Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
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-...
Quantum approaches to learning parity with noise
D. Shiu·Feb 23, 2026
The learning parity with noise (LPN) problem is a well-established computational challenge whose difficulty is critical to the security of several post-quantum cryptographic primitives such as HQC and Classic McEliece. Classically, the best-known att...
Quantum Error Correction and Dynamical Decoupling: Better Together or Apart?
Victor Kasatkin, Mario Morford-Oberst, Arian Vezvaee +1 more·Feb 22, 2026
Quantum error correction/detection (QEC/QED) and dynamical decoupling (DD) are tools for protecting quantum information. A natural goal is to combine them to outperform either approach alone. Such a benefit is not automatic: physical DD can conflict ...
What Distributed Computing Got Wrong: The Category Mistake That Turned Design Choices into Laws of Nature
Paul Borrill·Feb 21, 2026
The foundational impossibility results of distributed computing -- the Fischer-Lynch-Paterson theorem, the Two Generals Problem, the CAP theorem -- are widely understood as discoveries about the physical limits of coordination. This paper argues that...
Engineering quantum criticality and dynamics on an analog-digital simulator
Alexandra A. Geim, Nazli Ugur Koyluoglu, Simon J. Evered +14 more·Feb 20, 2026
Understanding emergent phenomena in out-of-equilibrium interacting many-body systems is an exciting frontier in physical science. While quantum simulators represent a promising approach to this long-standing problem, in practice it can be challenging...
Theory and interpretability of Quantum Extreme Learning Machines: a Pauli-transfer matrix approach
Markus Gross, Hans-Martin Rieser·Feb 20, 2026
Quantum reservoir computers (QRCs) have emerged as a promising approach to quantum machine learning, since they utilize the natural dynamics of quantum systems for data processing and are simple to train. Here, we consider $n$-qubit quantum extreme l...
A systematic approach to answering the easy problems of consciousness based on an executable cognitive system
Qi Zhang·Feb 20, 2026
Consciousness is the window of the brain and reflects many fundamental cognitive properties involving both computational and cognitive mechanisms. A collection of these properties was described as the "easy problems" by Chalmers, including the abilit...
Quantum Maximum Likelihood Prediction via Hilbert Space Embeddings
Sreejith Sreekumar, Nir Weinberger·Feb 20, 2026
Recent works have proposed various explanations for the ability of modern large language models (LLMs) to perform in-context prediction. We propose an alternative conceptual viewpoint from an information-geometric and statistical perspective. Motivat...
Quantum-enhanced phase sensitivity in an all-fiber Mach-Zehnder interferometer
Romain Dalidet, Sébastien Tanzilli, Gregory Sauder +3 more·Feb 20, 2026
Recent advances in quantum photonics have enabled increasingly robust protocols in optical phase estimation, achieving precisions beyond the standard quantum limit and approaching the Heisenberg limit. While intrinsic losses hinder the realization of...