Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Fault-tolerant interfaces for quantum LDPC codes
Matthias Christandl, Omar Fawzi, Ashutosh Goswami·Feb 18, 2026
The preparation of a quantum state using a noisy quantum computer (gate noise strength $δ$), will necessarily affect an O($δ$)-fraction of the qubits, no matter which protocol is used. Here, we show that fault-tolerant quantum state preparation can b...
Adaptive Aborting Schemes for Quantum Error Correction Decoding
Sanidhay Bhambay, Prakash Murali, Neil Walton +1 more·Feb 18, 2026
Quantum error correction (QEC) is essential for realizing fault-tolerant quantum computation. Current QEC controllers execute all scheduled syndrome (parity-bit) measurement rounds before decoding, even when early syndrome data indicates that the run...
Free Quantum Computing
Jacques Carette, Chris Heunen, Robin Kaarsgaard +2 more·Feb 18, 2026
Quantum computing improves substantially on known classical algorithms for various important problems, but the nature of the relationship between quantum and classical computing is not yet fully understood. This relationship can be clarified by free ...
Multi-objective optimization and quantum hybridization of equivariant deep learning interatomic potentials on organic and inorganic compounds
G. Laskaris, D. Morozov, D. Tarpanov +6 more·Feb 18, 2026
Allegro is a machine learning interatomic potential (MLIP) model designed to predict atomic properties in molecules using E(3) equivariant neural networks. When training this model, there tends to be a trade-off between accuracy and inference time. F...
The empirical laws for Majorana fields in a curved spacetime
Hideyasu Yamashita·Feb 18, 2026
This article is a sequel to our previous paper (arXiv:2511.12311), where we considered the conceptual problem on the empirical laws for the Klein\textendash Gordon quantum field theory in curved spacetime (QFTCS), and we will consider the similar pro...
From superradiance to collective EIT in three-level ensembles
Hugo Sanchez, Luis F. A. da Silva, Mickel A. Ponte +2 more·Feb 18, 2026
We investigate the collective dynamics of a three-level ensemble under the Dicke limit, revealing a unified connection between superradiant emission and electromagnetically induced transparency (EIT). Our results show that the transient superradiant ...
In situ calibration of microwave attenuation and gain using a cryogenic on-chip attenuator
Thomas Descamps, Linus Andersson, Vittorio Buccheri +3 more·Feb 18, 2026
Accurate in situ calibration of microwave attenuation and amplification-chain noise is essential for superconducting quantum circuits. We demonstrate a compact, self-calibrating cryogenic noise source based on an on-chip chromium attenuator that can ...
When Does Quantum Annealing Outperform Classical Methods? A Gradient Variance Framework
Vishwajeet Ohal, Pierre Boulanger·Feb 18, 2026
Quantum annealing has emerged as a promising approach for solving NP-hard optimization problems, leveraging quantum phenomena such as quantum tunneling to navigate complex energy landscapes. However, the extent to which quantum tunneling contributes ...
Dissipation as a Resource: Synchronization, Coherence Recovery, and Chaos Control
Debabrata Mondal, Lea F. Santos, S. Sinha·Feb 18, 2026
Dissipation is commonly regarded as an obstacle to quantum control, as it induces decoherence and irreversibility. Here we demonstrate that dissipation can instead be exploited as a resource to reshape the dynamics of interacting quantum systems. Usi...
Neural Network Discovery of Paired Wigner Crystals in Artificial Graphene
Conor Smith, Yubo Yang, Zhou-Quan Wan +3 more·Feb 18, 2026
Moiré systems have emerged as an exciting tunable platform for engineering and probing quantum matter. A large number of exotic states have been observed, stimulating intense efforts in experiment, theory, and simulation. Utilizing a neural-network-b...
Quantum Circuits as a Dynamical Resource to Learn Nonequilibrium Long-Range Order
Fabian Ballar Trigueros, Markus Heyl·Feb 18, 2026
Equilibrium statistical ensembles impose stringent constraints on phases of quantum matter. For example, the Mermin-Wagner theorem prohibits long-range order in low-dimensional systems beyond the ground state. Here, we show that quantum circuits can ...
Entropic Barriers and the Kinetic Suppression of Topological Defects
Yi-Lin Tsao, Zhu-Xi Luo·Feb 18, 2026
Many quantum phases, from topological orders to superfluids, are destabilized at finite temperature by the proliferation and motion of topological defects such as anyons or vortices. Conventional protection mechanisms rely on energetic gaps and fail ...
Controlling energy spectra and skin effect via boundary conditions in non-Hermitian lattices
S Rahul, Pasquale Marra·Feb 18, 2026
Non-Hermitian systems exhibit unique spectral properties, including the non-Hermitian skin effect and exceptional points, often influenced by boundary conditions. The modulation of these phenomena by generalized boundary conditions remains unexplored...
Singular three-point density correlations in two-dimensional Fermi liquids
Pok Man Tam, Charles L. Kane·Feb 18, 2026
We characterize a singularity in the equal-time three-point density correlations that is generic to two-dimensional interacting Fermi liquids. In momentum space where the three-point correlation is determined by two wavevectors $\mathbf{q}_1$ and $\m...
Finite-Temperature Dynamical Phase Diagram of the $2+1$D Quantum Ising Model
Lucas Katschke, Roland C. Farrell, Umberto Borla +2 more·Feb 18, 2026
Mapping finite-temperature dynamical phase diagrams of quantum many-body models is a necessary step towards establishing a framework of far-from-equilibrium quantum many-body universality. However, this is quite difficult due, in part, to the severe ...
From Multipartite Entanglement to TQFT
Michele Del Zotto, Abhijit Gadde, Pavel Putrov·Feb 18, 2026
At long distances, a gapped phase of matter is described by a topological quantum field theory (TQFT). We conjecture a tight and concrete relationship between the genuine $(d+1)$-partite entanglement -- labelled by a $d$-dimensional manifold $M$ -- i...
Numerical study of non-relativistic quantum systems and small oscillations induced in a helically twisted geometry
C. F. S. Pereira, R. L. L. Vitória, A. R. Soares +3 more·Feb 18, 2026
We investigate bound states of a non-relativistic scalar particle in a three-dimensional helically twisted (torsional) geometry, considering both the free case and the presence of external radial interactions. The dynamics is described by the Schrödi...
Intermodal quantum key distribution over an 18 km free-space channel with adaptive optics and room-temperature detectors
Edoardo Rossi, Ilektra Karakosta-Amarantidou, Matteo Padovan +9 more·Feb 18, 2026
Intermodal quantum key distribution at telecom wavelengths provides a hybrid interface between fiber connections and free-space links, both essential for the realization of scalable and interoperable quantum networks. Although demonstrated over short...
Exponential concentration of fluctuations in mean-field boson dynamics
Matias Gabriel Ginzburg, Simone Rademacher, Giacomo De Palma·Feb 18, 2026
We study the mean-field dynamics of a system of $N$ interacting bosons starting from an initially condensated state. For a broad class of mean-field Hamiltonians, including models with arbitrary bounded interactions and models with unbounded interact...
Amplification of bosonic interactions through squeezing in the presence of decoherence
Ankit Tiwari, Cecilia Cormick, Christian Arenz·Feb 18, 2026
We consider the amplification of bosonic interactions through parametric control that implements squeezing along orthogonal quadratures. We show that bosonic interactions described by certain classes of quadratic and quartic Hamiltonians can be enhan...