Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Queue-aware Network Control Algorithm with a High Quantum Computing Readiness—Evaluated in Discrete-time Flow Simulator for Fat-Pipe Networks
Arthur Witt·Apr 5, 2024
The emerging technology of quantum computing has the potential to change the way how problems will be solved in the future. This work presents a centralized network control algorithm executable on already existing quantum computer which are based on ...
Engineering Quantum States with Neutral Atoms
Jan Balewski, M. Kornjača, Katherine Klymko +5 more·Apr 5, 2024
Aquila, an analog quantum simulation platform developed by QuEra Computing, supports control of the position and coherent evolution of up to 256 neutral atoms. This study details novel experimental protocols designed for analog quantum simulators tha...
Review on Quantum Walk Computing: Theory, Implementation, and Application
Xiaogang Qiang, Shixin Ma, Haijing Song·Apr 5, 2024
Classical random walk formalism shows a significant role across a wide range of applications. As its quantum counterpart, the quantum walk is proposed as an important theoretical model for quantum computing. By exploiting the quantum effects such as ...
Agnostic Tomography of Stabilizer Product States
Sabee Grewal, Vishnu Iyer, William Kretschmer +1 more·Apr 4, 2024
We define a quantum learning task called agnostic tomography, where given copies of an arbitrary state $ρ$ and a class of quantum states $\mathcal{C}$, the goal is to output a succinct description of a state that approximates $ρ$ at least as well as ...
Self-Testing Graph States Permitting Bounded Classical Communication
Uta Isabella Meyer, Ivan Šupić, Frédéric Grosshans +1 more·Apr 4, 2024
Self-testing identifies quantum states and correlations that exhibit nonlocality, distinguishing them, up to local transformations, from other quantum states. Due to their strong nonlocality, it is known that all graph states can be self-tested in th...
Promatch: Extending the Reach of Real-Time Quantum Error Correction with Adaptive Predecoding
Narges Alavisamani, Suhas Vittal, Ramin Ayanzadeh +2 more·Apr 4, 2024
Fault-tolerant quantum computing relies on Quantum Error Correction (QEC), which encodes logical qubits into data and parity qubits. Error decoding is the process of translating the measured parity bits into types and locations of errors. To prevent ...
Pymablock: An algorithm and a package for quasi-degenerate perturbation theory
Isidora Araya Day, Sebastian Miles, Hugo Kerstens +2 more·Apr 4, 2024
A common technique in the study of complex quantum-mechanical systems is to reduce the number of degrees of freedom in the Hamiltonian by using quasi-degenerate perturbation theory. While the Schrieffer-Wolff transformation achieves this and construc...
Molecular Ground State Simulation by Subspace Restriction and Hund's Rule
Leo H. Chiang, Ching-Jui Lai·Apr 4, 2024
Molecular ground state simulation is a promising application of quantum computing. Nevertheless, this question has been shown as a QMA-complete problem, indicating that its complexity increases with the size of the molecule. To address this challenge...
Quantum aggregation with temporal delay
Nicolò Lo Piparo, W. Munro, K. Nemoto·Apr 4, 2024
Advanced quantum networking systems rely on efficient quantum error correction codes for their optimal realization. The rate at which the encoded information is transmitted is a fundamental limit that affects the performance of such systems. Quantum ...
Implementation of Entropically Secure Encryption: Securing Personal Health Data
Mehmet Huseyin Temel, Boris Škorić, I. Monroy·Apr 4, 2024
Entropically secure encryption (ESE) offers unconditional security with shorter keys compared to the One‐Time Pad. Here, the first implementation of ESE for bulk encryption is presented. The main computational bottleneck for bulk ESE is a multiplicat...
Non-Variational Quantum Combinatorial Optimisation
Tavis Bennett, L. Noakes, Jingbo Wang·Apr 4, 2024
This paper introduces a non-variational quantum algorithm designed to solve a wide range of combinatorial optimisation problems, including constrained and non-binary problems. The algorithm leverages an engineered interference process achieved throug...
Quantum querying based on multicontrolled Toffoli gates for causal Feynman loop configurations and directed acyclic graphs
S. Ram'irez-Uribe, Andr'es E. Renter'ia-Olivo, Germán Rodrigo·Apr 4, 2024
Quantum algorithms are a promising framework for unfolding the causal configurations of multiloop Feynman diagrams, which is equivalent to querying the \textit{directed acyclic graph} (DAG) configurations of undirected graphs in graph theory. In this...
Circuit Knitting Faces Exponential Sampling Overhead Scaling Bounded by Entanglement Cost
M. Jing, Chengkai Zhu, Xin Wang·Apr 4, 2024
Circuit knitting, a method for connecting quantum circuits across multiple processors to simulate nonlocal quantum operations, is a promising approach for distributed quantum computing. While various techniques have been developed for circuit knittin...
Integrability of Goldilocks quantum cellular automata
Logan E. Hillberry, Lorenzo Piroli, Eric Vernier +3 more·Apr 3, 2024
Goldilocks quantum cellular automata (QCA) have been simulated on quantum hardware and produce emergent small-world correlation networks. In Goldilocks QCA, a single-qubit unitary is applied to each qubit in a one-dimensional chain subject to a balan...
Utilizing Quantum Processor for the Analysis of Strongly Correlated Materials
Hengyue Li, Yusheng Yang, Pin Lv +4 more·Apr 3, 2024
This study introduces a systematic approach for analyzing strongly correlated systems by adapting the conventional quantum cluster method to a quantum circuit model. We have developed a more concise formula for calculating the cluster's Green's funct...
Hamiltonian Simulation in the Interaction Picture Using the Magnus Expansion
Kunal Sharma, M. Tran·Apr 3, 2024
We propose an algorithm for simulating the dynamics of a geometrically local Hamiltonian $A$ under a small geometrically local perturbation $\alpha B$. In certain regimes, the algorithm achieves the optimal scaling and outperforms the state-of-the-ar...
Critical properties of weak measurement induced phase transitions in random quantum circuits
Kemal Aziz, Ahana Chakraborty, J. H. Pixley·Apr 3, 2024
The effects of different forms of weak measurements on the nature of the measurement induced phase transition are theoretically studied in hybrid random quantum circuits of qubits. We use a combination of entanglement measures, ancilla purification d...
Surrogate optimization of variational quantum circuits
Erik J Gustafson, Juha Tiihonen, Diana Chamaki +8 more·Apr 3, 2024
Significance Optimization on quantum hardware is required in many applications, including Hamiltonian simulation to quantum machine learning; this entails interesting problems that must be addressed both for noisy near-term and fault-tolerant hardwar...
QDsim: A user-friendly toolbox for simulating large-scale quantum dot devices
Valentina Gualtieri, Charles Renshaw-Whitman, Vinicius Hernandes +1 more·Apr 3, 2024
We introduce QDsim, a Python package tailored for the rapid generation of charge stability diagrams in large-scale quantum dot devices, extending beyond traditional double or triple dots. QDsim is founded on the constant interaction model from which ...
Quantum conjugate gradient method using the positive-side quantum eigenvalue transformation
Kiichiro Toyoizumi, Kaito Wada, Naoki Yamamoto +1 more·Apr 3, 2024
Quantum algorithms are still challenging to solve linear systems of equations on real devices. This challenge arises from the need for deep circuits and numerous ancilla qubits. We introduce the quantum conjugate gradient (QCG) method using the quant...