Papers

Phillip Popp, Stephan Rosenkranz, Arthur P. Ramirez +1 more·Jun 10, 2026

Neutron scattering is central to identifying quantum states of magnetic materials. In the search for quantum spin liquids, broad spectral features of inelastic spectra have been cited as evidence for spinon excitations, but can also arise from magnon...

Joyce Kwan, Perrin Segura, Yanfei Li +7 more·Jun 10, 2026

Fractional quantum Hall states are a cornerstone of topological physics, hosting fractionally charged quasiparticles with exotic statistics that promise to enable topologically protected quantum information processing. Among these, the Pfaffian state...

Julien Froustey, Ermal Rrapaj, Yuhao Liu +3 more·Jun 10, 2026

Neutrino evolution in dense astrophysical environments is typically described either within a quantum kinetic framework, which neglects the build-up of multi-body correlations, or through simplified many-body calculations that allow significant entan...

Ryotaro Niwa, Satoshi Yoshida, Koki Ono +5 more·Jun 10, 2026

We consider the problem of purifying noisy qubit unitary channels. Given the ability to apply an unknown qubit unitary channel followed by depolarizing noise, we aim to construct a superchannel that purifies the noisy unitary back to the original unk...

Harry K. Stoltz·Jun 10, 2026

The stabilizer fragment of the ZX calculus is amongst the most important fragments of the theory. The closely related Clifford+T fragment is approximately universal (arXiv:1705.11151). Additionally, the stabilizer calculus can be described by a small...

Fatemeh Moradi Kalarde, Sadra Boreiri, Xiangling Xu +5 more·Jun 10, 2026

Bell's theorem shows that entangled quantum particles can exhibit correlations that classical particles cannot reproduce without an additional nonlocal resource, such as communication. In this sense, quantum particles are fundamentally more nonlocal ...

Otman Bouladiane, Hocine Bahlouli, Clarence Cortes +2 more·Jun 10, 2026

We theoretically investigate spin- and valley-resolved quantum transport in monolayer tungsten diselenide (WSe$_2$) described by an effective massive Dirac Hamiltonian. Particular attention is devoted to a finite barrier region characterized by simul...

Chirag Chawla, Pratinav Seth, Vinay Kumar Sankarapu·Jun 10, 2026

Domain fine-tuning degrades the safety of large language models: fine-tuned specialists readily comply with harmful prompts framed in domain language. Existing inference-time defenses that mix logits from a safe anchor model require both models to sh...

Luca Giovanni Cammarata, Tommaso Fazio, Roberto Passante +1 more·Jun 10, 2026

We consider a movable conducting plate of finite mass, between two fixed ones, whose mechanical degrees of freedom are treated quantum-mechanically and bound to its equilibrium position by a harmonic potential. The movable wall is thus subjected to q...

Max Bergerhoff, Pascal Baumgart, Christian Haen +5 more·Jun 10, 2026

A quantum repeater segment is a basic building block of a quantum repeater, generating buffered entanglement of quantum memories to connect quantum repeater cells. It also enables the connection between quantum computers. In the implementation we pre...

Lucas T. Braydwood, Taejin Park, Hirofumi Hashimoto +4 more·Jun 10, 2026

The standard in Earth-observation tasks today is having near real-time access to surface images in response to changing conditions. For instance, as urban environments interface more with wildlands and wildfires become less predictable, their trackin...

Sougata Bhattacharyya, Fatih Ozaydin, Sovik Roy·Jun 10, 2026

The asymmetric three-qubit W-class state $|\overline{W_3^L}\rangle$ defines an isosceles entanglement-network geometry, (a) two vertex-base (VB) links form stronger bipartite connections, (b) while the base-base (BB) link is weaker. This suggests tha...

Yuanqi Liu, Weilei Zeng, Peixiang Li +6 more·Jun 10, 2026

The Ising framework maps the decoding problem in quantum error correction onto ground-state optimization of a classical Hamiltonian, in which $X$-$Z$ error correlations enter as cross terms. Under phenomenological depolarizing noise, the exact joint ...

Dimitris Lionas, Charis Anastopoulos, Konstantinos Gourgouliatos·Jun 10, 2026

The origin of cosmic acceleration remains a central problem in cosmology, commonly attributed to a cosmological constant within the $Λ$CDM model or to dynamical dark energy. Here, we develop an alternative approach in which acceleration emerges from ...

Donghwa Lee, Kyujin Shin, Hyang-Tag Lim +2 more·Jun 10, 2026

Reference frame mismatch among communication parties introduces errors in quantum cryptographic protocols. As the number of participants increases, aligning reference frames becomes increasingly difficult, complicating multipartite quantum cryptograp...

Siang-Yun Liu, Bo-Ren Huang, Zhi-Xuan Zen +2 more·Jun 10, 2026

Characterization of time-frequency (TF) quantum states requires reliable reconstruction of their TF distributions. However, imperfect transmission or measurement channels can distort reconstructed joint spectral intensities (JSIs), especially when th...

Jeongho Bang, Kyoungho Cho, Jeongwoo Jae·Jun 10, 2026

A central principle in quantum machine learning is that an ansatz should be expressive enough to represent the quantum data of interest. Yet, the expressibility is statistically meaningful only insofar as it can be learned from finitely many copies o...

L. Huang, I. G. Rebollo, A. R. Champagne·Jun 10, 2026

Single-wall carbon nanotubes (SWCNTs) are narrow ribbons of graphene with atomically precise edges and a single quantum transport channel, at experimentally-relevant dopings. This makes them ideal systems to harness quantum transport straintronics (Q...

Lang Li, Yutian Wu, Giulio Chiribella +1 more·Jun 10, 2026

Randomness amplification, the task of extracting uniform private bits from biased seeds that may be partly known by a malicious third party, is of central importance in cryptography. The highest security in this task is provided by a class of quantum...

Michael Caouette-Mansour, Thomas J. Clark, Valeria Mosso Tsedilkina +1 more·Jun 10, 2026

Fiber optical cavities offer small mode volumes and correspondingly strong light-matter interactions in an open Fabry-Perot geometry. However, existing fabrication techniques do not reliably produce substrates with surface profiles amenable to high m...