Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Flowing Through Hilbert Space: Quantum-Enhanced Generative Models for Lattice Field Theory
Jehu Martinez, Andrea Delgado·May 15, 2025
Sampling from high-dimensional and structured probability distributions is a fundamental challenge in computational physics, particularly in the context of lattice field theory (LFT), where generating field configurations efficiently is critical, yet...
On the quantum computational complexity of classical linear dynamics with geometrically local interactions: Dequantization and universality
Kazuki Sakamoto, Keisuke Fujii·May 15, 2025
The simulation of large-scale classical systems in exponentially small space on quantum computers has gained attention. The prior work demonstrated that a quantum algorithm offers an exponential speedup over any classical algorithm in simulating clas...
Reciprocal Floquet thermalization in one-dimensional Rydberg atom array
Yunhui He, Yuechun Jiao, Jianming Zhao +1 more·May 15, 2025
Periodically driven Floquet quantum systems hold great promise for engineering exotic quantum phases and matter, but are often limited by rapid thermalization. In this work, we propose and demonstrate a square-wave-modulated Floquet engineering proto...
Multipartite Hardy paradox unlocks device-independent key sharing
Ranendu Adhikary, Mriganka Mandal·May 15, 2025
We introduce a device-independent quantum key distribution protocol for N parties, using the multipartite Hardy paradox to certify genuine multipartite nonlocality. Unlike traditional multipartite protocols that extract the key from measurement outco...
Generation of frequency entanglement with an effective quantum dot-waveguide two-photon quadratic interaction
Mohamed Meguebel, Maxime Federico, Simone Felicetti +2 more·May 15, 2025
Light-matter interactions with quantum dots have been extensively studied to harness key quantum properties of photons, such as indistinguishability and entanglement. In this theoretical work, we exploit the atomic-like four-level structure of a quan...
Collective light shifts of many longitudinal cavity modes induced by coupling to a cold-atom ensemble
Marin Ðujić, Mateo Kruljac, Lovre Kardum +4 more·May 15, 2025
We experimentally study the interaction between a cold atom cloud and many longitudinal modes of a high quality Fabry-Perot cavity, by measuring signatures of collective light shifts in the cavity transmission spectrum of an optical frequency comb pr...
Non-Clifford Cost of Random Unitaries
Lorenzo Leone, Salvatore F. E. Oliviero, Alioscia Hamma +2 more·May 15, 2025
Recent years have enjoyed a strong interest in exploring properties and applications of random quantum circuits. In this work, we explore the ensemble of $t$-doped Clifford circuits on $n$ qubits, consisting of Clifford circuits interspersed with $t$...
Two-local modifications of SYK model with quantum chaos
Masanori Hanada, Sam van Leuven, Onur Oktay +1 more·May 15, 2025
The Sachdev--Ye--Kitaev (SYK) model may provide us with a good starting point for the experimental study of quantum chaos and holography in the laboratory. Still, the four-local interaction of fermions makes quantum simulation challenging, and it wou...
Observation of Genuine High-dimensional Multi-partite Non-locality in Entangled Photon States
Xiao-Min Hu, Cen-Xiao Huang, N. d’Alessandro +10 more·May 15, 2025
Quantum information science has leaped forward with the exploration of high-dimensional quantum systems, offering greater potential than traditional qubits in quantum communication and quantum computing. To advance the field of high-dimensional quant...
Unlocking early fault-tolerant quantum computing with mitigated magic dilution
Surabhi Luthra, Alexandra E. Moylett, Dan E. Browne +1 more·May 15, 2025
As quantum computing progresses towards the early fault-tolerant regime, quantum error correction will play a crucial role in protecting qubits and enabling logical Clifford operations. However, the number of logical qubits will initially remain limi...
High-performance local decoders for defect matching in 1D
Louis Paletta, Anthony Leverrier, M. Mirrahimi +1 more·May 15, 2025
Local decoders, also known as cellular-automaton decoders, offer a promising path toward real-time quantum error correction by replacing centralized classical decoding, with inherent hardware constraints, by a natively parallel and streamlined archit...
Quantum Computing and AI: Perspectives on Advanced Automation in Science and Engineering
Tadashi Kadowaki·May 15, 2025
Recent advances in artificial intelligence (AI) and quantum computing are accelerating automation in scientific and engineering processes, fundamentally reshaping research methodologies. This perspective highlights parallels between scientific automa...
Research of the Variational Shadow Quantum Circuit Based on the Whale Optimization Algorithm in Image Classification
Shuang Wu, Xueliang Song, Yumin Dong +1 more·May 15, 2025
In order to explore the possibility of cross-fertilization between quantum computing and neural networks as well as to improve the classification performance of quantum neural networks, this paper proposes an improved Variable Split Shadow Quantum Ci...
From noisy observables to accurate ground state energies: a quantum classical signal subspace approach with denoising
Hardeep Bassi, Yizhi Shen, H. Bhat +1 more·May 15, 2025
We propose a hybrid quantum–classical algorithm for ground state energy estimation that remains robust to highly noisy data and exhibits low sensitivity to hyperparameter tuning. Our approach—Fourier Denoising Observable Dynamic Mode Decomposition (F...
Exploring Variational Entanglement Hamiltonians
Yanick S. Kind, B. Fauseweh·May 15, 2025
Recent advances in analog and digital quantum-simulation platforms have enabled exploration of the spectrum of entanglement Hamiltonians via variational algorithms. In this work we analyze the convergence properties of the variationally obtained solu...
Geometrically Enhanced Topological Quantum Codes
D. Aasen, Jeongwan Haah, Matthew B. Hastings +1 more·May 15, 2025
We consider geometric methods of ``rotating"the toric code in higher dimensions to reduce the qubit count. These geometric methods can be used to prepare higher dimensional toric code states using single shot techniques, and in turn these may be used...
Self Clocked Digital LDO for Cryogenic Power Management in 22nm FDSOI with 98 Percent Efficiency
A. Ashok, A. Cabrera, S. Baje +4 more·May 15, 2025
A universal quantum computer~(QC), though promising ground breaking solutions to complex problems, still faces several challenges with respect to scalability. Current state-of-the-art QC use a great quantity of cables to connect the physical qubits, ...
Distributed Realization of Color Codes for Quantum Error Correction
N. K. Chandra, David Tipper, Reza Nejabati +2 more·May 15, 2025
Color codes are a leading class of topological quantum error-correcting codes with modest error thresholds and structural compatibility with two-dimensional architectures, which make them well-suited for fault-tolerant quantum computing (FTQC). Here,...
Spectral quantum algorithm for passive scalar transport in shear flows
Philip R. Pfeffer, Peter Brearley, Sylvain Laizet +1 more·May 15, 2025
The mixing of scalar substances in fluid flows by stirring and diffusion is ubiquitous in natural flows, chemical engineering, and microfluidic drug delivery. Here, we present a spectral quantum algorithm for scalar mixing by solving the advection–di...
High-Temperature Fermionic Gibbs States are Mixtures of Gaussian States
Akshar Ramkumar, Yiyi Cai, Yu Tong +1 more·May 14, 2025
Efficient simulation of a quantum system generally relies on structural properties of the quantum state. Motivated by the recent results by Bakshi et al. on the sudden death of entanglement in high-temperature Gibbs states of quantum spin systems, we...