Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,548
This Month
1,041
Today
0
Research Volume
12,931 papers in 12 months (-5% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Information-Geometric Quantum Process Tomography of Single Qubit Systems
T. Koide, A. van de Venn·Mar 24, 2026
We establish an exact information-geometric inequality that remains valid regardless of the underlying dynamics, encompassing both Markovian and non-Markovian evolutions within the mixed-state domain. This inequality can be viewed as an extension of ...
QuickQudits: A Framework for Efficient Simulation of Noisy Qudit Clifford Circuits via an Extended Stabilizer Tableau Formalism
Nina Brandl, Mykyta Cherniak, Johannes Kofler +1 more·Mar 24, 2026
We present a comprehensive and self-contained framework for the efficient classical simulation of Clifford circuits acting on $d$-dimensional qudits, including realistic Pauli/Weyl noise via stochastic simulation. Our approach uses the stabilizer tab...
Fast elementwise operations on tensor trains with alternating cross interpolation
Marc K. Ritter·Mar 24, 2026
Tensor trains (TTs), also known as matrix product states (MPS), are compressed representations of high-dimensional data that can be efficiently manipulated to perform calculations on the data. In many applications, such as TT-based solvers for nonlin...
Characterization and Comparison of Energy Relaxation in Fluxonium Qubits
Kate Azar, Lamia Ateshian, Mallika T. Randeria +19 more·Mar 24, 2026
Fluxonium superconducting qubits have demonstrated long coherence times and high single- and two-qubit gate fidelities, making them a favorable building block for superconducting quantum processors. We investigate the dominant limitations to fluxoniu...
Optimal pure state cloning and transposition are complementary channels
Vanessa Brzić, Dmitry Grinko, Michał Studziński +1 more·Mar 24, 2026
State cloning and state transposition are fundamental transformations which, despite being desirable, cannot be perfectly realised due to two conceptually distinct constraints of quantum theory: cloning is forbidden by linearity, while transposition ...
Fading ergodicity and quantum dynamics in random matrix ensembles
Rafał Świętek, Maksymilian Kliczkowski, Miroslav Hopjan +1 more·Mar 24, 2026
Recent work has proposed fading ergodicity as a mechanism for many-body ergodicity breaking. Here, we show that two paradigmatic random matrix ensembles -- the Rosenzweig-Porter model and the ultrametric model -- fall within the same universality cla...
Quantum correlations in prepare-and-measure scenarios and their semi-device-independent applications
Jonatan Bohr Brask, Nicolas Brunner, Jef Pauwels +2 more·Mar 24, 2026
A key aspect in quantum information is to understand the advantage offered by quantum systems over classical ones in communication tasks. In recent years, a fundamental approach to this problem has been developed, focusing on quantum correlations in ...
Entanglement transference and non-inertial quantum reference frames
Everett A. Patterson, Sijia Wang, Robert B. Mann·Mar 24, 2026
Given the recent interest in perspectival quantum reference frames (QRFs), we ask how quantum properties in the perspectival picture relate to their global, non-perspectival counterparts. It is instructive to establish this link, as most known result...
Reaching states below the threshold energy in spin glasses via quantum annealing
Christopher L. Baldwin·Mar 24, 2026
Although quantum annealing is usually considered as a method for locating the ground states of difficult spin-glass and optimization problems, its use in approximate optimization -- finding low- but not zero-energy states in a reasonably short amount...
Laser-induced creation of coherent V2 centers in bulk-grown silicon carbide
L. J. Feije, G. M. Timmer, Y. Hu +9 more·Mar 24, 2026
Solid-state spin defects are promising qubits for quantum network nodes. A key challenge towards larger networks is creating defects with high yield into nanophotonic devices, while maintaining good optical and spin properties. Here, we demonstrate t...
Enhanced Dark Matter Quantum Sensing via Geometric Phase
Xiaolin Ma, Jie Sheng·Mar 24, 2026
We propose a quantum sensing protocol for coupled qubit-oscillator systems that surpasses the standard quantum limit by exploiting a geometric phase for dark matter searches. Instead of letting the cavity evolve freely under a weak dark matter backgr...
Observer-Dependent Entropy and Diagonal Rényi Invariants in Quantum Reference Frames
Anne-Catherine de la Hamette·Mar 24, 2026
Quantum reference frames provide a relational description of multipartite quantum systems in which physical states and observables are defined relative to quantum observers. Yet different observers can assign different entropies to the same system, r...
Aumann's theorem beyond ontology: quantum, postquantum, and indefinite causal order
Carlo Cepollaro, Andrea Di Biagio·Mar 24, 2026
Agreement theorems are no-go results about rational disagreement: if two agents start from a common prior and their posterior beliefs are common knowledge, they cannot assign different probabilities to the same event. Standard treatments of the resul...
Initial State Memory in Finite Random Brickwork Circuits
Jakob Bannister, Katja Klobas, Colin Rylands +1 more·Mar 24, 2026
We ask under what conditions a finite brickwork circuit of random gates retains local information about the initial state. To answer this question we measure the averaged Frobenius distance between the reduced states obtained by evolving two arbitrar...
Information-Theoretic Scaling Laws of Neural Quantum States
Yiming Lu, Sriram Bharadwaj, Dikshant Rathore +1 more·Mar 24, 2026
We establish an information-theoretic scaling law for generic autoregressive neural quantum states, determined by the middle-cut mutual information of the wavefunction amplitude. By formalizing the virtual bond as an effective information channel acr...
Reaching for the performance limit of hybrid density functional theory for molecular chemistry
Jiashu Liang, Martin Head-Gordon·Mar 24, 2026
Density functional theory (DFT) offers an exceptional balance between accuracy and efficiency, but practical density functional approximations face an unavoidable trade-off among simplicity, accuracy, and transferability. A systematic protocol is the...
A multi-ion optical clock with $\mathbf{5 \times 10^{-19}}$ uncertainty
Melina Filzinger, Martin R. Steinel, Jian Jiang +4 more·Mar 24, 2026
Today's most accurate clocks are based on laser spectroscopy of electronic transitions in single trapped ions and feature fractional frequency uncertainties below $1\times10^{-18}$. Scaling these systems to multiple, simultaneously interrogated ions ...
Scalable quantum circuit generation for iterative ground state approximation using Majorana Propagation
Rahul Chakraborty, Aaron Miller, Anton Nykänen +6 more·Mar 24, 2026
We introduce the Adaptive Derivative-Assembled Pseudo-Trotter ansatz Variational Majorana Propagation Eigensolver (ADAPT-VMPE), a quantum-inspired classical algorithm that exploits Majorana Propagation (MP) to produce circuits for approximating the g...
Tensor network influence functionals for open quantum systems with general Gaussian bosonic baths
Valentin Link·Mar 24, 2026
Dynamics of open quantum systems with structured reservoirs can often be simulated efficiently with tensor network influence functionals. The standard variants of the time-evolving matrix product operator (TEMPO) method are applicable when the system...
Elucidating the Synergetic Interplay between Average Intermolecular Coupling and Coupling Disorder in Short-Time Exciton Transfer
Siwei Wang, Guangming Liu, Hsing-Ta Chen·Mar 24, 2026
Exciton transport in molecular aggregates is a fundamental process governing the performance of organic optoelectronics and light-harvesting systems. While most theoretical studies have emphasized long-time transport behavior, recent advances in ultr...