Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Oracle Separation between Noisy Quantum Polynomial Time and the Polynomial Hierarchy
Nai-Hui Chia, Min-Hsiu Hsieh, Shih-Han Hung +1 more·May 12, 2024
This work investigates the oracle separation between the physically motivated complexity class of noisy quantum circuits, inspired by definitions such as those presented by Chen, Cotler, Huang, and Li (2022). We establish that with a constant error r...
The Algorithm for Solving Quantum Linear Systems of Equations With Coherent Superposition and Its Extended Applications
Qiqing Xia, Qianru Zhu, Huiqin Xie +1 more·May 11, 2024
Many quantum algorithms for attacking symmetric cryptography involve the rank problem of quantum linear equations. In this paper, we first propose two quantum algorithms for solving quantum linear systems of equations with coherent superposition and ...
Distributed exact generalized Grover’s algorithm
Xu Zhou, Xusheng Xu, Shenggen Zheng +1 more·May 11, 2024
Distributed quantum computation has garnered immense attention in the noisy intermediate-scale quantum (NISQ) era, where each computational node necessitates fewer qubits and quantum gates. In this paper, we focus on a generalized search problem invo...
Holonomic swap and controlled-swap gates of neutral atoms via selective Rydberg pumping
C. F. Sun, X. Y. Chen, W. Mu +3 more·May 10, 2024
Holonomic quantum computing offers a promising paradigm for quantum computation due to its error resistance and the ability to perform universal quantum computations. Here, we propose a scheme for the rapid implementation of a holonomic swap gate in ...
Estimating Non-Stabilizerness Dynamics Without Simulating It
Alessio Paviglianiti, Guglielmo Lami, M. Collura +1 more·May 9, 2024
We introduce the Iterative Clifford Circuit Renormalization (ICCR), a novel technique designed to efficiently handle the dynamics of non-stabilizerness (a.k.a. quantum magic) in generic quantum circuits. ICCR iteratively adjusts the starting circuit,...
Chemistry beyond the scale of exact diagonalization on a quantum-centric supercomputer.
Javier Robledo-Moreno, Mario Motta, Holger Haas +14 more·May 8, 2024
A universal quantum computer can simulate diverse quantum systems, with electronic structure for chemistry offering challenging problems for practical use cases around the hundred-qubit mark. Although current quantum processors have reached this size...
Quantum Circuit Ansatz: Patterns of Abstraction and Reuse of Quantum Algorithm Design
Xiaoyu Guo, Takahiro Muta, Jianjun Zhao·May 8, 2024
Quantum computing holds the potential to revolutionize various fields by efficiently tackling complex problems. At its core are quantum circuits, sequences of quantum gates manipulating quantum states. The selection of the right quantum circuit ansat...
Quantum Circuit Optimisation and MBQC Scheduling with a Pauli Tracking Library
Jannis Ruh, S. Devitt·May 7, 2024
We present a software library for the commutation of Pauli operators through quantum Clifford circuits, which is called Pauli tracking. Tracking Pauli operators allows one to reduce the number of Pauli gates that must be executed on quantum hardware....
Scalable Circuit Cutting and Scheduling in a Resource-Constrained and Distributed Quantum System
Shuwen Kan, Zefan Du, Miguel Palma +6 more·May 7, 2024
Despite rapid developments in quantum computing, current systems remain limited in practical applications due to their constrained qubit counts and quality. Technologies such as superconducting, trapped ions, and neutral atom quantum computing are pr...
Transformer models for quantum gate set tomography
King Yiu Yu, Aritra Sarkar, M. Rimbach-Russ +2 more·May 3, 2024
Quantum computation represents a promising frontier in the domain of high-performance computing, blending quantum information theory with practical applications to overcome the limitations of classical computation. This study investigates the challen...
Computational Electromagnetics Meets Spin Qubits: Controlling Noise Effects in Quantum Sensing and Computing
Wenbo Sun, S. Bharadwaj, Runwei Zhou +2 more·May 3, 2024
Solid-state spin qubits have emerged as promising platforms for quantum information. Despite extensive efforts in controlling noise in spin qubit quantum applications, one important but less controlled noise source is near-field electromagnetic fluct...
Distribution of Non-Locality On Quantum Random Circuits
A. Arango, F. Holik, R. Giuntini +2 more·May 2, 2024
In this work we explore how different types of resources are distributed among the states generated by quantum random circuits (QRC). We focus on multipartite non-locality, but we also analyze quantum correlations by appealing to different entangleme...
Digital-analog counterdiabatic quantum optimization with trapped ions
Shubham Kumar, N. N. Hegade, Alejandro Gomez-Cadavid +3 more·May 2, 2024
We introduce a hardware-specific, problem-dependent digital-analog quantum algorithm of a counterdiabatic quantum dynamics tailored for optimization problems. Specifically, we focus on trapped-ion architectures, taking advantage from global Mølmer–Sø...
Experimental aspects of indefinite causal order in quantum mechanics
L. Rozema, T. Strömberg, Huan Cao +3 more·May 1, 2024
In the past decade, the toolkit of quantum information has been expanded to include processes in which the basic operations do not have definite causal relations. Originally considered in the context of the unification of quantum mechanics and genera...
Control landscapes for high-fidelity generation of C-NOT and C-PHASE gates with coherent and environmental driving
A. Pechen, V. Petruhanov, O. Morzhin +1 more·May 1, 2024
High-fidelity generation of two-qubit gates is important for quantum computation, since such gates are components of popular universal sets of gates. Here, we consider the problem of high-fidelity generation of two-qubit C-NOT and C-PHASE (with a det...
An RNN–policy gradient approach for quantum architecture search
Gang Wang, Banghai Wang, Shao-Ming Fei·May 1, 2024
Variational quantum circuits are one of the promising ways to exploit the advantages of quantum computing in the noisy intermediate-scale quantum technology era. The design of the quantum circuit architecture might greatly affect the performance capa...
A Simple Method for Compiling Quantum Stabilizer Circuits
B. Reid·Apr 30, 2024
Stabilizer circuits play an important role in quantum error correction protocols, and will be vital for ensuring fault tolerance in future quantum hardware. While stabilizer circuits are defined on the Clifford generating set, $\{H, S, CX\}$, not all...
Light cone cancellation for variational quantum eigensolver in solving noisy Max-Cut
Xinwei Lee, Xinjian Yan, Ningyi Xie +5 more·Apr 30, 2024
Variational Quantum Eigensolver (VQE) is a quantum-classical hybrid algorithm used to estimate the ground energy of a given Hamiltonian. It consists of a parameterized quantum circuit, which the parameters are optimized using a classical optimizer. W...
A diverse set of two-qubit gates for spin qubits in semiconductor quantum dots
M. Ni, Rong-Long Ma, Zhen-Zhen Kong +11 more·Apr 29, 2024
To realize large-scale quantum information processes, an ideal scheme for two-qubit operations should enable diverse operations with given hardware and physical interaction. However, for spin qubits in semiconductor quantum dots, the common two-qubit...
Architecture for fast implementation of quantum low-density parity-check codes with optimized Rydberg gates
C. Poole, T. M. Graham, M. Perlin +2 more·Apr 29, 2024
We propose an implementation of bivariate bicycle codes (Nature {\bf 627}, 778 (2024)) based on long-range Rydberg gates between stationary neutral atom qubits. An optimized layout of data and ancilla qubits reduces the maximum Euclidean communicatio...