Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
An architecture for two-qubit encoding in neutral ytterbium-171 atoms
Zhubing Jia, W. Huie, Lintao Li +8 more·Feb 20, 2024
We present an architecture for encoding two qubits within the optical “clock” transition and nuclear spin-1/2 degree of freedom of neutral ytterbium-171 atoms. Inspired by recent high-fidelity control of all pairs of states within this four-dimension...
KetGPT - Dataset Augmentation of Quantum Circuits using Transformers
Boran Apak, Medina Bandic, Aritra Sarkar +1 more·Feb 20, 2024
Quantum algorithms, represented as quantum circuits, can be used as benchmarks for assessing the performance of quantum systems. Existing datasets, widely utilized in the field, suffer from limitations in size and versatility, leading researchers to ...
All You Need is pi: Quantum Computing with Hermitian Gates
Ben Zindorf, Sougato Bose·Feb 19, 2024
Universal gate sets for quantum computation, when single and two qubit operations are accessible, include both Hermitian and non-Hermitian gates. Here we utilize the fact that any single-qubit operator may be implemented as two Hermitian gates, and...
The simulation of distributed quantum algorithms
Sreraman Muralidharan·Feb 16, 2024
Distributed quantum computing (DQC) provides a way to scale quantum computers using multiple quantum processing units (QPU) connected through quantum communication links. In this paper, we have built a distributed quantum computing simulator and used...
Universal Quantum Computing with Field-Mediated Unruh--DeWitt Qubits
Eric W. Aspling, Michael J. Lawler·Feb 15, 2024
A set of universal quantum gates is a vital part of the theory of quantum computing, but is absent in the developing theory of Relativistic Quantum Information (RQI). Yet, the Unruh--DeWitt (UDW) detector formalism can be elevated to unitary gates be...
Lattice Hamiltonians and stray interactions within quantum processors
Xuexin Xu, Manabputra, Chlo'e Vignes +2 more·Feb 14, 2024
Developing Hamiltonian models for quantum processors with many qubits on the same chip is crucial for advancing quantum computing technologies. Stray couplings between qubits lead to errors in gate operations. This study underscores the importance of...
Digital Quantum Simulation of a (1+1)D SU(2) Lattice Gauge Theory with Ion Qudits
G. Calajó, G. Magnifico, C. Edmunds +3 more·Feb 12, 2024
We present a quantum simulation strategy for a (1+1)-dimensional SU(2) non-Abelian lattice gauge theory with dynamical matter, a hardcore-gluon Hamiltonian Yang-Mills, tailored to a six-level trapped-ion-qudit quantum processor, as recently experimen...
Encoding Majorana codes
Maryam Mudassar, Riley W. Chien, Daniel Gottesman·Feb 12, 2024
To implement a quantum error correction protocol, we first need a scheme to prepare our state in the correct subspace of the code, and this can be done using a unitary encoding circuit. Majorana codes are special since any gates that transform such c...
Variational protocols for emulating digital gates using analog control with always-on interactions
C. Chevallier, J. Vovrosh, J. de Hond +3 more·Feb 12, 2024
We design variational pulse sequences tailored for neutral atom quantum simulators and show that we can engineer layers of single-qubit and multi-qubit gates. As an application, we discuss how the proposed method can be used to perform refocusing alg...
Full Quantum Process Tomography of a Universal Entangling Gate on an IBM’s Quantum Computer
M. AbuGhanem·Feb 10, 2024
Characterizing quantum dynamics is critical in quantum physics, quantum information science, and computation, where the precision of quantum gates plays a key role. We present a comprehensive experimental analysis of the SQSCZ gate–a novel universal ...
Challenges and opportunities in the supervised learning of quantum circuit expectation values.
S. Cantori, S. Pilati·Feb 7, 2024
Recently, deep neural networks have been proven capable of predicting output expectation values of certain random quantum circuits via a supervised learning approach. Here we investigate the potential of this possible approach to the emulation of qua...
Batched Line Search Strategy for Navigating through Barren Plateaus in Quantum Circuit Training
Jakab N'adori, Gregory Morse, Barna Fulop Vill'am +3 more·Feb 7, 2024
Variational quantum algorithms are viewed as promising candidates for demonstrating quantum advantage on near-term devices. These approaches typically involve the training of parameterized quantum circuits through a classical optimization loop. Howev...
Quantum circuit for multi-qubit Toffoli gate with optimal resource
Junhong Nie, Wei Zi, Xiaoming Sun·Feb 7, 2024
Resource consumption is an important issue in quantum information processing, particularly during the present NISQ era. In this paper, we investigate resource optimization of implementing multiple controlled operations, which are fundamental building...
Sequential adiabatic generation of chiral topological states
Xie Chen, M. Hermele, David T. Stephen·Feb 5, 2024
In previous work, it was shown that non-trivial gapped states can be generated from a product state using a sequential quantum circuit. Explicit circuit constructions were given for a variety of gapped states at exactly solvable fixed points. In th...
Bosehedral: Compiler Optimization for Bosonic Quantum Computing
Junyu Zhou, Yuhao Liu, Yunong Shi +2 more·Feb 3, 2024
Bosonic quantum computing, based on the infinite-dimensional qumodes, has shown promise for various practical applications that are classically hard. However, the lack of compiler optimizations has hindered its full potential. This paper introduces B...
Benchmarking the algorithmic performance of near-term neutral atom processors
K. McInroy, N. Pearson, J. Pritchard·Feb 3, 2024
Neutral atom quantum processors provide a viable route to scalable quantum computing, with recent demonstrations of high-fidelity and parallel gate operations and initial implementation of quantum algorithms using both physical and logical qubit enco...
Comparative study of quantum error correction strategies for the heavy-hexagonal lattice
C'esar Benito, Esperanza L'opez, Borja Peropadre +1 more·Feb 3, 2024
Topological quantum error correction is a milestone in the scaling roadmap of quantum computers, which targets circuits with trillions of gates that would allow running quantum algorithms for real-world problems. The square-lattice surface code has b...
Efficient Implementation of Discrete-Time Quantum Walks on Quantum Computers
Luca Razzoli, Gabriele Cenedese, M. Bondani +1 more·Feb 2, 2024
Quantum walks have proven to be a universal model for quantum computation and to provide speed-up in certain quantum algorithms. The discrete-time quantum walk (DTQW) model, among others, is one of the most suitable candidates for circuit implementat...
Mitigating Errors on Superconducting Quantum Processors Through Fuzzy Clustering
H. G. Ahmad, Roberto Schiattarella, P. Mastrovito +10 more·Feb 2, 2024
Quantum utility is severely limited in superconducting quantum hardware until now by the modest number of qubits and the relatively high level of control and readout errors, due to the intentional coupling with the external environment required for m...
Single-modulated-pulse two-qubit gates for Rydberg atoms with noncyclic geometric control
Zi-Yuan Chen, Jianwu Liang, Zhao-Xin Fu +7 more·Feb 2, 2024
Arrays of neutral atoms have emerged as promising platforms for quantum computing. Realization of high-fidelity two-qubit gates with robustness is currently a significant important task for large-scale operations. In this paper, we present a convenie...