Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Exponential quantum speedups for near-term molecular electronic structure methods
Oskar Leimkuhler, K. Birgitta Whaley·Mar 26, 2025
We prove classical simulation hardness, under the generalized $\mathsf{P}\neq\mathsf{NP}$ conjecture, for quantum circuit families with applications in near-term chemical ground state estimation. The proof exploits a connection to particle number con...
Improving Variational Quantum Circuit Optimization via Hybrid Algorithms and Random Axis Initialization
Joona V. Pankkonen, Lauri Ylinen, Matti Raasakka +1 more·Mar 26, 2025
Variational quantum circuits (VQCs) are an essential tool in applying noisy intermediate-scale quantum computers to practical problems. VQCs are used as a central component in many algorithms, for example, in quantum machine learning, optimization, a...
Filter-enhanced adiabatic quantum computing on a digital quantum processor
Erenay Karacan, Conor Mc Keever, M. Foss-Feig +2 more·Mar 26, 2025
Eigenstate filters underpin near-optimal quantum algorithms for ground state preparation. Their realization on current quantum computers, however, poses a challenge as the filters are typically represented by deep quantum circuits. Additionally, sinc...
Digital quantum magnetism on a trapped-ion quantum computer
Reza Haghshenas, Eli Chertkov, Michael Mills +56 more·Mar 26, 2025
Digital quantum matter -- realized when discrete quantum gates approximate continuous time evolution -- is susceptible to heating into chaotic, structureless states. If digitization errors are adequately suppressed, a long-lived transient regime of a...
High-efficiency vertical emission spin-photon interface for scalable quantum memories
Siavash Mirzaei-Ghormish, Jeddy Bennett, Ryan M. Camacho·Mar 25, 2025
We present an efficient spin-photon interface for free-space vertical emission coupling. Using a \rev{dipole model}, we show that our design achieves a far-field collection efficiency of 96\% at the numerical aperture of 0.7 with a 95\% overlap to a ...
Lossy Compression of Scientific Data: Applications Constrains and Requirements
Franck Cappello, Allison Baker, Ebru Bozda +22 more·Mar 25, 2025
Increasing data volumes from scientific simulations and instruments (supercomputers, accelerators, telescopes) often exceed network, storage, and analysis capabilities. The scientific community's response to this challenge is scientific data reductio...
Versatile Cross-platform Compilation Toolchain for Schrödinger-style Quantum Circuit Simulation
Yuncheng Lu, Shuang Liang, Hongxiang Fan +3 more·Mar 25, 2025
While existing quantum hardware resources have limited availability and reliability, there is a growing demand for exploring and verifying quantum algorithms. Efficient classical simulators for high-performance quantum simulation are critical to meet...
Simulation of Fermionic circuits using Majorana Propagation
Aaron Miller, Joachim Favre, Zoë Holmes +6 more·Mar 24, 2025
We introduce Majorana Propagation, an algorithmic framework for the classical simulation of Fermionic circuits. Inspired by Pauli Propagation, Majorana Propagation operates by applying successive truncations throughout the Heisenberg evolution of the...
Optomechanical quantum bus for donor spins in silicon
Henri Lyyra, Cliona Shakespeare, Simeoni Ahopelto +6 more·Mar 24, 2025
Silicon is the foundation of current information technology, and a promising platform for future quantum information technology as silicon-based qubits exhibit some of the longest coherence times in solid-state. At the same time, silicon is the under...
Blockwise optimization for projective variational quantum dynamics (BLOP-VQD): Algorithm and implementation for lattice systems.
Harshdeep Singh, Sonjoy Majumder, Sabyashachi Mishra·Mar 24, 2025
We present an efficient approach to simulate real-time quantum dynamics using projected variational quantum dynamics, where the computational cost is reduced by strategically optimizing only a subset of the variational parameters at each time step. T...
Dual-type dual-element atom arrays for quantum information processing
Zhanchuan Zhang, Jeth Arunseangroj, Wenchao Xu·Mar 21, 2025
Neutral-atom arrays are a leading platform for quantum technologies, offering a promising route toward large-scale, fault-tolerant quantum computing. We propose a novel quantum processing architecture based on dual-type, dual-element atom arrays, whe...
A theory of quasiballistic spin transport
Jeffrey Z. Song, Hyunsoo Ha, Wen Wei Ho +1 more·Mar 20, 2025
A recent work [Mierzejewski et al., Phys. Rev. B 107, 045134 (2023)] observed "quasiballistic spin transport" - long-lived and transiently ballistic modes of the magnetization density - in numerical simulations of infinite-temperature XXZ chains with...
Probabilistic Quantum SVM Training on Ising Machine
Haoqi He, Yan Xiao·Mar 20, 2025
Quantum computing holds significant potential to accelerate machine learning algorithms, especially in solving optimization problems like those encountered in Support Vector Machine (SVM) training. However, current QUBO-based Quantum SVM (QSVM) metho...
Multimode Qubit-Conditional Operations via Generalized Cross-Resonance
M. Ayyash·Mar 20, 2025
We present a general framework for generating single- and multimode qubit-conditional operations by extending cross-resonant driving to a generalized multimode scheme. This includes single-mode conditional displacements and squeezing induced by one- ...
LuGo: an Enhanced Quantum Phase Estimation Implementation
Chao Lu, Muralikrishnan Gopalakrishanan Meena, Kalyana Chakravarthi Gottiparthi·Mar 19, 2025
Quantum Phase Estimation (QPE) is a cardinal algorithm in quantum computing that plays a crucial role in various applications, including cryptography, molecular simulation, and solving systems of linear equations. However, the standard implementation...
QEA: An Accelerator for Quantum Circuit Simulation with Resources Efficiency and Flexibility
Van Duy Tran, Tuan Hai Vu, V. Le +2 more·Mar 19, 2025
The area of quantum circuit simulation has attracted a lot of attention in recent years. However, due to the exponentially increasing computational costs, assessing and validating these models on large datasets poses significant obstacles. Despite pl...
SparQSim: Simulating Scalable Quantum Algorithms via Sparse Quantum State Representations
Tai-Ping Sun, Zhao-Yun Chen, Yun-Jie Wang +6 more·Mar 19, 2025
Efficient simulation of large-scale quantum algorithms is pivotal yet challenging due to the exponential growth of the state space inherent in both Sch\"odinger-based and Feynman-based methods. While Feynman-based simulators can be highly efficient w...
Protected phase gate for the $0$-$π$ qubit using its internal modes
Xanda C Kolesnikow, Thomas B Smith, Felix Thomsen +2 more·Mar 18, 2025
Protected superconducting qubits such as the $0$-$π$ qubit promise to substantially reduce physical error rates. However, a key challenge in the field is designing gates for these qubits that do not compromise their protection, or become infeasibly s...
Efficient quantum simulation for translationally invariant systems
Joris Kattemölle, Guido Burkard·Mar 18, 2025
Discrete translational symmetry plays a fundamental role in condensed matter physics and lattice gauge theories, enabling the analysis of systems that would otherwise be intractable. Despite this, many open problems remain. Quantum simulation promise...
Scalable architecture for measurement induced squeezed light interferometers
Abhinav Verma, Jacob Hastrup, Jonas S. Neergaard-Nielsen +1 more·Mar 18, 2025
Scalable interferometers lie at the heart of photonic quantum technologies, but their expansion has been fundamentally limited by optical losses that grow with circuit depth. Here, we introduce and experimentally demonstrate a measurement-induced arc...