Papers

Ke-Han Zhao, Koichi Yamagata, Jun Suzuki·Jul 8, 2026

We study lower bounds for Bayesian quantum parameter estimation, with a particular focus on qubit models. While several lower bounds on the Bayes risk have been proposed, including the Bayesian symmetric logarithmic derivative (B-SLD) type bound and ...

Satoshi Tanaka, Gonzalo Ordonez, Masatoshi Kubota +2 more·Jul 8, 2026

We formulate the geometric structure of non-compact bosonic quantum systems in regimes where vacuum instability renders the relevant quantum states non-normalizable, causing conventional state-space quantum geometry -- described by the Berry connecti...

Yuqi Zhang, Bo Fang, Yuxin Yang +6 more·Jul 8, 2026

Predicting the structure of short peptides in protein binding pockets remains difficult because this regime requires physics-based conformational search, yet existing methods do not provide a practical way to carry out that search on current hardware...

Wenjie Zhong, Yubao Liu, Yanbei Chen +2 more·Jul 8, 2026

Macroscopic optomechanical systems offer a promising testbed for distinguishing whether gravity acts as a quantum interaction or as a classical field. Schrodinger-Newton (SN) theory is the nonrelativistic limit of semi-classical gravity where quantum...

Martin Lukac, Khaled El-Fakih, Uraz Turker·Jul 8, 2026

We propose a quantum model for finding a resetting input sequence (RS) which can take a finite state transition system (FA), to particular state independent of its current state. The complexity of finding such sequences for various types of FA can be...

Wenxin Cheng, Chang Liu, Dekun Shen +12 more·Jul 8, 2026

Direct, real-space imaging of spin-wave propagation and wavefronts in magnetic materials is crucial for advancing both fundamental understanding of spin dynamics and the development of functional devices. This, however, remains a significant challeng...

Antony Valentini, Mira Varma·Jul 8, 2026

We obtain an experimental constraint on possible Born-rule violations at high-energy colliders. We model Born-rule violations with differential scattering cross sections $dσ/dΩ$ subject to an angular smearing by a narrow Gaussian of width $\varepsilo...

Yi-An Wang, Kun Ding, Linhu Li·Jul 8, 2026

We show that anyonic exchange statistics can activate non-Hermitian point-gap topology in models that are topologically trivial in its absence. The emergent topology oscillates more rapidly with the statistical phase as the anyon number increases, an...

Zhicai Chen, Jun Xu, Deyi Kong +2 more·Jul 8, 2026

We propose a component-selective scheme for improving two-photon sources in a cavity-coupled two-atom system, where a single cavity mode interacts with two two-level atoms driven by phase-controlled classical fields of the same frequency. By controll...

N. Vera, F. M. Quinteros, P. Barberis-Blostein +1 more·Jul 8, 2026

We study the atom-atom correlation length in an atomic array coupled to a waveguide under the Bragg condition with delayed non-Markovian interactions caused by a finite photon propagation time. Starting from a single excited atom, the excitation part...

Richard Cleve, Eric Culf, Aviv Taller·Jul 8, 2026

It is well known that the quantum value of an XOR nonlocal game, where the winning condition depends only on the XOR of the two players' output bits, may be approximated in polynomial time. We study a variant of the XOR game model, which we call tilt...

Ning Bao, Keiichiro Furuya, Jacob March·Jul 8, 2026

We study the error-correcting properties of pure-state holographic geometries, in which mixed boundary subregions are replaced, via the surface/state correspondence, by the Ryu--Takayanagi (RT) geodesic bounding their entanglement wedges. In AdS$_3$/...

Bence Csakany, Alex J. W. Thom·Jul 7, 2026

Chiral molecular structure can couple to electron spin, leading to unexpected spin polarization effects. This Chirality-Induced Spin Selectivity (CISS) was first reported for DNA molecules adsorbed on gold but its microscopic origin remains unclear. ...

Diego Barberena, Nigel Cooper·Jul 7, 2026

The localization transition of the sub-Ohmic spin-boson model generates boson bath correlations that are, at low frequencies, analytically inaccessible to standard coherent-state-polaron variational ansatzes. In this paper, we introduce a ``squeezed ...

Yilun Yang, J. Ignacio Cirac, Mari Carmen Bañuls·Jul 7, 2026

Quantum many-body states with sufficiently low energy variance can serve as approximations to thermal states, and they may be prepared by energy filtering simple pure states. In this work, we examine how narrow the filter width must be to guarantee t...

Nikolaos Giovanoudis, Navid Kazemiseresht, Fabio Mezzacapo +2 more·Jul 7, 2026

The production of large-scale entangled states is one of the main goals of next-generation quantum technologies, with an immediate potential for applications in the context of entanglement-assisted quantum sensing. A very promising platform to achiev...

Bashir Mojaveri, Rasoul Jafarzadeh Bahrbeig, Mohammad Ali Fasihi +1 more·Jul 7, 2026

Currently, remote energy transfer and immunity to dissipation are hot topics in quantum batteries (QBs). In this work, we propose a protocol to realize energy transfer between two remote atoms (a quantum charger and a quantum battery) each coupled to...

Micael Dias, Caroline Alves, Gabrielly Roman +1 more·Jul 7, 2026

Continuous variable quantum key distribution protocols (CV-QKD) with discrete modulation have been intensively investigated to bridge the gap between ideal Gaussian modulation and modern coherent optical communication systems. To mitigate the penalty...

Bayram Yuksel Eker, Suayb S. Arslan, Ozgur Nazli +2 more·Jul 7, 2026

Autonomous systems under partial observability act on beliefs, not raw sensor events. QANTIS treats the quantum processor as a calibrated belief-update service in that loop: it receives a prior and an observation model, estimates the rare-event evide...

Theo Saporiti·Jul 7, 2026

Near-term physical implementations of quantum algorithms require efficient quantum error mitigation schemes to reduce quantum noise. In this letter we propose a new mitigation technique, by extending the applicability of our BBGKY-ISM scheme from qua...