Superconducting Flux Memory for Cryogenic ApplicationsWe report the development of flux memory for use with superconducting circuits. This technology stores persistent currents in superconducting loops on-chip to be used to provide flux biasing for…Gregory R. Boyd, Jeremy Clark, Mark Covington et al.·Sep 1, 2026SaveLearn
The Fermionic Cohomology Problem on the Full Fock Space Is QMA1-CompleteFermionic cohomology detects zero-energy states of supersymmetric Hamiltonians. Previous work showed that deciding nonzero cohomology in an input-specified particle-number sector is…Yibin Wang·Sep 1, 2026SaveLearn
Parametric amplification of continuous-variable entangled state for loss-tolerant quantum distributed sensingQuantum metrology exploits quantum states to achieve an estimation sensitivity beyond classical limits. In the continuous-variable (CV) regime, the squeezed state has been used to implement…Sijin Li, Wei Wang·Sep 1, 2026SaveLearn
Terrestrial Gravitational Wave Detection with Atom InterferometersAtom interferometers (AIFs) are highly precise inertial sensors and are considered promising instruments for the detection of gravitational waves (GWs) and certain dark matter (DM) candidates in the…Michael Werner, Ashkan Alibabaei, Naceur Gaaloul·Aug 31, 2026SaveLearn
Fractal dimension predicts quantum kernel collapse in angle-encoded dataAngle-encoded quantum kernels on tabular data collapse when the feature map is wider than the intrinsic dimension of the data. We propose the correlation fractal dimension D2 as an a priori qubit…Ana Paula Appel·Aug 31, 2026SaveLearn
Towards unsupervised representation learning for quantum data: quantum models with inference and generationWith quantum sensors, simulators and networks emerging, a future of quantum technology may produce quantum states as data---that is, coherently rather than as classical measurement records---thus…Robin Lorenz, Eric Brunner, Marcello Benedetti·Aug 31, 2026SaveLearn
Spatial correlations of photons interacting via transverse Rydberg blockadeWe develop a theory of the transverse spatial dynamics of two interacting photons in a Rydberg nonlinear medium. Extending the well-studied one-dimensional case, we explore both longitudinal and…Bankim Chandra Das, Daniil Svirskiy, Matthias Metternich et al.·Aug 31, 2026SaveLearn
Generation of multicomponent Schrödinger cat states in schemes with measurement of Gaussian statesIn this work, we propose a scheme for generating superpositions of Fock states whose numbers differ by four or eight. The proposed protocol is based on photon-number-resolving measurements on…E. A. Nesterova, S. B. Korolev·Aug 31, 2026SaveLearn
Which Otto Engine Is the Fastest?A general thermal machine is characterized by distinct time or energy scales: temperature, coupling to the heat baths, internal free dynamics and interactions, and external driving. We address the…Idriss Hank Nkouatchoua Ngueya, Marcin Łobejko·Aug 31, 2026SaveLearn
Optimization Landscape Geometry in VQE for Frustrated Quantum Spin ModelsWe benchmark eight classical optimizers for exact-statevector VQE calculations on a controlled hierarchy of frustrated spin models, ranging from a diagonal Ising glass to transverse-field Ising and…Vojtěch Novák, Ivan Zelinka, Swagatam Das et al.·Aug 31, 2026SaveLearn
Codes for Quantum Secret Sharing with a HelperHelper quantum secret sharing is a form of secret sharing defined by its unique access structure. One special fixed party, called the helper, can work together with any other party to fully decode…Eric Chitambar, Sarah Hagen, David W. Kribs et al.·Aug 31, 2026SaveLearn
Quantum Secret Sharing with a Helper and Programmable Access StructuresQuantum secret sharing (QSS) is a process in which the state of a quantum system is partitioned into multiple shares, allowing only specific subsets of shareholders to reconstruct the state, while…Eric Chitambar, Sarah Hagen, David W. Kribs et al.·Aug 31, 2026SaveLearn
Exact learning of quantum noise with tensor networksAccurate noise models are essential for high-performance quantum error correction, yet characterizing the noise of a quantum device typically requires dedicated experiments. We present a variational…Nicola Pancotti, Vedika Saravanan, Krysta Svore·Aug 31, 2026SaveLearn
