Papers

Yazhen Wang·Jan 4, 2026

Fast computational algorithms are in constant demand, and their development has been driven by advances such as quantum speedup and classical acceleration. This paper intends to study search algorithms based on quantum walks in quantum computation an...

Keita Takahashi, Shu Tanaka·Jan 4, 2026

We investigate obtaining intermediate quantum states during the quantum annealing process to address the limitation of the linear weighted sum method in multi-objective optimization, which inherently fails to reach non-convex regions of the Pareto fr...

Shuo Zhou, Zhaokai Pan, Weiyuan Gong +1 more·Jan 4, 2026

Hamiltonian simulations are key subroutines in adiabatic quantum computation, quantum control, and quantum many-body physics, where quantum dynamics often happen in the low-energy sector. In contrast to time-independent Hamiltonian simulations, a com...

Xue-Min Yang, Hao Lin, Jian Li +3 more·Jan 4, 2026

The zero-mode corner states in the gap of two-dimensional non-Hermitian Su-Schrieffer-Heeger model are robust to infinitesimal perturbations that preserve chiral symmetry. However, we demonstrate that this general belief is no longer valid in large-s...

Ignacio R. Sola, Sebastian C. Carrasco, Vladimir S. Malinovsky +2 more·Jan 4, 2026

Stark shifts introduce additional phases that constrain the set of entangling gates that can be prepared via two-photon transitions in the strong Rydberg blockade limit. For non-independently addressed qubits, by controlling the absolute phases and t...

Zijin Liang, Qiying Pan, Hong-Mei Zou +1 more·Jan 4, 2026

Based on Ref.\cite{Riccardi A}, we investigate the entropy and variance squeezing of a V-type atom in a dissipative cavity, and discuss the influences of parameters including the spontaneously generated interference (SGI) ($θ$), the cavity-environmen...

Yajie Hao, Qiming Ding, Xiao Yuan +1 more·Jan 4, 2026

Constrained combinatorial optimization with strict linear constraints underpins applications in drug discovery, power grids, logistics, and finance, yet remains computationally demanding for classical algorithms, especially at large scales. The Quant...

Songyi Liu, Yongjun Wang, Baoshan Wang +2 more·Jan 4, 2026

Hardy-type paradoxes offer elegant, inequality-free proof of quantum contextuality. In this work, we introduce a unified logical formulation for general Hardy-type paradoxes, which we term logical Hardy-type paradoxes. We prove that for any finite sc...

Wei Liu, Wenjie Dou·Jan 4, 2026

The variational optimization of high-dimensional neural network models, such as those used in neural quantum states (NQS), presents a significant challenge in machine intelligence. Conventional first-order stochastic methods (e.g., Adam) are plagued ...

Hang Xu, Xiaoyang Deng, Ze Zheng +2 more·Jan 4, 2026

Quantum resources can, in principle, enable Heisenberg-limited (HL) sensing, yet no-go theorems imply that HL scaling is generically unattainable in realistic noisy devices. While quantum error correction (QEC) can suppress noise, its use in quantum ...

Guosen Liu, Pei Pei·Jan 4, 2026

We propose an efficient two-stage protocol for generating distant entanglement in a magnon-mediated hybrid quantum system, where magnons serve dual roles as both interaction mediators and qubits. This integrated design reduces the physical component ...

Tao Jiang, Li-Chen Zhao·Jan 4, 2026

We study soliton Thouless pumping in an extended diagonal Aubry-André-Harper model with on-site nonlinearities and inter-site nonlinearities. We show that the inter-site nonlinearities can make solitons acquire anomalous transport distances far beyon...

Shahrooz Pouryousef, Eneet Kaur, Hassan Shapourian +3 more·Jan 4, 2026

Scalable distributed quantum computing (DQC) has motivated the design of multiple quantum data-center (QDC) architectures that overcome the limitations of single quantum processors through modular interconnection. While these architectures adopt fund...

Nhat A. Nghiem, Tuan K. Do, Trung V. Phan·Jan 4, 2026

We introduce a quantum linear system solving algorithm based on the Kaczmarz method, a widely used workhorse for large linear systems and least-squares problems that updates the solution by enforcing one equation at a time. Its simplicity and low mem...

Chun-Yue Zhang, Shi-Xin Zhang, Zi-Xiang Li·Jan 4, 2026

Characterizing the intricate structure of entanglement in quantum many-body systems remains a central challenge, as standard measures often obscure underlying geometric details. In this Letter, we introduce a powerful framework, termed multi-bipartit...

Aleksey Lunkin, Nicole S. Ticea, Shashwat Kumar +292 more·Jan 4, 2026

Disorder in quantum many-body systems can drive transitions between ergodic and non-ergodic phases, yet the nature--and even the existence--of these transitions remains intensely debated. Using a two-dimensional array of superconducting qubits, we st...

Ayoub Ghaba, Radouan Hab Arrih, Elhoussine Atmani +1 more·Jan 4, 2026

Quantum steering is one of the most intriguing phenomena in quantum mechanics and is essential for understanding correlations in multi-body systems. Despite its importance, analytical results for coupled three-body oscillators remain scarce. In this ...

Ayoub Ghaba, Radouan Hab Arrih, Elhoussine Atmani +2 more·Jan 3, 2026

Quantum entanglement serves as a key phenomenon in understanding correlations in many-body systems, but analytical results remain scarce for coupled three-body oscillators. In this work, we address this gap by introducing a geometrical diagonalizatio...

Tiago F. F. Santos, Camille Latune·Jan 3, 2026

Traditional quantum thermodynamic frameworks associate work to energy exchanges induced by unitary transformations generated by external controls, and heat to energy exchanges induced by bath interaction. Recently, a framework was introduced aiming a...

Airat Kiiamov, Dmitrii Tayurskii·Jan 3, 2026

We report on a high-fidelity digital quantum simulation of Wigner localisation in a quasi-one-dimensional (quasi-1D) electron system using a 6-qubit segment of the state-of-the-art \textbf{IBM\,Heron\,2} quantum processor. By mapping the Coulomb inte...