18 papers · ranked by Valyu relevance
Tyson Jones, Anna Brown, Ian Bush, Simon C. Benjamin
We introduce QuEST, the Quantum Exact Simulation Toolkit, and compare it to ProjectQ, qHipster and a recent distributed implementation of Quantum++. QuEST is the first open source, hybrid multithreaded and distributed, GPU accelerated simulator of universal quantum circuits. Embodied as a C library, it is designed so…
Yunyan Yao, Liang Xiang, Giuliano Benenti
Quantum computing is an exciting field that uses quantum principles, such as quantum superposition and entanglement, to tackle complex computational problems. Superconducting quantum circuits, based on Josephson junctions, is one of the most promising physical realizations to achieve the long-term goal of building…
G. G. Guerreschi, A. Y. Matsuura
Computational quantum technologies are entering a new phase in which noisy intermediate-scale quantum computers are available, but are still too small to benefit from active error correction. Even with a finite coherence budget to invest in quantum information processing, noisy devices with about 50 qubits are expected…
Viv Kendon
Computational methods are the most effective tools we have besides scientific experiments to explore the properties of complex biological systems. Progress is slowing because digital silicon computers have reached their limits in terms of speed. Other types of computation using radically different architectures…
M.-H. Yung, J. Casanova, A. Mezzacapo, J. McClean + 3 more
'A. Aspuru-Guzik' 'E. Solano'] Over the last few decades, quantum chemistry has progressed through the development of computational methods based on modern digital computers. However, these methods can hardly fulfill the exponentially-growing resource requirements when applied to large quantum systems. As pointed out…
Benjamin A. Cordier, Nicolas P. D. Sawaya, Gian Giacomo Guerreschi, Shannon K. McWeeney
'Shannon K. McWeeney'] Quantum computing holds substantial potential for applications in biology and medicine, spanning from the simulation of biomolecules to machine learning methods for subtyping cancers on the basis of clinical features. This potential is encapsulated by the concept of a quantum advantage, which is…
Zhimin Wang, Zhaoyun Chen, Shengbin Wang, Wendong Li + 3 more
'Guoping Guo' 'Zhiqiang Wei'] Classical simulation of quantum computation is vital for verifying quantum devices and assessing quantum algorithms. We present a new quantum circuit simulator developed on the Sunway TaihuLight supercomputer. Compared with other simulators, the present one is distinguished in two aspects.…
Xiaowei Deng, Shuhong Hao, Hong Guo, Changde Xie + 1 more
Quantum simulation enables one to mimic the evolution of other quantum systems using a controllable quantum system. Quantum harmonic oscillator (QHO) is one of the most important model systems in quantum physics. To observe the transient dynamics of a QHO with high oscillation frequency directly is difficult. We…
Chao Zheng, Antonino Messina
Non-Hermitian (NH) quantum theory has been attracting increased research interest due to its featured properties, novel phenomena, and links to open and dissipative systems. Typical NH systems include PT-symmetric systems, pseudo-Hermitian systems, and their anti-symmetric counterparts. In this work, we generalize the…
Chao Zheng, Jin Tian, Daili Li, Jingwei Wen + 2 more
'Yansong Li'] Besides Hermitian systems, quantum simulation has become a strong tool to investigate non-Hermitian systems, such as PT-symmetric, anti-PT-symmetric, and pseudo-Hermitian systems. In this work, we theoretically investigate quantum simulation of an anti-P-pseudo-Hermitian two-level system in different…
Xiang Zhang, Yangchao Shen, Junhua Zhang, Jorge Casanova + 5 more
'Lucas Lamata' 'Enrique Solano' 'Man-Hong Yung' 'Jing-Ning Zhang' 'Kihwan Kim'] A quantum simulator is an important device that may soon outperform current classical computations. A basic arithmetic operation, the complex conjugate, however, is considered to be impossible to be implemented in such a quantum system due…
Cina Aghamohammadi, John R. Mahoney, James P. Crutchfield
Classical stochastic processes can be generated by quantum simulators instead of the more standard classical ones, such as hidden Markov models. One reason for using quantum simulators has recently come to the fore: they generally require less memory than their classical counterparts. Here, we examine this quantum…
Hans Hon Sang Chan, Richard Meister, Tyson Jones, David P. Tew + 1 more
'Simon C. Benjamin'] First-quantized, grid-based methods for chemistry modeling are a natural and elegant fit for quantum computers. However, it is infeasible to use today’s quantum prototypes to explore the power of this approach because it requires a substantial number of near-perfect qubits. Here, we use exactly…
E. Schuyler Fried, Nicolas P. D. Sawaya, Yudong Cao, Ian D. Kivlichan + 3 more
'Ian D. Kivlichan' 'Jhonathan Romero' 'Alán Aspuru-Guzik' 'Itay Hen'] Classical simulation of quantum computation is necessary for studying the numerical behavior of quantum algorithms, as there does not yet exist a large viable quantum computer on which to perform numerical tests. Tensor network (TN) contraction is an…
Anderson Avila, Helida Santos, Anderson Cruz, Samuel Xavier-de-Souza + 5 more
'Giancarlo Lucca' 'Bruno Moura' 'Adenauer Yamin' 'Renata Reiser' 'Xi Chen'] This paper presents the HybriD-GM model conception, from modeling to consolidation. The D-GM environment is also extended, providing efficient parallel executions for quantum computing simulations, targeted to hybrid architectures considering…
Niklas Johansson, Jan-Åke Larsson
Query complexity is a common tool for comparing quantum and classical computation, and it has produced many examples of how quantum algorithms differ from classical ones. Here we investigate in detail the role that oracles play for the advantage of quantum algorithms. We do so by using a simulation framework, Quantum…
U. Alvarez-Rodriguez, M. Sanz, L. Lamata, E. Solano
We present the first experimental realization of a quantum artificial life algorithm in a quantum computer. The quantum biomimetic protocol encodes tailored quantum behaviors belonging to living systems, namely, self-replication, mutation, interaction between individuals, and death, into the cloud quantum computer IBM…
Swagat Kumar, Colin Michael Wilmott
The quantum imaginary time evolution (QITE) methodology was developed to overcome a critical issue as regards non-unitarity in the implementation of imaginary time evolution on a quantum computer. QITE has since been used to approximate ground states of various physical systems. In this paper, we demonstrate a…