Papers

Hari Kumar Yadalam, Mark T. Mitchison·Mar 30, 2026

We introduce a numerical tensor-network method to compute the statistics of the charge transferred across an interface partitioning an interacting one-dimensional many-body lattice system with $U(1)$ symmetry. Our approach is based on a matrix-produc...

Lubashan Pathirana·Mar 30, 2026

We prove annealed central limit theorems for finite pattern counts in the measurement record of discrete-time quantum trajectories generated by repeated measurements in a disordered environment. Under summable mixing assumptions on the environment an...

Durgesh Pandey, Ankit Kumar Das, P. Arumugam·Mar 30, 2026

Non-Hermitian operators naturally arise in the description of open quantum systems, which exhibit features such as resonances and decay processes, where the associated eigenvalues are complex. Standard quantum algorithms, including the Variational Qu...

Giorgio Minati, Simone Roncallo, Simone Scrofana +6 more·Mar 30, 2026

The rapid growth of machine learning is increasingly constrained by the energy and bandwidth limits of classical hardware. Optical and quantum technologies offer an alternative route, enabling high-dimensional, parallel information processing directl...

Nilachal Chakrabarti, Nisa Ara, Neha Nirbhan +2 more·Mar 30, 2026

The $1+1$ dimensional $\mathbb Z_2$ gauge theory is the simplest model that allows for quantum simulation to probe the fundamental aspects of a gauge theory coupled with dynamical fermions. To reliably benchmark such a system, it is crucial to unders...

Daniele Iannotti, Angelo Russotto, Barbara Jasser +2 more·Mar 30, 2026

We present exact, closed-form results for the non-stabilizerness of random pure states subject to a U(1) symmetry constraint. Using stabilizer entropy as our non-stabilizerness monotone, we derive the average and the variance for U(1)-constrained Haa...

Lawrence Lee, John Lawless, Caroline Riggall·Mar 30, 2026

We demonstrate that a future precision $ee$ Higgs factory would be able to perform a spacetime-resolved test of quantum nonlocality in Higgs boson decays. In simulated $ee\rightarrow ZH \rightarrow (μμ)(ττ)$ events at $\sqrt{s}=240$ GeV, we reconstru...

Veronika Baumann, Alberto Rolandi·Mar 30, 2026

In this paper we propose a totally serious algorithm to solve NP problems in polynomial time provided one is willing to wager the fate of all observers in the universe on the many-world interpretation of quantum theory being correct.

Gilad Kishony, Austin Fowler·Mar 30, 2026

Syndrome extraction in the planar color code is complicated by high weight stabilizers and hook errors that can reduce the circuit-level distance. With a single auxiliary qubit per plaquette, any spatially uniform circuit halves the circuit-level dis...

Christopher Ekman, Emil J. Bergholtz, Paolo Molignini·Mar 30, 2026

In one dimension, strongly correlated gapless systems are highly constrained due to conformal invariance, leading to the decoupling of low energy degrees of freedom corresponding to different symmetry sectors. The most familiar example of this is spi...

Ryan Babbush, Adam Zalcman, Craig Gidney +6 more·Mar 30, 2026

This whitepaper seeks to elucidate implications that the capabilities of developing quantum architectures have on blockchain vulnerabilities and mitigation strategies. First, we provide new resource estimates for breaking the 256-bit Elliptic Curve D...

Wojciech J. Jankowski, Giandomenico Palumbo, Robert-Jan Slager·Mar 30, 2026

We report on a universal topological dichroism of chiral three-dimensional systems in response to the chirality of light. We show that chiral topological invariants result in integer-quantized dichroic excitation rate differences. Moreover, we demons...

Xiangyu Chen, Qiang Lei·Mar 30, 2026

Quantum coherence, as a direct manifestation of the quantum superposition principle, is a crucial resource in quantum information processing. Block coherence resource theory generalizes the traditional coherence framework by defining coherence via a ...

Ian Hedgepeth, Youqiu Zhan, Vitaly Fedoseev +1 more·Mar 30, 2026

Quantum optomechanical STIRAP (Stimulated Raman Adiabatic Passage) is investigated for a system of two mechanical modes coupled to an optical mode. We show analytically that in a system without loss, fractional STIRAP can generate a mechanical Bell s...

Ahmed Shokry, Movahhed Sadeghi, Mahmut Kandemir·Mar 30, 2026

Quantum metric learning enhances machine learning by mapping classical data to a quantum Hilbert space with maximal separation between classes. However, on current NISQ hardware, this mapping process itself is prone to errors and could be fundamental...

Ryoji Miyazaki·Mar 30, 2026

The Sourlas-Lechner-Hauke-Zoller (SLHZ) scheme for quantum annealing uses the parity to encode logical variables and has several advantages, but it has not been implemented for large-scale quantum annealers. If the SLHZ-based approach can be implemen...

Tristan Benoist, Sascha Lill, Cornelia Vogel·Mar 30, 2026

Quantum trajectories are Markov chains modeling quantum systems subjected to repeated indirect measurements. Their stationary regime depends on what observables are measured on the probes used to indirectly measure the system. In this article we expl...

Örs Legeza, Andor Menczer, Miklós Antal Werner +7 more·Mar 30, 2026

In light of major developments over the past decades in both quantum computing and simulations on classical hardware, it is a serious challenge to identify a real-world problem where quantum advantage is expected to appear. In quantum chemistry, elec...

James W. T. Keeble, Alessandro Lovato, Caroline E. P. Robin·Mar 30, 2026

As neural networks are known to efficiently represent classes of tensor-network states as well as volume-law-entangled states, identifying which properties determine the representational capabilities of neural quantum states (NQS) remains an open que...

Madelyn Cain, Qian Xu, Robbie King +6 more·Mar 30, 2026

Quantum computers have the potential to perform computational tasks beyond the reach of classical machines. A prominent example is Shor's algorithm for integer factorization and discrete logarithms, which is of both fundamental importance and practic...