Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Ultra-precise phase estimation without mode entanglement
Mikhail S. Podoshvedov, Sergey A. Podoshvedov·Mar 10, 2026
We explore optical quantum engineering of phase-parameterized continuous-variable (CV) probe states to exploit nonclassical light to solve the problem of precise phase estimation. The optical interferometer consists of a single beam splitter (BS) wit...
Analytic formulae for non-local magic in bipartite systems of qutrits and ququints
Giorgio Busoni, John Gargalionis, Ewan N. V. Wallace +1 more·Mar 10, 2026
We conjecture analytic expressions for the non-local magic of bipartite pure qudit states of prime local dimension. Our construction relies on the Schmidt-aligned state attaining the minimum over local unitaries, a hypothesis that we support with num...
Sensing coherent phonon dynamics in solids with delayed even harmonics
Jinbin Li, Ulf Saalmann, Hongchuan Du +1 more·Mar 10, 2026
High harmonics have emerged as a powerful ultrafast probe of phonon dynamics and electron-phonon interactions in solids, with most studies focusing on odd harmonics. Here, in a pump-probe setup with variable delay, we theoretically investigate how ev...
Critical States Preparation With Deep Reinforcement Learning
Jia-Wen Yu, Yi-Ming Yu, Ke-Xiong Yan +4 more·Mar 10, 2026
The fast and efficient preparation of quantum critical states is a challenging yet crucial task for various quantum technologies. This difficulty is most particularly for systems near a quantum phase transition, where the closure of the energy gap fu...
Relaxed parameter sensitivity for multiphoton quantum resonances
Hao-Lin Zhong, Ke-Xiong Yan, Yi-Ming Yu +4 more·Mar 10, 2026
Multiphoton resonances demonstrate the physical significance of counter-rotating wave terms in light-matter interactions. These resonances, however, are sensitive to detuning errors, making the phenomena challenging to experimentally observe. In this...
On the Existence of Algebraic Equiangular Lines
Igor Van Loo, Frédérique Oggier·Mar 10, 2026
We consider real and complex equiangular lines, generated by unit vectors. We show that, for an arbitrary dimension $d$, if there exists a set of $d^2$ equiangular unit vectors in $\mathbb{C}^d$, then there must exist a set of $d^2$ equiangular unit ...
Emergence of Classical Dynamics from a Random Matrix Schrödinger Model
Alexey A. Kryukov·Mar 10, 2026
The Newtonian motion of a macroscopic particle is derived from the linear Schrödinger equation with a Hamiltonian consisting of the free-particle term and a random Hamiltonian drawn from the Gaussian Unitary Ensemble. The random term models interacti...
Enhancing light-matter coupling for exploring chaos in the quantum Rabi model
Yan-Song Hu, Yuan Qiu, Ye-Hong Chen +2 more·Mar 10, 2026
Accessing chaos in the quantum Rabi model (QRM) usually requires operating far from resonance, combined with ultra- or deep-strong light-matter coupling. This makes direct experiments challenging. In this manuscript, we propose a solution to this cha...
Topological phase transition of deformed ${\mathbb Z}_3$ toric code
Yun-Tak Oh, Hyun-Yong Lee·Mar 10, 2026
We investigate the topological phase transitions of the deformed $\mathbb{Z}_3$ toric code, constructed by applying local deformations to the $\mathbb{Z}_3$ cluster state followed by projective measurements. Using the loop-gas and net configuration f...
Metrology for Quantum Hardware Standardization -- Charting a Pathway: A Strategic Review
Nobu-Hisa Kaneko·Mar 10, 2026
Advances in quantum mechanics have long underpinned metrology by enabling practical realizations of units through quantum effects. With the 2019 SI revision, traceability is anchored in defined fundamental constants, reinforcing the quantum-mechanica...
