Papers

Selim M. Shahriar, Ruoxi Zhu, Jinyang Li +1 more·Jul 12, 2026

We show that, contrary to conventional understanding, the minimum measurable frequency shift (MMFS) for a single-mode ideal laser is determined by a combination of phase diffusion caused by spontaneous emission and the shot noise caused by the vacuum...

Kagwe A. Muchane·Jul 11, 2026

Given two dense multivectors of the Clifford algebra $C\ell(V, Q)$ with $N=2^{p+q}$ coefficients, the fastest known classical algorithms compute their geometric product in $O(N^{ω/2})$ arithmetic operations, where $ω$ denotes the matrix multiplicatio...

Amin Faraji Astaneh, Parsa Kafashi·Jul 11, 2026

We investigate Krylov spread complexity for states evolving under time-dependent Hamiltonians. For periodically driven systems, we formulate the problem within Floquet theory and show how the Magnus expansion provides a systematic approximation when ...

Bryce-Allen Bagley, Nathaniel Rose, Quintus Kilbourn +1 more·Jul 11, 2026

Brain-computer interfaces (BCIs) are a class of diverse hardware modalities, associated software, and connected devices which are widely used in a variety of fields, including neurosurgery, biomedical data analysis, and neuroimaging. Recent years hav...

Gabriel Caceres-Aravena, Paloma Vildoso, Helena Drüeke +1 more·Jul 11, 2026

The Aharonov-Bohm (AB) effect remains a cornerstone of fundamental and applied physics. In this work, we utilize the AB caging effect originated from an effective magnetic field induced by multi-orbital interactions, creating an all flat band (FB) la...

Shuo Tan, Syed A. Jafar·Jul 11, 2026

A binary $(n,m)$ quantum random access code (QRAC) compresses an $n$-bit classical string into an $m$-qubit quantum state, from which a decoder attempts to recover a randomly selected target bit. Of particular interest is the optimal average probabil...

Amal Elsokary, Hayato Ishida, Ran Wei +2 more·Jul 11, 2026

Quantum networks are advancing towards larger and more operational infrastructures, yet their evaluation remains fragmented across heterogeneous physical platforms, simulators, protocols, and architectural abstractions. Current digital-twin studies f...

Azadeh Alavi, Fatemeh Kouchmeshki, Hossein Akhoundi +1 more·Jul 11, 2026

Dense representation of an $n$-qubit pure state requires $2^n$ complex amplitudes, precluding dense classical materialization at large $n$. We develop Gram-certified resource continuation for structured quantum-representation workloads and ask when a...

Siyuan Ji, Hayato Ishida, Amal Elsokary +6 more·Jul 11, 2026

Quantum technologies are maturing into systems that classical engineering must build, verify and maintain. The model-driven community has begun to respond with quantum-aware pipelines and languages, and the domain models these produce must be synchro...

Li-Li Gao, Zi-Xuan Chen, Long-Jie Li +4 more·Jul 11, 2026

The tripartite quantum Rabi model couples two qubits to a bosonic mode through a collective spin-oscillator interaction, providing a simple setting for studying two-qubit entanglement. In the zero-detuning limit, the triplet part of the spectrum spli...

Sing-Yun Wu, Sheng Yun Wu, I-Min Chiang +1 more·Jul 11, 2026

This work proposes Rank-Refined Quantum-Behaved Particle Swarm Optimization (RR-QPSO) for high-dimensional parameter search in Quantum Molecular Generation (QMG). RR-QPSO targets the optimization bottleneck caused by expensive objective evaluations, ...

Detlev Buchholz·Jul 11, 2026

The limit states of canonical ensembles of a large number of interacting bosons at a given temperature, which are confined by harmonic forces, are studied in the framework of the resolvent algebra. It is shown that the limits satisfy the KMS conditio...

Ya Xiao, Zhen-Fei Zhang, Yan-Xin Rong +3 more·Jul 11, 2026

Quantum correlations are central resources for quantum information processing, yet their ability to manipulate dynamical transmission processes remains largely unexplored. Here, we investigate this ability through backflow, a uniquely interference ph...

Shih-Lung Yu, Ming-Kang Ho, Tai-Yue Li +1 more·Jul 11, 2026

This work presents a matrix product state (MPS) simulation framework for adaptive non-local observable variational quantum circuits (ANO-VQCs) in image super-resolution (SR) beyond the practical limits of statevector simulation. Runtime benchmarks on...

Sabina Drăgoi, Daniel J. Egger·Jul 11, 2026

Combinatorial optimization problems are central to many applications but can be challenging to solve. Quantum approaches such as the Quantum Approximate Optimization Algorithm (QAOA) offer new tools with which to tackle such problems. However, QAOA c...

Rajdeep Paul, Prabuddha Roy, A. K. Pan·Jul 11, 2026

We develop a family of semi-device-independent (SDI) entanglement-assisted prepare-measure (PM) communication games involving two parties, within the $n\rightarrow l$ random-access code (RAC) framework where the sender Alice holds a n-bit string and ...

Sechan Park, Kyeongwon Lee, Mundo Jeong +2 more·Jul 11, 2026

Hybrid Schrodinger-Feynman (HSF) simulation offers an attractive memory-path tradeoff for exact quantum-circuit emulation, but its practical runtime is often dominated by exponential path growth from cross-boundary two-qubit gates. Existing GPU and F...

Xudan Chai, Yanwu Gu, Huiqi Xue +2 more·Jul 11, 2026

Recent progress in quantum physics and quantum technologies is driving quantum computing from the noisy intermediate-scale (NISQ) era toward fault-tolerant operation. High-precision control of two-qubit gates is among the most critical requirements i...

Byeongyong Park, Sanha Kang, Doyeol Ahn +1 more·Jul 11, 2026

Sample-based quantum diagonalization (SQD) diagonalizes a Hamiltonian in a compact subspace built from quantum samples, and its performance often relies on recovery procedures that exploit native constraints such as particle-number symmetry. For a br...

Y. T. Wang, X. Z. Zhang·Jul 11, 2026

We study a quadratic open SSH chain with a single-site loss and show that the many-body fermionic Lindblad problem admits an exact reduction to a finite non-Hermitian one-body matrix with a rank-one imaginary impurity. Its rapidities generate the com...