Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Tune-out wavelength for the thulium atom near 576 nm
Ivan Pyrkh, Arjuna Rudnev, Daniil Pershin +12 more·Feb 24, 2026
We report the theoretical prediction and measurement of a tune-out wavelength for the ground state of the thulium atom in a linearly polarized optical dipole trap with a wavelength of approximately 576 nm. The measurements were conducted using a comb...
Spatial Entanglement Sudden Death in Spin Chains at All Temperatures
Samuel O. Scalet·Feb 24, 2026
We prove a finite entanglement length for the Gibbs state of any local Hamiltonian on a spin chain at any finite temperature: After removing an interval of size at least equal to the entanglement length, the remaining left and right half-chains are i...
Task Concurrency and Compatibility in Measurement-Based Quantum Networks
Jakob Kaltoft Søndergaard, René Bødker Christensen, Petar Popovski·Feb 24, 2026
Measurement-Based Quantum Networks (MBQNs) rely on multipartite pre-shared entanglement resources to satisfy entanglement requests. Traditional designs optimize these resources for individual tasks, neglecting that multiple tasks may arrive concurren...
Qudit stabiliser codes for $\mathbb{Z}_N$ lattice gauge theories with matter
Luca Spagnoli, Alessandro Roggero, Nathan Wiebe·Feb 24, 2026
In this work we extend the connection between Quantum Error Correction (QEC) and Lattice Gauge Theories (LGTs) by showing that a $\mathbb{Z}_N$ gauge theory with prime dimension $N$ coupled to dynamical matter can be expressed as a qudit stabilizer c...
Space Isotropy and Homogeneity Principles Determine the Maximum Nonlocality of Nature
Akbar Fahmi·Feb 24, 2026
One of the fundamental questions in physics concerns the relation between spacetime and quantum entanglement. The spacetime is usually considered as a fixed background physical space, and the quantum entanglement is usually manifested as a ``spooky a...
Characterization of Phase Transitions in a Lipkin-Meshkov-Glick Quantum Brain Model
Elvira Romera, Joaquín J. Torres·Feb 24, 2026
In this work we analyze the emergence of phase transitions in a quantum brain model inspired by the Lipkin-Meshkov-Glick framework, where biologically motivated synaptic feedback modulates the collective interaction in a nonlinear and state-dependent...
First- and Second-Order Digital Quantum Simulation of Three-Level Jaynes-Cummings Dynamics on Superconducting Quantum Processors
J. Thirunirai Selvam, S. Saravana Veni, Ria Rushin Joseph·Feb 24, 2026
This work presents a digital quantum simulation of a three-level atomic system interacting with a single-mode electromagnetic field based on the Jaynes-Cummings model, implemented on IBM Quantum superconducting processors. A qutrit is encoded using t...
Non-Clifford symmetry protected topological higher-order cluster states in multi-qubit measurement-based quantum computation
Motohiko Ezawa·Feb 24, 2026
A cluster state is a strongly entangled state, which is a source of measurement-based quantum computation. It is generated by applying controlled-Z (CZ) gates to the state $\left\vert ++\cdots +\right\rangle $. It is protected by the $\mathbb{Z}_{2}^...
Measurement-Free Ancilla Recycling via Blind Reset: A Cross-Platform Study on Superconducting and Trapped-Ion Processors
Sangkeum Lee·Feb 24, 2026
Ancilla reuse in repeated syndrome extraction couples reset quality to logical-cycle latency. We evaluate blind reset -- unitary-only recycling via scaled sequence replay -- on IQM Garnet, Rigetti Ankaa-3, and IonQ under matched seeds, sequence lengt...
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...
Kondo breakdown as an entanglement transition driven by continuous measurement
Debraj Debata, Abhirup Mukherjee, Siddhartha Lal·Feb 24, 2026
We study the breakdown of Kondo screening by a local magnetic field from the perspective of a measurement-driven entanglement transition in a monitored quantum system. Here, the Kondo coupling leads to the growth in entanglement of an impurity spin w...
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...
Assessing the Practical Feasibility of the Clader-Jacobs-Sprouse Quantum Algorithm for Calculating Radar Cross Sections
Edward Parker, Nicholas A. O'Donoughue, Alvin Moon +1 more·Feb 24, 2026
In 2013, Clader, Jacobs, and Sprouse developed a quantum computing algorithm that solves electromagnetic scattering problems exponentially faster than the best known classical algorithm for that problem. We examine this quantum algorithm's potential ...
Distilling Magic States in the Bicycle Architecture
Shifan Xu, Kun Liu, Patrick Rall +2 more·Feb 24, 2026
Magic State Distillation is considered to be one of the promising methods for supplying the non-Clifford resources required to achieve universal fault tolerance. Conventional MSD protocols implemented in surface codes often require multiple code bloc...
Aging of coupled qubits
Huining Zhang, Dianzhen Cui, W. Wang +1 more·Feb 24, 2026
The aging transition refers to the shift from an oscillatory state to a globally ceased state due to some forms of deterioration in classical physics. Similar behavior has also been observed in quantum oscillators. Although it has received extensive ...
Hilbert Space Black Hole Analog: Unidirectional Transport without Driving
Elvira Bilokon, Valeriia Bilokon, Frank Großmann +2 more·Feb 24, 2026
Black holes permit matter to cross their event horizon in only one direction. We show that interacting bosons in optical lattices with asymmetric barrier exhibit an analogous phenomenon, creating unidirectional quantum transport without external driv...
Fundamentals of Quantum Machine Learning and Robustness
Lirandë Pira, Patrick Rebentrost·Feb 24, 2026
Quantum machine learning (QML) sits at the intersection of quantum computing and classical machine learning, offering the prospect of new computational paradigms and advantages for processing complex data. This chapter introduces the fundamentals of ...
Is a covariant virtual tachyon viable?
Krzysztof Jodłowski·Feb 24, 2026
Sidney Coleman has noted that superluminal particles or observers would be able to go back in time and have no definite trajectory according to subluminal observers, while not violating Lorentz invariance [1]. Recently, Dragan and Ekert have signific...
A Unified Error Correction Code for Universal Quantum Computing with Identical Particles
S. L. Wu, Lian-Ao Wu·Feb 24, 2026
We present a universal fault-tolerant quantum computing architecture based on identical particle qubits (IPQs), where we find that the first-order IPQ - bath interaction fundamentally differs from the conventional first-order qubit-bath interaction. ...
Toward a CMOS-integrated quantum diamond biosensor based on NV centers
Ioannis Varveris, Gianni D. Aliberti, Felix J. Barzilaij +6 more·Feb 24, 2026
We report progress toward a CMOS-integrated quantum diamond biosensing platform that combines nitrogen-vacancy (NV) centers in diamond with a custom 40 nm CMOS Single-Photon Avalanche Diode (SPAD) array. The system integrates on-chip active quenching...