Papers

Boyi Zhou, L. Yang, Tao Wang +5 more·Jun 16, 2023

Realization of practical superconducting quantum computing requires many qubits of long coherence time. Compared to the commonly used Ta deposited on c-plane sapphire, which occasionally form α-Ta (111) grains and β-tantalum grains, high quality Ta (...

Stefano Mangini·Jun 16, 2023

This Ph.D. thesis provides a comprehensive review of the state-of-the-art in the field of Variational Quantum Algorithms and Quantum Machine Learning, including numerous original contributions. The first chapters are devoted to a brief summary of qua...

Sanjay Vishwakarma, Sai Nandan Morapakula, Srinjoy Ganguly +2 more·Jun 16, 2023

In this tutorial paper, we provide an introduction to the briskly expanding research field of Majorana fermions in topological superconductors. We discuss several aspects of topological superconductivity and the advantages it brings to quantum comput...

Selçuk Çakmak, Murat Kurt, A. Gençten·Jun 16, 2023

This study proposes and construct a primitive quantum arithmetic logic unit (qALU) based on the quantum Fourier transform (QFT). The qALU is capable of performing arithmetic ADD (addition) and logic NAND gate operations. It designs a scalable quantum...

Sam J. Griffiths, D. Browne·Jun 16, 2023

The union-find decoder is a leading algorithmic approach to the correction of quantum errors on the surface code, achieving code thresholds comparable to minimum-weight perfect matching (MWPM) with amortised computational time scaling near-linearly i...

Gözde Üstün, Andrea Morello, Simon Devitt·Jun 15, 2023

A key requirement for an effective Quantum Error Correction (QEC) scheme is that the physical qubits have error rates below a certain threshold. The value of this threshold depends on the details of the specific QEC scheme, and its hardware-level imp...

Ru Yang, Tianren Wang, B. Lu +2 more·Jun 15, 2023

In recent years, researchers have been exploring the applications of noisy intermediate-scale quantum (NISQ) computation in various fields. One important area in which quantum computation can outperform classical computers is the ground state problem...

Alena Chang, Yinxin Wan, G. Xue +1 more·Jun 15, 2023

Low Earth Orbit (LEO) satellites present a compelling opportunity for the establishment of a global quantum information network. However, satellite-based entanglement distribution from a networking perspective has not been fully investigated. Existin...

R. Singleton·Jun 15, 2023

We provide a pedagogical presentation of Shor's factoring algorithm, which is a quantum algorithm for factoring very large numbers (of order of hundreds to thousands of bits) in polynomial time. In contrast, all known classical algorithms for the fac...

Hyeongrak Choi, M. Davis, 'Alvaro G. Inesta +1 more·Jun 15, 2023

We introduce Quantum Tree Networks (QTN), an architecture for hierarchical multi-flow entanglement routing. The network design is a $k$-ary tree where end nodes are situated on the leaves and routers at the internal nodes, with each node connected to...

Li Yu, Jie Xu, Fuqun Wang +1 more·Jun 15, 2023

Instantaneous two-party quantum computation is a computation process with bipartite input and output, in which there are initial shared entanglement, and the nonlocal interactions are limited to simultaneous classical communication in both directions...

Valter Uotila·Jun 14, 2023

Recent advances in quantum computing have led to progress in exploring quantum applications across diverse fields, including databases and data management. This work presents a quantum machine learning model that tackles the challenge of estimating m...

M. Ramezani, M. Nikaeen, F. Farman +2 more·Jun 14, 2023

The problem of efficient multiplication of large numbers has been a long-standing challenge in classical computation and has been extensively studied for centuries. It appears that the existing classical algorithms are close to their theoretical limi...

D. Litinski·Jun 14, 2023

We use Shor's algorithm for the computation of elliptic curve private keys as a case study for resource estimates in the silicon-photonics-inspired active-volume architecture. Here, a fault-tolerant surface-code quantum computer consists of modules w...

Freya Shah, T. Patti, Oriol Rubies-Bigorda +1 more·Jun 14, 2023

Photon-mediated interactions in subwavelength atomic arrays have numerous applications in quantum science. In this manuscript, we explore the potential of three-level quantum emitters, or ``impurities"embedded in a two-dimensional atomic array to ser...

Kyle E. C. Booth·Jun 14, 2023

Due to the limited connectivity of gate model quantum devices, logical quantum circuits must be compiled to target hardware before they can be executed. Often, this process involves the insertion of SWAP gates into the logical circuit, usually increa...

Takahiro Horiba, Soichi Shirai, H. Hirai·Jun 14, 2023

Electronic state calculations using quantum computers are mostly based on the second quantized formulation, which is suitable for qubit representation. Another way to describe electronic states on a quantum computer is based on the first quantized fo...

Alon Kukliansky, Ed Younis, L. Cincio +1 more·Jun 13, 2023

We introduce a domain-specific algorithm for numerical optimization operations used by quantum circuit instantiation, synthesis, and compilation methods. QFactor uses a tensor network formulation together with analytic methods and an iterative local ...

Feiyang Liu, Ka Bian, Fei Meng +2 more·Jun 13, 2023

We design a quantum method for classical information compression that exploits the hidden subgroup quantum algorithm. We consider sequence data in a database with a priori unknown symmetries of the hidden subgroup type. We prove that data with a give...

Franccois Verdeil, Y. Deville·Jun 13, 2023

Quantum process tomography (QPT) methods aim at identifying a given quantum process. The present paper focuses on the estimation of a unitary process. This class is of particular interest because quantum mechanics postulates that the evolution of any...