Reconfigurable Superconducting Quantum Circuits Enabled by Micro-Scale Liquid-Metal Interconnects
Zhancheng Yao, Nicholas E. Fuhr, Nicholas Russo +3 more·Mar 10, 2026
Modular architectures are a promising route toward scalable superconducting quantum processors, but finite fabrication yield and the lack of high quality temporary interconnects impose fundamental limitations on system size. Here, we demonstrate chip...
The helical quantum two-body problem and its wave packet dynamics
Peter Schmelcher·Mar 10, 2026
We explore the helical quantum two-body problem i.e. two repulsively Coulomb interacting particles confined to move along a helix. The effective potential possesses a tunable number of potential wells superimposed on the repulsive Coulomb interaction...
Recent advances in Ultralong-range Rydberg molecules
Jingxu Bai, Yuechun Jiao, Xiao-Qiang Shao +2 more·Mar 10, 2026
Rydberg molecule, formed by one or more Rydberg atoms, exhibits remarkable properties, including an exceptionally large spatial extent, rich rovibrational level structures, permanent electric dipole moments, and a pronounced sensitivity to external f...
Toda-like Hamiltonian as a probe for quantized prey-predator dynamics
Alex E. Bernardini, Orfeu Bertolami·Mar 10, 2026
Phase-space features of a reduced version of the Toda-like Hamiltonian, $\mathcal{H}(x,\,k)$, written in a form constrained by the condition $\partial^2 \mathcal{H} / \partial x \partial k = 0$, with $x$ and $k$ as canonically conjugate variables, ar...
Universal Family-Vicsek scaling in quantum gases far from equilibrium
Kiryang Kwon, Kazuya Fujimoto, Junhyeok Hur +6 more·Mar 10, 2026
Fluctuations in the growing surfaces of classical systems can exhibit universal scaling behavior, known as Family-Vicsek (FV) scaling. Although this phenomenon was originally discovered in classical stochastic models, recent theoretical studies have ...
Genuinely entangled subspaces and strongly nonlocal unextendible biseparable bases in four-partite systems
Huaqi Zhou, Ting Gao, Fengli Yan·Mar 10, 2026
A set of orthogonal pure states is an unextendible biseparable basis (UBB), which means that its complementary subspace contains only genuinely entangled states. UBBs thus serve as an effective tool for constructing genuinely entangled subspaces. If ...
Scientific Rigor and Human Warmth: Remembering Vladimir Sidorenko (1949-2025)
Christian Deppe, Haider Al Kim, Jessica Bariffi +4 more·Mar 10, 2026
During the Foundations of Future Communication Systems (FFCS) conference in Braunschweig, a dedicated memorial session was held in honor of Dr. Vladimir (Volodya) Sidorenko (1949-2025). The session, chaired by Minglai Cai, brought together colleagues...
Automating Detection and Root-Cause Analysis of Flaky Tests in Quantum Software
Janakan Sivaloganathan, Ainaz Jamshidi, Andriy Miranskyy +1 more·Mar 9, 2026
Like classical software, quantum software systems rely on automated testing. However, their inherently probabilistic outputs make them susceptible to quantum flakiness -- tests that pass or fail inconsistently without code changes. Such quantum flaky...
Experimental demonstration of optimal measurement for unambiguously discriminating asymmetric qudit states
Kang-Min Hu, Min Namkung, Myung-Hyun Sohn +1 more·Mar 9, 2026
Identification of nonorthogonal quantum states without error is crucial for various applications in quantum information technology, as well as the foundations of quantum physics. Theoretical studies have proposed measurements that maximize the succes...
High-optical-depth, sub-Doppler-width absorption lines at telecom wavelengths in hot, optically driven rubidium vapor
Inna Kviatkovsky, Lucas Pache, Viola-Antonella Zeilberger +4 more·Mar 9, 2026
Doppler broadening presents a major limitation for high-resolution spectroscopy and nonlinear optics in room-temperature atomic vapors. Here, we demonstrate the suppression of Doppler broadening accompanied by pronounced absorption on the upper trans...