Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Quantum Speed Limit and Quantum Thermodynamic Uncertainty Relation under Feedback Control
H. Yunoki, Y. Hasegawa·Feb 13, 2025
Fundamental trade-off relations, such as quantum speed limit and quantum thermodynamic uncertainty relation, describe the performance limits of quantum systems by imposing that improvements in speed or precision necessitate a substantial thermodynami...
Implementation and Analysis of Regev's Quantum Factorization Algorithm
Przemyslaw Pawlitko, Natalia Mo'cko, Marcin Niemiec +1 more·Feb 13, 2025
Quantum computing represents a significant advancement in computational capabilities. Of particular concern is its impact on asymmetric cryptography through, notably, Shor's algorithm and the more recently developed Regev's algorithm for factoring co...
CV4Quantum: Reducing the Sampling Overhead in Probabilistic Error Cancellation Using Control Variates
P. Shyamsundar, Wern Yeong·Feb 12, 2025
Quasiprobabilistic decompositions (QPDs) play a key role in maximizing the utility of near-term quantum hardware. For example, Probabilistic Error Cancellation (PEC) (an error mitigation technique) and circuit cutting (which enables large quantum com...
Adiabatic quantum unstructured search in parallel
Sean A. Adamson, P. Wallden·Feb 12, 2025
We present an optimized adiabatic quantum schedule for unstructured search building on the original approach of Roland and Cerf [Phys. Rev. A 65, 042308 (2002)]. Our schedule adiabatically varies the Hamiltonian even more rapidly at the endpoints of ...
Computing Efficiently in QLDPC Codes
Alexander J. Malcolm, Andrew N. Glaudell, Patricio Fuentes +10 more·Feb 11, 2025
It is the prevailing belief that quantum error correcting techniques will be required to build a utility-scale quantum computer able to perform computations that are out of reach of classical computers. The QECCs that have been most extensively studi...
Practical classical error correction for parity-encoded spin systems
Yoshihiro Nambu·Feb 11, 2025
Quantum annealing (QA) has emerged as a promising candidate for fast solvers for combinatorial optimization problems (COPs) and has attracted the interest of many researchers. Since COP is logically encoded in the Ising interaction among spins, its r...
Joint Cutting for Hybrid Schrödinger-Feynman Simulation of Quantum Circuits
Laura S. Herzog, Lukas Burgholzer, Christian Ufrecht +2 more·Feb 10, 2025
Despite the continuous advancements in size and robustness of real quantum devices, reliable large-scale quantum computers are not yet available. Hence, classical simulation of quantum algorithms remains crucial for testing new methods and estimating...
Evaluating the performance of quantum processing units at large width and depth
J. A. Montañez-Barrera, K. Michielsen, David E. Bernal Neira·Feb 10, 2025
Quantum computers have now surpassed classical simulation limits, yet noise continues to limit their practical utility. As the field shifts from proof-of-principle demonstrations to early deployments, there is no standard method for meaningfully and ...
Hamiltonian formulations of centroid-based clustering
Myeonghwan Seong, D. Park·Feb 10, 2025
Clustering is a fundamental task in data science that aims to group data based on their similarities. However, defining similarity is often ambiguous, making it challenging to determine the most appropriate objective function for a given dataset. Tra...
Compact quantum dot models for analog microwave co-simulation
L. Peri, A. Gomez-Saiz, Christopher J B Ford +1 more·Feb 10, 2025
Scalable solid-state quantum computers will require integration with analog and digital electronics. Efficiently simulating the quantum-classical electronic interface is hence of paramount importance. Here, we present Verilog-A compact models with a ...
Quantum Computing Based Design of Multivariate Porous Materials
Shinyoung Kang, Younghun Kim, Jihan Kim·Feb 10, 2025
Multivariate (MTV) porous materials exhibit unique structural complexities based on their diverse spatial arrangements of multiple building block combinations. These materials possess potential synergistic functionalities that exceed the sum of their...
Fully optimised variational simulation of a dynamical quantum phase transition on a trapped-ion quantum computer
Lesley Gover, Vinul Wimalaweera, Fariha Azad +3 more·Feb 10, 2025
We time-evolve a translationally invariant quantum state on the Quantinuum H1-1 trapped-ion quantum processor, studying the dynamical quantum phase transition of the transverse field Ising model. This physics requires a delicate cancellation of phase...
Classical post-processing approach for quantum amplitude estimation
Yongdan Yang, Ruyu Yang·Feb 8, 2025
We propose an approach for quantum amplitude estimation (QAE) designed to enhance computational efficiency while minimizing the reliance on quantum resources. Our method leverages quantum computers to generate a sequence of signals, from which the qu...
Currency Arbitrage Optimization using Quantum Annealing, QAOA and Constraint Mapping
Sangram Deshpande, Elin Ranjan Das, F. Mueller·Feb 8, 2025
Currency arbitrage capitalizes on price discrepancies in currency exchange rates between markets to produce profits with minimal risk. By employing a combinatorial optimization problem, one can ascertain optimal paths within directed graphs, thereby ...
Efficient learning and optimizing non-Gaussian correlated noise in digitally controlled qubit systems
Wenzheng Dong, Yuanlong Wang, Muhammad Qasim Khan·Feb 8, 2025
Precise qubit control in the presence of spatio-temporally correlated noise is pivotal for transitioning to fault-tolerant quantum computing. Generically, such noise can also have non-Gaussian statistics, which hampers existing non-Markovian noise sp...
Gaussian Models to Non-Gaussian Realms of Quantum Photonic Simulators
D. D. K. Wayo, Rodrigo Alves Dias, Masoud Darvish Ganji +2 more·Feb 7, 2025
Quantum photonic simulators have emerged as indispensable tools for modeling and optimizing quantum photonic circuits, bridging the gap between theoretical models and experimental implementations. This review explores the landscape of photonic quantu...
Efficient Quantum Optimization via Dynamical Simulation
Ahmet Burak Catli, Sophia Simon, Nathan Wiebe·Feb 6, 2025
We provide several quantum algorithms for continuous optimization that do not require gradient estimation. Instead, we encode the optimization problem into the dynamics of a physical system and coherently simulate the time evolution. We focus on the ...
Lattice stitching by eigenvector continuation for Holstein polaron
E. Torabian, R. Krems·Feb 6, 2025
Simulations of lattice particle - phonon systems are fundamentally restricted by the exponential growth of the number of quantum states with the lattice size. Here, we demonstrate an algorithm that constructs the lowest eigenvalue and eigenvector for...
Jet evolution in a quantum computer: quark and gluon dynamics
N. F. Castro, J. G. Milhano, Maria Gabriela Jordão Oliveira·Feb 5, 2025
The intrinsic quantum nature of jets and the Quark-Gluon Plasma makes the study of jet quenching a promising candidate to benefit from quantum computing power. Standing as a precursor of the full study of this phenomenon, we study the propagation of ...
The Thermodynamic Cost of Ignorance: Thermal State Preparation with One Ancilla Qubit
Matthew Hagan, Nathan Wiebe·Feb 5, 2025
In this work we investigate a model of thermalization wherein a single ancillary qubit randomly interacts with the system to be thermalized. This not only sheds light on the emergence of Gibbs states in nature, but also provides a routine for prepari...