Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
26,835
This Month
452
Today
0
Research Volume
12,445 papers in 12 months (-19% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A New Angle on Quantum Subspace Diagonalization for Quantum Chemistry
Xeno De Vriendt, Jacob Bringewatt, Nik O. Gjonbalaj +5 more·Feb 12, 2026
Quantum subspace diagonalization and quantum Krylov algorithms offer a feasible, pre- or early-fault tolerant alternative to quantum phase estimation for using quantum computers to estimate the low-lying spectra of quantum systems. However, despite p...
RING: Rabi oscillations induced by nonresonant geometric drive
Baksa Kolok, András Pályi·Feb 12, 2026
Coherent control of two-level quantum systems is typically achieved using resonant driving fields, forming the basis for qubit operations. Here, we report a mechanism for inducing complete Rabi oscillations in monochromatically driven two-level quant...
Resource-Efficient Teleportation of High-Dimensional Quantum Coherence via Initial Phase Engineering
Long Huang, Cai-Hong Liao, Yan-Ling Li +1 more·Feb 12, 2026
High-dimensional quantum systems leverage an expanded Hilbert space to enhance resilience against decoherence and noise. However, standard quantum teleportation is fundamentally limited by the quadratic growth of measurement complexity and high class...
Operational limits to entanglement-based satellite quantum key distribution
Jasminder S. Sidhu, Sarah E. McCarthy, Cameron Paterson +1 more·Feb 12, 2026
Space-based distribution of quantum entanglement will be essential for global quantum networking and secure communications. Modelling and analysis of the performance of satellite entanglement pair distribution is important for the architecture and de...
Control the qubit-qubit coupling with double superconducting resonators
Hui Wang, Rui Wang, Daichi Sugiyama +5 more·Feb 12, 2026
We experimentally studied the switching off processes in the double-resonator coupler superconducting quantum circuit. In both frequency and time-domain, we observed the variation of qubit-qubit effective coupling by tuning the frequency differences ...
Microscopic Origin of Superradiant Biphoton Emission in Atomic Ensembles
Zi-Yu Liu, Jiun-Shiuan Shiu, Wei-Lin Chen +1 more·Feb 11, 2026
Superradiant biphoton emission from atomic ensembles provides a powerful route to generating highly correlated quantum light, yet its microscopic physical origin has remained incompletely understood. In particular, it is often unclear how collective ...
Superresolution in Quantum Noise Spectroscopy via Filter Design
Joseph T. Iosue, Paraj Titum, Taohan Lin +2 more·Feb 11, 2026
Resolving signals with closely spaced frequencies is central to applications in communications, spectroscopy and sensing. Recent results have shown that quantum sensing protocols can exhibit superresolution, the ability to discriminate between spectr...
Unlearnable phases of matter
Tarun Advaith Kumar, Yijian Zou, Amir-Reza Negari +2 more·Feb 11, 2026
We identify fundamental limitations in machine learning by demonstrating that non-trivial mixed-state phases of matter are computationally hard to learn. Focusing on unsupervised learning of distributions, we show that autoregressive neural networks ...
Quantum computing with anyons is fault tolerant
Anasuya Lyons, Benjamin J. Brown·Feb 11, 2026
In seminal work (arxiv:quant-ph/9707021) Alexei Kitaev proposed topological quantum computing (arXiv:cond-mat/0010440, arxiv:quant-ph/9707021, arXiv:quant-ph/0001108, arXiv:0707.1889), whereby logic gates of a quantum computer are conducted by creati...
Nonreciprocal many-body physics
Michel Fruchart, Vincenzo Vitelli·Feb 11, 2026
Reciprocity is a fundamental symmetry present in many natural phenomena and engineered systems. Distinct situations where this symmetry is broken are typically grouped under the umbrella term "nonreciprocity", colloquially defined by: the action of A...
