典特征只有通过测量才能揭示出来。从贝尔关于非局域性(或更广泛地说是上下文)的定理到最近对玻色子采样问题的量子模拟,QIS的大多数里程碑式的结果都依赖于平衡这两个截然不同的成分的创新方法,从而产生了巨大的实际效果。基于测量的量子计算(MBQC)的框架便于在计算和模拟中研究这种相互作用和量子加速的来源。一方面,对称保护的拓扑有序(SPTO),例如具有几何受阻相互作用的量子自旋系统的基态,表现出量子自旋液体的奇特磁性,不仅实现了感兴趣的多体纠缠,也成为量子模拟的最新目标。另一方面,电路中测量作为NISQ计算机的新容量出现。虽然众所周知,电路中的测量和基于测量结果的适配对于量子误差校正至关重要,但人们对测量如何支持量子计算知之甚少,特别是在量子资源有限的情况下,如NISQ时代。该项目通过SPTO扩展了一类多体纠缠,测量的上下文可观测性,以及测量之间的因果关系,加深了对量子计算优势场景的理解。总的来说,该项目进一步交叉融合了量子信息系统和量子多体物理这两个研究领域,适时地在即将到来的量子模拟时代,量子多体物理提出了许多量子计算机应该比传统计算机更有效地解决的问题。该项目由物理部的量子信息系统计划和既定的刺激竞争研究计划(EPSCoR)联合资助。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Akimasa Miyake其他文献
Universal resources for measurement-based quantum computation.
基于测量的量子计算的通用资源。
- DOI:
- 发表时间:
2006 - 期刊:
- 影响因子:8.6
- 作者:
M. Van den Nest;Akimasa Miyake;W. Dür;H. Briegel - 通讯作者:
H. Briegel
Hardness results for decoding the surface code with Pauli noise
使用泡利噪声解码表面代码的硬度结果
- DOI:
- 发表时间:
2023 - 期刊:
- 影响因子:0
- 作者:
Alex Fischer;Akimasa Miyake - 通讯作者:
Akimasa Miyake
Akimasa Miyake的其他文献
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{{ truncateString('Akimasa Miyake', 18)}}的其他基金
EAGER-QAC-QSA: Variational quantum algorithms for transcorrelated electronic-structure Hamiltonians
EAGER-QAC-QSA:互相关电子结构哈密顿量的变分量子算法
- 批准号:
2037832 - 财政年份:2020
- 资助金额:
$ 27.51万 - 项目类别:
Standard Grant
Symmetry, Geometry, and Topology of Quantum Many-Body States for Quantum Computation
用于量子计算的量子多体态的对称性、几何和拓扑
- 批准号:
1915011 - 财政年份:2019
- 资助金额:
$ 27.51万 - 项目类别:
Standard Grant
Harnessing Symmetry-Protected Topological Orders for Quantum Computation
利用对称保护的拓扑序进行量子计算
- 批准号:
1620651 - 财政年份:2016
- 资助金额:
$ 27.51万 - 项目类别:
Continuing Grant
Taming Quantum Many-Body Systems for Quantum Information
驯服量子多体系统以获取量子信息
- 批准号:
1314955 - 财政年份:2013
- 资助金额:
$ 27.51万 - 项目类别:
Continuing Grant
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