Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Simulating Microwave-Controlled Spin Imaging with Free-Space Electrons
Santiago Beltrán-Romero, Stefan Löffler, Dennis Rätzel +1 more·Feb 24, 2026
Coherent spin resonance techniques, such as nuclear and electron spin resonance spectroscopy, have revolutionized non-invasive imaging by providing spectrally resolved information about spin dynamics. Motivated by the recent emergence of electron mic...
Toward speedup without quantum coherent access
Nhat A. Nghiem·Feb 24, 2026
Along with the development of quantum technology, finding useful applications of quantum computers has been a central pursuit. Despite various quantum algorithms have been developed, many of them often require strong input assumptions, which is hardw...
Generative Deep Learning for the Two-Dimensional Quantum Rotor Model
Yanyang Wang, Feng Gao, Kui Tuo +1 more·Feb 24, 2026
The advancement of diverse generative deep learning models and their variants has furnished substantial insights for investigating quantum many-body problems. In this work, we design two models based on the foundational architecture of generative adv...
A note on entanglement detection via the generalized realignment moments
Xiaofen Huang, Xishun Zhu, Bin Chen +2 more·Feb 24, 2026
The experimental detection of quantum entanglement is of great importance in quantum information processing. We present two separability criteria based on the generalized realignment moments. By incorporating additional parameters, these criteria pro...
Quantum circuit design from a retraction-based Riemannian optimization framework
Zhijian Lai, Hantao Nie, Jiayuan Wu +1 more·Feb 24, 2026
Designing quantum circuits for ground state preparation is a fundamental task in quantum information science. However, standard Variational Quantum Algorithms (VQAs) are often constrained by limited ansatz expressivity and difficult optimization land...
Effect of atom-oscillator interaction on the aging transition in coupled oscillators
Huining Zhang, X. Z. Hao, X. X. Yi·Feb 24, 2026
Oscillators are often employed as a model of radiation fields, which may couple to an atom and play an important role for creating and manipulating nonclassical states in quantum metrology, quantum simulation, and quantum information. Aging transitio...
Measurement-Guided State Refinement for Shallow Feedback-Based Quantum Optimization Algorithm
Lucas A. M. Rattighieri, Pedro M. Prado, Marcos C. de Oliveira +1 more·Feb 23, 2026
Limited circuit depth remains a central constraint for quantum optimization in the noisy intermediate-scale quantum (NISQ) regime, where shallow unitary dynamics may fail to sufficiently concentrate probability on low-energy configurations. We introd...
Direct Variational Calculation of Two-Electron Reduced Density Matrices via Semidefinite Machine Learning
Luis H. Delgado-Granados, David A. Mazziotti·Feb 23, 2026
We introduce a data-driven framework for approximating the convex set of $N$-representable two-electron reduced density matrices (2-RDMs). Traditional approaches characterize this set through linear matrix inequalities that define its supporting hype...
Quantum Machine Learning for Complex Systems
Vinit Singh, Amandeep Singh Bhatia, Mandeep Kaur Saggi +2 more·Feb 23, 2026
Quantum machine learning (QML) is rapidly transitioning from theoretical promise to practical relevance across data-intensive scientific domains. In this Review, we provide a structured overview of recent advances that bridge foundational quantum lea...
Time Crystals as Passively Protected Oscillating Qubits
Mert Esencan, A. I. Lvovsky, Berislav Buča·Feb 23, 2026
Protecting information against decoherence in open quantum systems remains a central challenge for quantum computing. In particular, passive error correction schemes have so far been limited to static memories rather than dynamical qubits. We demonst...
Quantum Information Approach to Bosonization of Supersymmetric Yang-Mills Fields
Radhakrishnan Balu, S. James Gates·Feb 23, 2026
We consider bosonization of supersymmetry in the context of Wess-Zumino quantum mechanics. Our motivation for this investigation is the flexibility the bosonic fock space affords as any classical probability distribution can be realized on it making ...
Experimental characterization of coherent and non-Markovian errors using tangent space decomposition
Elia Perego, Andrea Rodriguez-Blanco, K. Birgitta Whaley +1 more·Feb 23, 2026
Accurate characterization of coherent and non-Markovian errors remains a central challenge in quantum information processing, as conventional benchmarking techniques typically rely on Markovian and time-independent noise assumptions. In practice, how...
Quantum correlation and coherence in a mononuclear nickel-based molecular Magnet
S. Bhuvaneswari, R. Muthuganesan, R. Radha·Feb 23, 2026
We investigate the behaviors of thermal entanglement, quantum correlation beyond entanglement namely, measurement-induced nonlocality (MIN) and coherence in a nickel radical molecular magnet (Et3NH)[Ni(hfac)2L], whose spin-spin interactions are well ...
Rapid state-resolved single-atom imaging of alkaline-earth fermions
Thies Plassmann, Leon Schaefer, Meny Menashes +1 more·Feb 23, 2026
Local Hilbert spaces with large dimension are of key interest for quantum information with applications in quantum computing and memories, quantum simulations and metrology. Thanks to its weak coupling to external perturbations, the large ground-stat...
Multiphoton Hong-Ou-Mandel Interference Enables Superresolution of Bright Thermal Sources
Aiman Khan, Danilo Triggiani, Vincenzo Tamma·Feb 23, 2026
We present a quantum optical scheme for imaging transversely displaced thermal sources of arbitrary intensities by employing multiphoton interference with a reference single-photon Fock state at a beamsplitter. Obtaining an analytical form for transv...
Krylov Distribution and Universal Convergence of Quantum Fisher Information
Mohsen Alishahiha, Fatemeh Tarighi Tabesh, Mohammad Javad Vasli·Feb 23, 2026
We develop a spectral-resolvent framework for computing the quantum Fisher information (QFI) using Krylov subspace methods, extending the notion of the Krylov distribution. By expressing the QFI as a resolvent moment of the superoperator $\mathcal{K}...
Quantum Resource Theory of Lasers
Yannik Brune, Marius Cizauskas, Marc Aßmann·Feb 23, 2026
Lasers serve as the fundamental workhorses of photonic quantum technologies, with perfectly coherent light fields being essential for many protocols that generate nonclassical light, implement coherent control schemes, and initialize qubits. However,...
Direct access to the initial polarization of ${}^{13}C$ nuclei by measuring coherence evolution of an nitrogen-vacancy center spin qubit
Mateusz Kuniej, Katarzyna Roszak·Feb 23, 2026
We introduce a method for the measurement of the lower bound on the initial polarization of spinful nuclei in a diamond by following the coherence evolution of an NV center spin qubit after a simple scheme is operated on the qubit to facilitate the t...
Quantum Reservoir Autoencoder: Conditions, Protocol, and Noise Resilience
Hikaru Wakaura, Taiki Tanimae·Feb 23, 2026
Quantum reservoir computing exploits fixed quantum dynamics and a trainable linear readout to process temporal data, yet reversing the transformation -- reconstructing the input from the reservoir output -- has been considered intractable due to the ...
Temporal magnon-qubit Mach-Zehnder interferometer
Cody Trevillian, Steven Louis, Vasyl Tyberkevych·Feb 23, 2026
A temporal magnon-qubit Mach-Zehnder (MZ) interferometer is proposed. The interferometer is based on controllable entanglement of a microwave qubit and a magnonic state, achieved by application of a pulsed magnetic field playing the role of a magnon-...