Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Observation of a power transfer controlled by the phase of a quantum superposition
Nathanaël Cottet, Sébastien Jezouin, Bogdan Reznychenko +2 more·Jul 20, 2026
A driven qubit exchanges energy with the propagating modes that drive it. When two spatially separated modes drive a single qubit with opposite amplitudes, their net action on the qubit cancels. Yet the qubit can still transfer power from one mode to...
Cavity-Mediated Charging of a Graphene Excitonic Quantum Battery
Maryam Hadipour, Soroush Haseli·Jul 20, 2026
We study the charging and work-extraction properties of a graphene-based excitonic quantum battery embedded in a driven-dissipative optical microcavity. The system consists of a pair of intervalley excitons in strained graphene, where one exciton act...
Equivariant Continuous Normalizing Flows with Offline Sampling for Fermionic Ground State Estimation
Sam Cochran, James B. Larsen, Andrew Wray +3 more·Jul 20, 2026
We introduce a framework for fermionic variational Monte Carlo (VMC) in which a continuous normalizing flow (CNF) refines a fixed antisymmetric base wavefunction. The flow is implemented as a permutation-equivariant neural ODE, a smooth, topology-pre...
Governing Well in the Algorithmic Age: The Foundations of Digital Statecraft
Zeynep Engin, Tim Gordon, Viviana Bastidas +13 more·Jul 20, 2026
The digital substrate of states -- data, algorithms, infrastructure, platforms, applications -- is being governed without adequate conceptual foundations. The ability and legitimacy required to govern this substrate, and to govern with it, are simult...
Quantum-Enabled Spintronic "Small" Antennas
Supriyo Bandyopadhyay·Jul 20, 2026
Antennas transmit information wirelessly from one location to another via electromagnetic waves. Miniaturizing them, however, is challenging since the radiation efficiencies of all traditional antennas, based on the principles of classical electromag...
Deep inelastic scattering as a probe of entanglement: the complete QCD dipole cascade
Martin Hentschinski, Krzysztof Kutak, Wieslaw Placzek +1 more·Jul 20, 2026
We study entanglement entropy in Deep Inelastic Scattering (DIS) using the dipole formulation of the high-energy limit of QCD. We argue that a reduced density matrix arises in low $x$ DIS due to a trace over unobserved color degrees of freedom and we...
Bright Telecom Spin-Photon Interface in Silicon Photonics
Carolina Crosta, Amirehsan Alizadehherfati, Purbita Purkayastha +5 more·Jul 20, 2026
Silicon is an attractive host for scalable quantum photonics, but the absence of bright telecom-band emitters with optically addressable spin states has limited its use for spin-photon interfaces. Here we demonstrate the Al1-center, an aluminum--carb...
Aromatic molecular emitters in a hexagonal boron nitride stack
Tianyu Fang, Ricardo Gioia Alvarez, Babak Behjati +8 more·Jul 20, 2026
Single polycyclic aromatic hydrocarbon molecules embedded in organic matrices have proven to be an excellent family of narrow-linewidth quantum emitters. Extending this host-guest setting to van der Waals materials offers the opportunity to combine t...
Reducing entanglement with a Hamiltonian derived Clifford transformation
James Brown, Erika Lloyd, Alexandre Fleury +2 more·Jul 20, 2026
Recently (Physica Scripta, 100(10):105401, 2025), an algorithm was introduced that deterministically generates a Clifford transformation from the Qubit Coupled Cluster (QCC) algorithm which we call Q-Cliff (QCC+Clifford). There, it was shown that Q-C...
Monolithic printed-circuit board RF-trap for electrons
Zijue Luo, Jae Eu, Tianyi Wang +1 more·Jul 20, 2026
Qubits encoded in the spin of trapped electrons have been proposed as a promising novel platform for quantum information processing. While trapping of electrons has been largely carried out in Penning traps for precision measurement purposes, it is d...
Magic-protected entanglement and Clifford-irreducible structure in magic state space
Alejandro Borda Kuhlmann, Julian Rincon·Jul 20, 2026
We develop a Clifford-orbit framework for studying magic-protected entanglement, which we refer to as magical entanglement: the part of bipartite entanglement that remains after optimal stabilizer simplification. This construction leverages residual ...
Calculus of Robinet: completely positive reconstruction of time-averaged diffusive quantum trajectories
Hector Hutin, Antoine Tilloy·Jul 20, 2026
Truly continuous quantum trajectories, obtained from homodyne or heterodyne readouts, can only ever be reconstructed approximately. The continuous measurement signal, needed for exact reconstruction, is averaged over bins of finite time $Δt$ during a...
Remote entanglement need not be the bottleneck for modular trapped-ion quantum computing
Felix W. Knollmann, David P. Nadlinger, John Blue +7 more·Jul 20, 2026
Modularity underpins classical computing; as quantum processors encounter limits on fabrication yield, reliability, and size, they will need it just as acutely. The bottleneck to linking modules is producing shared entanglement at sufficient rate, de...
Information Compression at Criticality
Simon Jiricek, Miroslav Hopjan, Boris Altshuler +2 more·Jul 20, 2026
Highly excited quantum states at the critical boundary of ergodicity are known to deviate from thermal behavior, yet their dynamical properties remain poorly understood. Here, we uncover the complexity of quantum dynamics at criticality through the l...
Adlam's Frame: comment on "Wigner's Frame"
Andrea Di Biagio, Anne-Catherine de la Hamette·Jul 20, 2026
Recent no-go theorems based on extended Wigner's Friend scenarios (EWFS) reveal a deep tension between the universal validity of quantum theory and local friendliness (LF), the conjunction of three natural assumptions: the absoluteness of observed ev...
Nishimori Threshold Estimation for Bayesian Inference and $\mathbb{Z}_q$ Surface Code Decoding
Rohit Mukherjee, Simon Trebst·Jul 20, 2026
In quantum error correction, the error threshold provides essential quantitative guidance for the ability to bring about fault-tolerance through decoding the effects of incoherent noise, weak measurement or inference. However, the numerical value of ...
Non-Abelian Gauge Field Mechanics
Ivan Velkovsky, Carlos Camacho, Tomoki Ozawa +2 more·Jul 20, 2026
Non-Abelian gauge fields play a key role in describing the behavior of particles whose motion is coupled to internal degrees of freedom, such as their spin. Here, we experimentally realize a tuneable non-Abelian gauge field in an active mechanical la...
QuantiSpect: A Structure-Aware Lightweight 3D CNN Pre-Decoder for Scalable Surface Code Quantum Error Correction
Pan Gao, Xu-Sheng Xu, Ji-Ze Han +6 more·Jul 20, 2026
Real-time decoding is a critical bottleneck for large-scale fault-tolerant quantum computing. AI-based neural pre-decoders locally correct most physical errors before passing residual syndromes to a global decoder, enabling sub-microsecond latencies....
Hardware Robustness of Sample-Based Quantum Diagonalization
Ahatesham Bhuiyan, Cheng Chu, Qian Lou +1 more·Jul 20, 2026
Sample-based Quantum Diagonalization (SQD) is a hybrid quantum-classical method that replaces variational optimization with a self-consistent recovery loop over QPU samples. Although SQD is considered robust to noisy samples and imperfect classical i...
Semi-fractality and localization on a chiral Cayley tree
Carlo Vanoni, Vladimir E. Kravtsov, Boris L. Altshuler·Jul 20, 2026
We study a quantum particle hopping on an infinite Cayley tree with nearest-neighbor hopping amplitudes drawn from a distribution singular as $|t|^{-a}$ near weak links and no on-site disorder. Because the graph is bipartite, the model has chiral sym...