Can thermal quantum Gibbs states approve as quantum equilibrium states?In this study, we investigate a quantum harmonic oscillator interacting with a thermal bath of oscillatory fields in a quantum circuit. By solving the Lindblad master equation, we calculate the…Ali Soltanmanesh·Jul 28, 2026SaveLearn
Phase-Flag Access and No-Go Constraints on Quotient-Space Real Quantum MechanicsBarrios Hita et al. [Phys. Rev. Lett. 136, 240202 (2026)] proposed a quotient-space formulation of quantum mechanics over the real numbers and concluded that complex numbers are only a convenience. A…Jeongho Bang, Kyoungho Cho, Kyunghyun Baek·Jul 27, 2026SaveLearn
Fast Unitary Preparation of Surface-Code Logical States on Neutral-Atom HardwarePreparing logical states is a constantly recurring primitive at the start of any surface-code-based quantum computation. The standard measurement-based protocol is expensive on neutral atoms, since…Ludwig Schmid, Robert Wille·Jul 27, 2026SaveLearn
QECirc: A Community-Driven, FAIR Library of Quantum Error Correction CircuitsQuantum error correction (QEC) underpins fault-tolerant quantum computing, but the circuits that realize QEC codes (encoders, logical state-preparation and gate routines, and syndrome-extraction…Ludwig Schmid, Tom Peham, Robert Wille·Jul 27, 2026SaveLearn
Symmetry-initialized quantum Gibbs sampling: a non-Abelian asymmetry cascadeFor a quantum Gibbs sampler whose mixing bottleneck is a weakly broken symmetry, I show that the correct initialization is determined by representation theory. I first prove a general…Soo-Jong Rey·Jul 27, 2026SaveLearn
Malleability of transformations on the ciphertext in noisy Quantum public key encryptionWe characterize a noisy variant of a Quantum public encryption protocol recently introduced by Malavolta and Walter which demonstrated that the notion of everlasting security can be rigorously…Pete Rigas·Jul 27, 2026SaveLearn
Agentic AI for Scientific Reasoning in Autonomous Quantum Sensing ExperimentsWe implement an agentic AI workflow built around a large language model (LLM) agent for autonomous experiments with nitrogen-vacancy (NV) centers in diamond. NV centers are a widely used platform for…Takuya Isogawa, Ryotaro Okabe, Nutdech Phadetsuwannukun et al.·Jul 27, 2026SaveLearn
Exceptional-point braiding with native controlsExceptional points define branch-exchange state transfers through holomorphic continuation of non-Hermitian eigenmodes, but realizing these transfers dynamically remains difficult. Slow encircling…Vishnu Chavva, Nero Osmancevic, Hugo Ribeiro·Jul 27, 2026SaveLearn
Covariant Quantum Measurements and Stochastic Dynamics on Representation SpaceWe develop a framework for group-covariant quantum measurements in which measurement-induced transitions between irreducible representation sectors are described by a stochastic process on…Naeem Shahid·Jul 27, 2026SaveLearn
A broadband, individually addressing two- and three-dimensional photonic integrated circuit for trapped-ion qubit controlTrapped ions provide a high-fidelity platform for quantum information processing, yet delivery of multiple, distinct wavelengths across large networks of interaction zones remains a bottleneck.…Daniel Klawson, Yiyang Zhi, Bingran You et al.·Jul 27, 2026SaveLearn
Invariant-based master equation applied to driven qutrit coupled to a bath and a leaky cavityWe employ a generalized approach to the master equation for driven open N-level (N>2) quantum systems using Lewis-Riesenfeld invariants, which avoids the driving-strength restrictions inherent to…Sagarika Basak, A. Javadi, D. Blume·Jul 27, 2026SaveLearn
A Model Predictive Control-Inspired Quantum AlgorithmWe introduce a new hybrid quantum-classical algorithm inspired by an advanced control strategy known as model predictive control (MPC). This algorithm unifies the optimization-based design of…Dominic Messina, Alicia B. Magann, Mohan Sarovar et al.·Jul 27, 2026SaveLearn
Maximal complementarity in the n-qubit Pauli groupObservables in quantum mechanics are generally complementary, that is, they reveal mutually incompatible pieces of information about a given system. This property is not only a fundamental tenet of…Markus Frembs, Giovanni Natale, Christopher S. P. Wever et al.·Jul 27, 2026SaveLearn
