Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Information Geometry of Multicomponent Superconducting Fluctuation Transport
Zi-Ting Sun, Ying-Ming Xie, Naoto Nagaosa·Jun 14, 2026
Quantum geometry underlies many electronic responses, but its transport signatures have so far been established mainly for pure single-particle Bloch states. Whether collective many-body fluctuations possess a measurable quantum geometry remains larg...
A Gauge-Covariant Geometric Framework for Non-Hermitian Quantum Systems
Gargi Das, Sudhanshu Shekhar, Bhabani Prasad Mandal·Jun 14, 2026
We develop a comprehensive, gauge-covariant geometric framework for non-Hermitian quantum systems in the quasi-Hermitian regime, that is, the region of parameter space where the non-Hermitian Hamiltonian admits a real spectrum and a positive-definite...
Finite-Dimensional Type I von Neumann Algebras in PyTorch: A GPU-Accelerated Framework for Random Block-Diagonal Operators
Irina Nikolaeva, Andrej Novikov·Jun 14, 2026
We present \texttt{torch\_vn\_algebra}, an open-source Python library built on PyTorch for numerical experiments with finite-dimensional Type I von Neumann algebras (direct sums of matrix algebras). The library provides: $\bullet$ a compact batched t...
Complete Relational Description of Spin in a Quantum Background
Hannah Troger, Ofek Bengyat, Thomas D. Galley +1 more·Jun 14, 2026
The standard description of the state of a spin in quantum mechanics presupposes externally fixed directions -- a classical background. Can a spin be fully described instead in relation to other quantum mechanical systems? Poulin suggested twenty yea...
Trainable Quantum Channels as Computational Primitives for Quantum Learning
Jingwei Wen, Ling Qian, Shijie Wei +1 more·Jun 14, 2026
Variational quantum learning is traditionally constrained to unitary dynamics, often treating quantum channels as detrimental noise. In this work, we reformulate the quantum channels as trainable computational primitives and establish a non-unitary q...
Spin-induced and orbital quantum backflow in Pauli theory
Tomasz Radożycki·Jun 14, 2026
We show that quantum backflow in spin-$\tfrac{1}{2}$ systems within the Pauli framework can arise from spin-dependent contributions to the probability current. We construct explicit two-mode states in which the orbital current reduces to a uniform dr...
Quantum vortex in a fluid flow: negative effective mass and a novel mechanism for turbulence formation
S. V. Talalov·Jun 14, 2026
We explore the movement of a thin, circular quantum vortex filament within an infinite cylindrical pipe. The fluid surrounding the vortex ring moves through the pipe at a non-zero velocity denoted by $v$. Our study examines the energy spectrum $E = E...
MAPS: A Novel Multi-Axial Projective Sphere for Geometrically Visualizing Higher d-Valued Quantum State-Space of Qudits
Ali Al-Bayaty·Jun 14, 2026
Visualizing the d-valued quantum state-space of quantum systems serves as a foundational pillar for the scientific research and practical applications in quantum computing and information science, where d >= 2. The 2-valued quantum states of a qubit ...
Noise-Adaptive Predictive Dynamical Decoupling
Ali Abu-Nada, Subhashish Banerjee, Lian-Ao Wu·Jun 14, 2026
Protecting quantum coherence against realistic environmental noise remains one of the fundamental obstacles to scalable quantum technologies. We develop a noise-adaptive dynamical decoupling framework that combines analytical open-quantum-system mode...
Comparative Performance Analysis of NIST PQC Standards: From STM32 Software Limitations to FPGA-SoC Acceleration
Mustafa Akif Yıldırım, Osman Tokluoglu·Jun 14, 2026
The rapid advancement of quantum computing poses a significant threat to classical public-key cryptographic systems, necessitating the transition to Post-Quantum Cryptography (PQC). This study investigates the implementation challenges of NISTstandar...
Quantum coherence and Leggett-Garg inequality
A. Jalal, S. M. Fazeli, M. M. Ettefaghi·Jun 14, 2026
In this paper, we attempt to establish the relationship between quantum coherence and the violation of the Leggett-Garg inequality. In particular, employing the Lindblad equation, we obtain the pseudo-density matrix for a damping system to study the ...
High-performance gates on trapped ion qubits using counterpropagating pulse-shaped laser beams
Evangelos Piliouras, Hisham Amer, Susan M. Clark +9 more·Jun 14, 2026
Highly-localized light-matter interactions are necessary for scaling trapped-ion architectures. In hyperfine qubits, counterpropagating beams generate entangling gates by coupling with motion, but this effect is undesirable during single-qubit operat...
Synthesizing Arbitrary Non-Hermitian Hamiltonian with Stochastic Floquet Engineering
Lingzhen Guo, Hui Jing·Jun 14, 2026
The conventional Floquet engineering scheme synthesizes a given target Hamiltonian with a deterministic temporal periodic driving field. In this work, we introduce the stochastic Floquet engineering scheme that can synthesize an arbitrary non-Hermiti...
Quantum Cinema: An Interactive Cinematic Exploration of Quantum Computing Hardware via Generative World Models
Aoyu Zhang, Dongping Liu, Luyao Zhang·Jun 14, 2026
Quantum computing promises transformative advances across science and industry, yet the physical hardware that enables these computations remains invisible to the public: quantum processors operate inside sealed dilution refrigerators at temperatures...
A New Definition of Quantum Superposition
Stephen Bruce Sontz·Jun 14, 2026
The usual description of the superposition of two (pure quantum) states is ambiguous, since the binary operation of summation in a Hilbert space does not pass down to the quotient projective space. Even though Dirac noted this as early as 1930, it is...
Dressed Floquet scars from protected zero modes in a Rydberg chain
Saptadip Roy, Bhaskar Mukherjee, K. Sengupta +1 more·Jun 14, 2026
In this Letter, we present an approximate analytic construction of two zero quasienergy quantum many-body scars in a periodically driven model of Rydberg atoms on a ring, which persist over a range of driving amplitudes and frequencies for finite siz...
Quantum Illumination with Symmetry-Constrained Random Unitaries
Sooryansh Asthana, Sai Vinjanampathy·Jun 14, 2026
Quantum illumination provides a quantum advantage in detecting weakly reflecting objects embedded in a noisy environment, even when environmental noise destroys most of the initial entanglement. We investigate this advantage using Haar-random probe s...
Degeneracy Cannot Violate the Quantum Hamming Bound
Yu-Xuan Zhang, Jing-Ling Chen·Jun 14, 2026
The quantum Hamming bound is the standard finite-length sphere-packing bound for exact correction of arbitrary qubit errors. Whether degeneracy can evade this bound has remained unresolved in full generality for nearly three decades: distinct correct...
Generalized symmetries, invariant solutions and conservation laws in the Jaynes-Cummings model
Luis M. Piñuelas, Pablo C. López Vázquez, Alexander Yakhno·Jun 14, 2026
In this study, we investigate the Jaynes--Cummings model (JCM) using Lie symmetry analysis and conservation-law theory. The dynamics is formulated as a system of partial differential equations by projecting the von Neumann equation onto the atomic de...
Suppressing Intrinsic Spin-Phonon Errors in Trapped-Ion Quantum Simulation
Dylan Sheils, James Wang, Or Katz·Jun 14, 2026
Trapped-ion quantum simulators realize programmable spin models through phonon-mediated interactions. For Hamiltonians with noncommuting terms, however, the same phonon bus generates intrinsic spin-phonon errors that strongly distort the target dynam...