Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Dissipative Quantum Battery in the Ultrastrong Coupling Regime Between Two Oscillators
Yu-qiang Liu, Yi-jia Yang, Zheng Liu +6 more·Feb 16, 2026
In this work, we propose an open quantum battery that stores and releases energy by employing a two-mode ultrastrongly coupled bosonic system, with one mode (the charger) coupled to an independent heat reservoir. Our results demonstrate that both the...
Strong Collective Chiroptical Response from Electric-Dipole Interactions in Atomic Systems
Marcella L. Xavier, Felipe A. Pinheiro, Romain Bachelard·Feb 16, 2026
Chiroptical responses in atomic systems are usually weak, as they arise from the interference between electric- and much weaker magnetic-dipole transitions. We show that atoms arranged in chiral geometries can instead exhibit a strong collective chir...
Navigating Hype, Interdisciplinary Collaboration, and Industry Partnerships in Quantum Information Science and Technology: Perspectives from Leading Quantum Educators
Liam Doyle, Fargol Seifollahi, Chandralekha Singh·Feb 16, 2026
The rapid advancement of quantum information science and technology (QIST) has generated significant attention from people in academia, industry, and the public. Recent advances in QIST have led to both opportunities and challenges for students and r...
Do we have a quantum computer? Expert perspectives on current status and future prospects
Liam Doyle, Fargol Seifollahi, Chandralekha Singh·Feb 16, 2026
The rapid growth of quantum information science and technology (QIST) in the 21st century has created both excitement and uncertainty about the field's trajectory. This qualitative study presents perspectives from leading quantum researchers, who are...
Near-Infrared and Telecommunication-Wavelength Photon-Pair Source in Optical Fiber
Keshav Kapoor, Dong Beom Kim, Kriti Shetty +1 more·Feb 16, 2026
We present a photon-pair source in commercially available optical fiber that produces paired photons at telecommunication and near-infrared (NIR) wavelengths. The highly nondegenerate pairs are 700 nm apart: one in the 1500 nm E- and S-band telecommu...
Tomography by Design: An Algebraic Approach to Low-Rank Quantum States
Shakir Showkat Sofi, Charlotte Vermeylen, Lieven De Lathauwer·Feb 16, 2026
We present an algebraic algorithm for quantum state tomography that leverages measurements of certain observables to estimate structured entries of the underlying density matrix. Under low-rank assumptions, the remaining entries can be obtained solel...
Intractability of Witnessing Entangled Measurements Device Independently
Peter Bierhorst·Feb 16, 2026
Protocols have been previously proposed to certify the presence of an entangled measurement in a fully device-independent manner. Here, I provide models for these protocols in which the claimed measurement is not entangled, and demonstrate it is alwa...
Quantization as a Categorical Equivalence for Hilbert Bimodules and Lagrangian Relations
Benjamin H. Feintzeig·Feb 16, 2026
It is well known that classical and quantum theories carry distinct types of representations, each type of representation corresponding to possible values of generalized charges in the classical or quantum context. This paper demonstrates a sense in ...
Efficient quantum circuits for high-dimensional representations of SU(n) and Ramanujan quantum expanders
Vishnu Iyer, Siddhartha Jain, Stephen Jordan +1 more·Feb 16, 2026
We present efficient quantum circuits that implement high-dimensional unitary irreducible representations (irreps) of $SU(n)$, where $n \ge 2$ is constant. For dimension $N$ and error $ε$, the number of quantum gates in our circuits is polynomial in ...
Phases of matrix-product states with symmetries and measurements: Finite nilpotent groups
David Gunn, Georgios Styliaris, Barbara Kraus +1 more·Feb 16, 2026
We study phases of one-dimensional matrix-product states (MPS) when transformations are restricted to symmetric local circuits supplemented with symmetric measurements and feedforward (G-CMF). Building on the framework introduced in Gunn et al., Phys...
Beyond Reinforcement Learning: Fast and Scalable Quantum Circuit Synthesis
Lukas Theißinger, Thore Gerlach, David Berghaus +1 more·Feb 16, 2026
Quantum unitary synthesis addresses the problem of translating abstract quantum algorithms into sequences of hardware-executable quantum gates. Solving this task exactly is infeasible in general due to the exponential growth of the underlying combina...
On the quantum mechanics of finite-mass observers
Juanca Carrasco-Martinez·Feb 16, 2026
The principle of relativity is extended to accommodate finite-mass observers with quantum properties by introducing two operational requirements: (i) equivalence of observers at the level of transition amplitudes, and (ii) the impossibility for an ob...
GKP-inspired high-dimensional superdense coding with energy-time entanglement
Kai-Chi Chang, Arjun Mirani, Murat Can Sarihan +4 more·Feb 16, 2026
Superdense coding, the application of entanglement to boost classical communication capacity, is a cornerstone of quantum communication. In this paper, we propose a high-dimensional superdense coding protocol using energy-time entangled states. These...
Inhomogeneous quenches and GHD in the $ν= 1$ QSSEP model
Angelo Russotto, Filiberto Ares, Pasquale Calabrese +1 more·Feb 16, 2026
We investigate the dynamics of the $ν=1$ Quantum Symmetric Simple Exclusion Process starting from spatially inhomogeneous initial states. This one-dimensional system of free fermions has time-dependent stochastic hopping amplitudes that are uniform i...
Experimental characterization of the hierarchy of quantum correlations in top quark pairs
Yoav Afik, Regina Demina, Alan Herrera +3 more·Feb 16, 2026
Recent results from the Large Hadron Collider have demonstrated quantum entanglement of top quark-antiquark pairs using the spin degree of freedom. Based on the doubly differential measurement of the spin density matrix of the top quark and antiquark...
Spectral signatures of nonstabilizerness and criticality in infinite matrix product states
Andrew Hallam, Ryan Smith, Zlatko Papić·Feb 16, 2026
While nonstabilizerness (''magic'') is a key resource for universal quantum computation, its behavior in many-body quantum systems, especially near criticality, remains poorly understood. We develop a spectral transfer-matrix framework for the stabil...
Triangular tensor networks, pencils of matrices and beyond
Alessandra Bernardi, Fulvio Gesmundo·Feb 16, 2026
We study tensor network varieties associated with the triangular graph, with a focus on the case where one of the physical dimensions is 2. This allows us to interpret the tensors as pencils of matrices. We provide a complete characterization of thes...
Hidden Twisted Sectors and Exponential Degeneracy in Root-of-Unity XXZ Heisenberg Chains
Yongao Hu, Felix Gerken, Thore Posske·Feb 16, 2026
Recently, product states have been identified as simple-structured eigenstates of XXZ Heisenberg spin models in arbitrary dimensions, occurring at anisotropy values corresponding to certain roots of unity. Yet, the product states typically only span ...
Controlled Theory of Skyrmion Chern Bands in Moiré Quantum Materials: Quantum Geometry and Collective Dynamics
Yi-Hsien Du·Feb 16, 2026
Recent experiments in moiré quantum materials exhibit quantized Hall states without an external magnetic field, motivating continuum mechanisms based on smooth moiré-periodic pseudospin textures. We present a controlled theory of skyrmion Chern bands...
Low Depth Unitary Coupled Cluster Algorithm for Large Chemical Systems
Jeremy Canfield, Dominika Zgid, J K Freericks·Feb 16, 2026
The unitary coupled cluster (UCC) algorithm is one of the most promising implementations of the variational quantum eigensolver for quantum computers. However, for large systems, the number of UCC factors leads to deep quantum circuits, which are pro...