An algebraically closed family of informational n-qubit purity invariantsWe present a family of quadratics in Pauli expectation values, and prove that they constitute state-independent invariants for all n-qubit pure states. This family generalises the two-qubit `pentagon…Markus Frembs, Giovanni Natale, Christopher S. P. Wever et al.·Jul 27, 2026SaveLearn
Quantum reference frames beyond subsystems: a reconstruction and generalization of the perspective-neutral frameworkWe generalize the notion of quantum reference frames (QRFs) to cases where the frame does not necessarily correspond to a tensor factor subsystem, but to a covariant quantum instrument. This unlocks…Stefan L. Ludescher, Manuel Mekonnen, Thomas D. Galley et al.·Jul 27, 2026SaveLearn
A Kernel-Based Density of States Estimator for Quantum ComputingThe density of states (DoS) encodes the thermodynamic and spectral properties of quantum many-body systems, yet its reconstruction becomes intractable for Hilbert spaces too large to diagonalize.…Julio Cesar Siqueira Rocha·Jul 27, 2026SaveLearn
Universal Optimization and Tighter Fidelity Bounds for Approximate Quantum Error CorrectionApproximate quantum error correction (AQEC) extends the framework of discrete- and continuous-variable quantum error correction beyond the Knill-Laflamme (KL) conditions, where the recovery…Jing Wu, Michele Grossi, Doga Kurkcuoglu et al.·Jul 27, 2026SaveLearn
Non-Hermitian entropy production from fluctuation theoremsWe develop a first-principles thermodynamic framework for non-Hermitian dynamics based on a post-selected version of the fluctuation theorem. This allows us to identify a quantity that remains…Vasco Cavina, Frank Ernesto Quintela Rodríguez, Donato Farina·Jul 27, 2026SaveLearn
Realizing Error Suppression in Partially Fault-Tolerant Quantum Simulations with IBM Quantum ComputersQuantum error-detecting codes offer a near-term path for improving the performance of quantum simulations on noisy hardware. Using IBM's superconducting quantum computer ibmboston, we show that…Henry Froland, Dorota M. Grabowska, Sebastian Grieninger et al.·Jul 27, 2026SaveLearn
Numerical Modeling of Quasiparticle-Induced Dissipation in Fluxonium QubitsNonequilibrium quasiparticles (QPs) generated by stray infrared and ionizing radiation can limit the performance of superconducting quantum processors and present challenges for quantum error…Kate Azar, Max Hays, Kyle Serniak·Jul 27, 2026SaveLearn
Resolving Structure in Prethermal Floquet Dynamics with Precision Quantum ComputationPeriodically driven interacting quantum many-body systems can exhibit long-lived prethermal dynamics, where local observables retain coherent structure even as entanglement and operator complexity…Eyal Leviatan, Tasneem Watad, Roy Perry et al.·Jul 27, 2026SaveLearn
Efficient computation of real-time correlators using Pauli PropagationPauli propagation has shown promise for classically simulating quantum dynamics by evolving observables directly in the Heisenberg picture. In this work, we investigate its use for computing…Alexander F. Kemper, Raghav G. Jha, Arnab Bachhar et al.·Jul 27, 2026SaveLearn
Quantum simulacraHere we analyze the creation of quantum simulacra: phenomena that emerge from treating a Hermitian or non-Hermitian quantum system in metrics other than the standard L2. Changing the metric…L. F. Alves da Silva, M. H. Y. Moussa·Jul 27, 2026SaveLearn
Classical simulation and model concentration in passive linear opticsPassive linear optics is a restricted model of quantum computation, with complexity-theoretic evidence of quantum advantage for sampling tasks and low losses that make it attractive for near-term…Léo Monbroussou, Hugo Thomas, Hela Mhiri et al.·Jul 27, 2026SaveLearn
Pulse engineering via projection of response functions at infinite nonlinear orderOptimal control problems arise in a wide range of scientific disciplines, but the corresponding optimization algorithms often display a strong dependence on hyperparameters that significantly…Lia Kley, Ludwig Mathey·Jul 27, 2026SaveLearn