Entangling capability of coherently controlled quantum processesWe analytically characterize entanglement generation by two paradigmatic coherently controlled quantum processes, the quantum switch and time-flip. Retaining rather than measuring or discarding the…Beyza Aslanbaş, Bedirhan Alkan, Göktuğ Karpat·Aug 31, 2026SaveLearn
Encoding Compact U(1) Gauge Fields in Bosonic Modes with GKP StabilizationCompact lattice gauge theories are formulated in terms of angular variables and integer electric fluxes, while bosonic quantum hardware provides oscillator modes with continuous, unbounded…Victor Ale, Tommaso Rainaldi, Enrique Rico et al.·Aug 31, 2026SaveLearn
Efficient search for excitable zero-modes in constrained systemsKinetically constrained systems, such as those representing Rydberg atom arrays in the blockade regime, have gathered considerable attention due to the presence of atypical eigenstates in their…Jean-Yves Desaules·Aug 31, 2026SaveLearn
Bosonic codes from compact phase spacesWe present the algebraic structure of bosonic quantum error-correcting codes on genus-two Riemann surfaces. We explicitly construct the code words as automorphic forms and analytically generate the…David Roberts, Aaron Slipper, Alireza Parhizkar et al.·Aug 31, 2026SaveLearn
Engineering multi-photon dissipation with a dc-voltage-biased Josephson junctionMulti-photon dissipation -- a key resource for bosonic qubits -- is usually realized by parametrically pumping a Josephson coupler at the cost of spurious nonlinear terms. Here we instead engineer it…Marco Paradina, Ambroise Peugeot, Roberto Negrin et al.·Aug 31, 2026SaveLearn
"Train classical, deploy quantum" requires rethinking generalizationGenerative models have become central across science and industry, from image and text synthesis to the design of molecules and materials. Quantum generative models are considered one of the most…Snehal Raj, Natansh Mathur, Alejandro Perdomo-Ortiz·Aug 31, 2026SaveLearn
Unconditional Certified Randomness without StructureWe obtain a certified randomness protocol in the quantum random oracle model. The protocol is non-interactive and publicly verifiable with a classical verifier, and is based on Yamakawa and…Andrea Coladangelo, Dakshita Khurana, Saachi Mutreja et al.·Aug 31, 2026SaveLearn
Tunable Exceptional Points for Quantum Sensing in a Spin--Orbit-Angular-Momentum Coupled BECExceptional points (EPs) can induce strongly amplified responses to weak perturbations, but enhanced spectral sensitivity in conventional non-Hermitian systems does not necessarily translate into…Zicheng Zhang, Xi-Wang Luo·Aug 31, 2026SaveLearn
Phase-noise induced many-body interference suppression in Gaussian Boson SamplingWe develop a Heisenberg-picture tensor-network formulation of collision-free Gaussian Boson Sampling, providing a direct Fock-space expression for output probabilities in terms of experimentally…Dario Cilluffo, Matthias Kost, Martin B. Plenio·Aug 31, 2026SaveLearn
Deterministic Minimum-Output-Entropy Nonadditivity via Haagerup's Inequality and Near-Free Permutation RepresentationsWe give a deterministic realization of the finite-dimensional quadratic certificate underlying Collins's mixed-unitary proof of minimum-output-entropy nonadditivity. For every fixed integer $K…Guocheng Zhen, Chengkai Zhu, Ranyiliu Chen et al.·Aug 31, 2026SaveLearn
Entanglement and magic transitions in an all-to-all non-Hermitian spin modelThe long-time state of a non-Hermitian system is determined by the eigenvalue with the largest imaginary part. In interacting many-body systems this eigenvalue usually cannot be tracked analytically,…Sasanka Dowarah, Michael Kolodrubetz·Aug 31, 2026SaveLearn
Protected Logical Qudits in Kitaev Quantum Double Models via Stable RepresentationsFault-tolerant quantum computation requires robust protection of encoded quantum information. In this work, we develop a representation-theoretic framework for constructing protected logical qudits…Naihong Hu, Futao Wang·Aug 31, 2026SaveLearn