Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Digital Quantum Simulation of the Holstein-Primakoff Transformation on Noisy Qubits
Kelvin Yip, Alessandro Monteros, Sahel Ashhab +1 more·Feb 19, 2026
Quantum simulation of many-body systems offers a powerful approach to exploring collective quantum dynamics beyond classical computational reach. Although spin and fermionic models have been extensively simulated on digital quantum computers, the sim...
Benchmarking quantum phase-space methods for near-resonant light propagation
Mojdeh S. Najafabadi, Joel F. Corney, Luis Sanchez Soto +1 more·Feb 19, 2026
We study the dynamics of light interacting with a near-resonant atomic medium using the truncated Wigner and positive P phase-space representations. The atomic degrees of freedom are described using the Jordan-Schwinger mapping. The dynamics is first...
A Shadow Enhanced Greedy Quantum Eigensolver
Jona Erle, Balint Koczor·Feb 19, 2026
While ground-state preparation is expected to be a primary application of quantum computers, it is also an essential subroutine for many fault-tolerant algorithms. In early fault-tolerant regimes, logical measurements remain costly, motivating adapti...
Global bifurcations and basin geometry of the nonlinear non-Hermitian skin effect
Heng Lin, Yunyao Qi, Gui-Lu Long·Feb 19, 2026
We study a continuum Hatano--Nelson model with a saturating nonlinear nonreciprocity and analyze its stationary states via the associated phase-space flow. We uncover a global scenario controlled by a subcritical Hopf bifurcation and a saddle-node of...
Formation of Hydroxyl Anion via a 2-Particle 1-Hole Feshbach Resonance in DEA to 2-Propanol: A Joint Experimental and Theoretical Study
Siddique Ali, Meeneskhi Rana, Soumya Ghosh +3 more·Feb 19, 2026
Absolute cross sections for the formation of OH- from 2-propanol (CH3CH(OH)CH3) via dissociative electron attachment (DEA) are reported in the incident electron energy range of 3.5-13 eV. Four fragment anions are observed: OH-, C2H2O-, C2H4O-, and C3...
Phonon-enhanced strain sensitivity of quantum dots in two-dimensional semiconductors
Sumitra Shit, Yunus Waheed, Jithin Thoppil Surendran +4 more·Feb 19, 2026
Two-dimensional semiconductors have attracted considerable interest for integration into emerging quantum photonic networks. Strain engineering of monolayer transition-metal dichalcogenides (ML-TMDs) enables the tuning of light-matter interactions an...
Power attenuation in millimeter-wave and terahertz superconducting rectangular waveguides: linear response, TLS loss, and Higgs-mode nonlinearity
Takayuki Kubo·Feb 19, 2026
Superconducting waveguides are a promising platform for ultralow-loss transmission in the millimeter-wave to terahertz band under cryogenic conditions, with potential applications in astronomical instrumentation and emerging quantum technologies. We ...
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 ...
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...
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...
Entanglement negativity in decohered topological states
Kang-Le Cai, Meng Cheng·Feb 18, 2026
We investigate universal entanglement signatures of mixed-state phases obtained by decohering pure-state topological order (TO), focusing on topological corrections to logarithmic entanglement negativity and mutual information: topological entangleme...
Nonequilibrium Casimir-Polder Force: Motion-induced Thermal-like Effect
D. Reiche, B. Beverungen, K. Busch +1 more·Feb 18, 2026
The Casimir-Polder force is analyzed when an atom is moving at a constant velocity relative to a collection of translationally invariant macroscopic bodies with generic shapes and compositions. The interaction is described within an approach that acc...
Nonlocal prediction of quantum measurement outcomes
Chirag Srivastava, Aparajita Bhattacharyya, Ujjwal Sen·Feb 18, 2026
We define nonlocal predictability as how well one observer can predict another's measurement outcomes without classical communication, given full knowledge of the shared quantum state and measurement settings. The local bound on nonlocal predictabili...
Measurement Induced Subradiance
Ipsita Bar, Aditi Thakar, B. Prasanna Venkatesh·Feb 18, 2026
Preparing subradiant steady states of collectively emitting quantum two-level emitters (TLEs) is hindered by their dark, weakly interacting nature. Existing approaches rely on patterned driving, local control, or structured environments. We propose a...
Squeezed superradiant lasing of a quantum many-body emitter
Da-Wu Xiao, Chong Chen, Ren-Bao Liu·Feb 18, 2026
In conventional lasers, the emitters are typically incoherent, radiating photons independently; in superradiant lasers, many coherent emitters radiate photons collectively, but they essentially do not interact with each other. Here, we present the co...
Reductions of QAOA Induced by Classical Symmetries: Theoretical Insights and Practical Implications
Boris Tsvelikhovskiy, Bao Bach, Jose Falla +1 more·Feb 18, 2026
The performance of the Quantum Approximate Optimization Algorithm (QAOA) is closely tied to the structure of the dynamical Lie algebra (DLA) generated by its Hamiltonians, which determines both its expressivity and trainability. In this work, we show...
Observing quantum many-body dynamics in emergent curved spacetime using programmable quantum processors
Brendan Rhyno, Bastien Lapierre, Smitha Vishveshwara +2 more·Feb 17, 2026
We digitally simulate quantum many-body dynamics in emergent curved backgrounds using 80 superconducting qubits on IBM Heron processors. By engineering spatially varying couplings in the spin-$\frac12$ XXZ chain, consistent with the low-energy descri...
Non-Markovian environment induced Schrödinger cat state transfer in an optical Newton's cradle
Xinyu Zhao, Yan Xia·Feb 17, 2026
In this manuscript, we study the Schrödinger cat state transfer in a quantum optical version of Newton's cradle in non-Markovian environment. Based on a non-Markovian master equation, we show that the cat state can be transferred purely through the m...
Quantum Pontus--Mpemba Effect in Dissipative Quasiperiodic Chains
Yefeng Song, Junxiao Chen, Xiangyu Yang +3 more·Feb 17, 2026
We investigate how quasiperiodic spatial structure enables protocol-induced acceleration in open quantum systems by analyzing the Pontus-Mpemba effect in one-dimensional chains subject to Markovian dephasing. The dynamics are governed by a Lindblad s...