Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
The Quantum Cram\'er-Rao lower bound (Why quantum computers won't work I)
L. McGuinness·Mar 8, 2025
Quantum information science currently poses a troubling contradiction. It can be summarized as: (1) To factor efficiently, quantum computers must perform exponentially precise energy estimation. (2) Exponentially precise energy estimation is impossib...
HIVQE: Handover Iterative Variational Quantum Eigensolver for Efficient Quantum Chemistry Calculations
Aidan Pellow-Jarman, Shane McFarthing Doo, Hyung Kang +6 more·Mar 8, 2025
A novel hybrid quantum-classical approach has been developed to efficiently address the multireference quantum chemistry problem. The Handover Iterative Variational Quantum Eigensolver (HiVQE) is designed to accurately estimate ground-state wavefunct...
QAOA in Quantum Datacenters: Parallelization, Simulation, and Orchestration
Amana Liaqat, Ahmed Darwish, Adrian Roman +1 more·Mar 8, 2025
Scaling quantum computing requires networked systems, leveraging HPC for distributed simulation now and quantum networks in the future. Quantum datacenters will be the primary access point for users, but current approaches demand extensive manual dec...
Digital Zero-Noise Extrapolation with Quantum Circuit Unoptimization
Elijah Pelofske, Vincent Russo·Mar 8, 2025
Quantum circuit unoptimization is an algorithm that transforms a quantum circuit into a different circuit that uses more gate operations while maintaining the same unitary transformation. We demonstrate that this method can implement digital zero-noi...
Reassessing the boundary between classical and nonclassical for individual quantum processes
Yujie Zhang, David Schmid, Yìlè Yīng +1 more·Mar 7, 2025
There is a received wisdom about where to draw the boundary between classical and nonclassical for various types of quantum processes. For multipartite states, it is the divide between separable and entangled; for channels, the divide between entangl...
Memory preservation and cooperative shielding in complex quantum networks
Simone Ausilio, Fausto Borgonovi, Giuseppe Luca Celardo +2 more·Mar 7, 2025
Complex quantum networks are powerful tools in the modeling of transport phenomena, particularly for biological systems, and enable the study of emergent phenomena in many-body quantum systems. High connectivity and long-range interactions induce str...
Compliance of AI Systems
Julius Schöning, Niklas Kruse·Mar 7, 2025
The increasing integration of artificial intelligence (AI) systems in various fields requires solid concepts to ensure compliance with upcoming legislation. This paper systematically examines the compliance of AI systems with relevant legislation, fo...
Compare Similarities Between DNA Sequences Using Permutation-Invariant Quantum Kernel
Chenyu Shi, Gabriele Leoni, Mauro Petrillo +2 more·Mar 7, 2025
Computing the similarity between two DNA sequences is of vital importance in bioscience, yet it can be computationally expensive on classical hardware. For example, the edit distance with move operations (EDM), a DNA similarity measure of interest in...
Implementation and verification of coherent error suppression using randomized compiling for Grover's algorithm on a trapped-ion device
Masatoshi Ishii, Hammam Qassim, Tomochika Kurita +4 more·Mar 7, 2025
In near-term quantum computations that do not employ error correction, noise can proliferate rapidly, corrupting the quantum state and making results unreliable. These errors originate from both decoherence and control imprecision. The latter can man...
Phase estimation with partially randomized time evolution
Jakob Gunther, Freek Witteveen, Alexander Schmidhuber +3 more·Mar 7, 2025
Quantum phase estimation combined with Hamiltonian simulation is the most promising algorithmic framework to computing ground state energies on quantum computers. Its main computational overhead derives from the Hamiltonian simulation subroutine. In ...
Quantum smoothed particle hydrodynamics algorithm inspired by quantum walks
R. Au-Yeung, V. Kendon, S. Lind·Mar 7, 2025
Recent years have seen great progress in quantum computing, providing opportunities to overcome computational bottlenecks in many scientific applications. In particular, the intersection of computational fluid dynamics and quantum computing has becom...
Dynamics of disordered quantum systems with two- and three-dimensional tensor networks
Joseph Tindall, A. Mello, M. Fishman +2 more·Mar 7, 2025
Quantum spin glasses form a good testbed for studying the performance of various quantum annealing and optimization algorithms. In this work we show how two- and three-dimensional tensor networks can accurately and efficiently simulate the quantum an...
Molecular representations of quantum circuits for quantum machine learning
E. Torabian, R. Krems·Mar 7, 2025
We establish an isomorphism between quantum circuits (QCs) and a subspace of polyatomic molecules, which suggests that molecules can be used as descriptors of QCs for quantum machine learning. Our numerical results show that the performance of QCs fo...
Data-Efficient Error Mitigation for Physical and Algorithmic Errors in a Hamiltonian Simulation
Shigeo Hakkaku, Yasunari Suzuki, Yuuki Tokunaga +1 more·Mar 7, 2025
Quantum dynamics simulation via Hamilton simulation algorithms is one of the most crucial applications in the quantum computing field. While this task has been relatively considered the target in the fault-tolerance era, the experiment for demonstrat...
Fast and memory-efficient strong simulation of noisy adaptive linear optical circuits
Timothée Goubault de Brugière, Nicolas Heurtel·Mar 7, 2025
Exactly computing the full output distribution of linear optical circuits remains a challenge, as existing methods are either time-efficient but memory-intensive or memory-efficient but slow. Moreover, any realistic simulation must account for noise,...
Generation of Frequency-Tunable Shaped Single Microwave Photons Using a Fixed-Frequency Superconducting Qubit
Takeaki Miyamura, Y. Sunada, Zhiling Wang +3 more·Mar 7, 2025
Scaling up a superconducting quantum computer will likely require quantum communication between remote chips, which can be implemented using an itinerant microwave photon in a transmission line. To realize high-fidelity communication, it is essential...
Bypassing orthogonalization in the quantum DPP sampler
M. Fanuel, R. Bardenet·Mar 7, 2025
Given an $n\times r$ matrix $X$ of rank $r$, consider the problem of sampling $r$ integers $\mathtt{C}\subset \{1, \dots, n\}$ with probability proportional to the squared determinant of the rows of $X$ indexed by $\mathtt{C}$. The distribution of $\...
Quantum Decoherence of Nitrogen‐Vacancy Spin Ensembles in a Nitrogen Spin Bath in Diamond Under Dynamical Decoupling
Huijin Park, M. Onizhuk, Eunsang Lee +6 more·Mar 7, 2025
The negatively charged nitrogen‐vacancy (NV) center in diamond has emerged as a leading qubit platform. One of the key challenges for NV‐based quantum applications is building an accurate model to predict their decoherence properties. In this study, ...
Parallel Logical Measurements via Quantum Code Surgery
Alexander Cowtan, Zhiyang He, Dominic J. Williamson +1 more·Mar 6, 2025
Quantum code surgery is a flexible and low overhead technique for performing logical measurements on quantum error-correcting codes, which generalises lattice surgery. In this work, we present a code surgery scheme, applicable to any qubit stabiliser...
Exceptional topology on nonorientable manifolds
J. Lukas K. König, Kang Yang, André Grossi Fonseca +3 more·Mar 6, 2025
We classify gapped phases and characteristic nodal points of non-Hermitian band structures on two-dimensional nonorientable parameter spaces. Such spaces arise in a wide range of physical systems in the presence of nonsymmorphic parameter space symme...