Stratified Sampling for Quasi-Probability Decompositions
Joshua W. Dai, Bálint Koczor·Feb 11, 2026
Quasi-probability decompositions (QPDs) have proven essential in many quantum algorithms and protocols -- one replaces a ``difficult'' quantum circuit with an ensemble of ``easier'' circuit variants whose weighted outcomes reproduce any target observ...
Ergotropic Mpemba crossings in finite-dimensional quantum batteries
Triyas Sapui, Tanoy Kanti Konar, Aditi Sen De·Feb 11, 2026
The quantum Mpemba effect is a counterintuitive phenomenon in which a state initially farther from equilibrium relaxes more rapidly than one that starts nearer to equilibrium. In the context of finite-dimensional quantum batteries interacting with an...
Reaching the quantum noise limit for interferometric measurement of optical nonlinearity in vacuum
Ali Aras, Adrien E. Kraych, Xavier Sarazin +3 more·Feb 11, 2026
Quantum Electrodynamics predicts that the vacuum must behave as a nonlinear optical medium:the vacuum optical index should increase when vacuum is stressed by intense electromagnetic fields.The DeLLight (Deflection of Light by Light) project aims to ...
Scaling and Universality at Noise-Affected Non-Equilibrium Spin Correlation Functions
R. Jafari, Alireza Akbari·Feb 11, 2026
We investigate scaling and universality in nonequilibrium spin correlation functions in the presence of uncorrelated noise. In the absence of noise, spin correlation functions exhibit a crossover from monotonic decay at fast sweep velocities to oscil...
Error-Tolerant Quantum State Discrimination: Optimization and Quantum Circuit Synthesis
Chien-Kai Ma, Bo-Hung Chen, Tian-Fu Chen +2 more·Feb 11, 2026
We develop error-tolerant quantum state discrimination(QSD) strategies that maintain reliable performance under moderate noise. Two complementary approaches are proposed: CrossQSD, which generalizes unambiguous discrimination with tunable confidence ...
Experimental demonstration that qubits can be cloned at will, if encrypted with a single-use decryption key
Koji Yamaguchi, Leon Rullkötter, Ibrahim Shehzad +3 more·Feb 11, 2026
The no-cloning theorem forbids the creation of identical copies of qubits, thereby imposing strong limitations on quantum technologies. A recently-proposed protocol, encrypted cloning, showed, however, that the creation of perfect clones is theoretic...
Run-length certificates in quantum learning: sample complexity and noise thresholds
Jeongho Bang·Feb 11, 2026
Quantum learning from state samples is often benchmarked in a fixed-budget paradigm, relating error to a prescribed number of copies. We instead adopt a stopping-time viewpoint: in minimal-feedback learning, the learning completion can be defined by ...
Erasure Thresholds for Hyperbolic and Semi-Hyperbolic Surface Codes
Aygul Azatovna Galimova·Feb 11, 2026
We extend the circuit-level erasure noise model and Wang et al.\ quadratic expansion fitting of Chang et al.\ from planar surface codes to hyperbolic CSS surface codes. Under Chang et al.'s noise models, the $\{8,3\}$ Bolza fine-grained family thresh...
Quantum Brownian motion with non-Gaussian noises: Fluctuation-Dissipation Relation and nonlinear Langevin equation
Hing-Tong Cho, Bei-Lok Hu·Feb 11, 2026
Building upon the work of Hu, Paz, and Zhang [1,2] on open quantum systems we consider the quantum Brownian motion (QBM) model with one oscillator (position variable $x$) as the system, {\it nonlinearly} coupled to an environment of $N$ harmonic osci...
Multiconfiguration Pair-Density Functional Theory Calculations of Ground and Excited States of Complex Chemical Systems with Quantum Computers
Zhanou Liu, Yuhao Chen, Ying Ma +2 more·Feb 11, 2026
Accurately describing strong electron correlation in complex systems remains a prominent challenge in computational chemistry as near-term quantum algorithms treating total correlation often require prohibitively deep circuits. Here we present a hybr...