Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Simultaneous Classical and Quantum Communications: Recent Progress and Three Challenges
Phuc V. Trinh, Shinya Sugiura, Carlo Ottaviani +2 more·Dec 11, 2025
A critical aspect of next-generation wireless networks is the integration of quantum communications to guard against quantum computing threats to classical networks. Despite successful experimental demonstrations, integrating quantum communications i...
Eight-Qubit Operation of a 300 mm SiMOS Foundry-Fabricated Device
Andreas Nickl, Nard Dumoulin Stuyck, Paul Steinacker +24 more·Dec 11, 2025
Silicon spin qubits are a promising candidate for quantum computing, thanks to their high coherence, high controllability and manufacturability. However, the most scalable complementary metal-oxide-semiconductor (CMOS) based implementations have so f...
Enhancing the Practical Reliability of Shor's Quantum Algorithm via Generalized Period Decomposition: Theory and Large-Scale Empirical Validation
Chih-Chen Liao, Chia-Hsin Liu, Yun-Cheng Tsai·Dec 11, 2025
This work presents a generalized period decomposition approach, significantly improving the practical reliability of Shor's quantum factoring algorithm. Although Shor's algorithm theoretically enables polynomial-time integer factorization, its real-w...
Upper Bounds on Fluctuation Growths of Observables in Open Quantum Systems
Newshaw Bahreyni, Paul M. Alsing, Carlo Cafaro +2 more·Dec 10, 2025
The upper bounds for the rate of fluctuation growth of an observable in both open and closed quantum systems have been studied actively recently. In our recent work we showed that the rate of fluctuation growth for an observable in a closed quantum s...
Engineer coherent oscillatory modes in Markovian open quantum systems
Chun Hei Leung, Pak-Tik Fong, Tianyi Yan +1 more·Dec 10, 2025
We develop a novel framework to engineer persistent oscillatory modes in Markovian open quantum systems governed by a time-independent Lindblad master equation. We show that oscillatory modes can be created when the Hamiltonian and jump operator can ...
Beyond Memristor: Neuromorphic Computing Using Meminductor
Frank Zhigang Wang·Dec 10, 2025
Memristor (resistor with memory), inductor with memory (meminductor) and capacitor with memory (memcapacitor) have different roles to play in novel computing architectures. We found that a coil with a magnetic core is an inductor with memory (memindu...
Programmable Quantum Photonic Interfaces for Quantum Networking
Siavash Mirzaei-Ghormish, Mahmoud Jalali Mehrabad, Helaman Flores +2 more·Dec 10, 2025
Quantum networks require interfaces translating memory photons to telecom wavelengths while controlling spatial modes; tasks performed by separate components today. We present a programmable alternative: a structured pump writes a virtual Bragg grati...
Approximate Counting in Local Lemma Regimes
Ryan L. Mann, Gabriel Waite·Dec 10, 2025
We establish efficient approximate counting algorithms for several natural problems in local lemma regimes. In particular, we consider the probability of intersection of events and the dimension of intersection of subspaces. Our approach is based on ...
Inflation is Not Magic
S. Shajidul Haque, Ghadir Jafari, Bret Underwood·Dec 10, 2025
Cosmological perturbations generated during inflation exhibit striking quantum features, including entanglement and high circuit complexity. Yet their observational signatures remain effectively indistinguishable from classical stochastic variables. ...
Gradient projection method and stochastic search for some optimal control models with spin chains. I
Oleg V. Morzhin·Dec 10, 2025
This article (I) considers the known optimal control model of a quantum information transfer along a spin chain with controlled external parabolic magnetic field, with an arbitrary length. The article adds certain lower and upper pointwise constraint...
Entanglement in the Schwinger effect
Dimitrios Kranas, Amaury Marchon, Silvia Pla·Dec 10, 2025
We analyze entanglement generated by the Schwinger effect using a mode-by-mode formalism for scalar and spinor QED in constant backgrounds. Starting from thermal initial states, we derive compact, closed-form results for bipartite entanglement betwee...
Quantumness via Discrete Structures
Ravi Kunjwal·Dec 10, 2025
Quantum theory departs from classical probabilistic theories in foundational ways. These departures--termed quantumness here--power quantum information and computation. This thesis charts the role of discrete structures in assessing quantumness, synt...
Broadband Spatio-Spectral Mode Conversion via Four-Wave Mixing
Helaman Flores, Mahmoud Jalali Mehrabad, Siavash Mirzaei-Ghormish +2 more·Dec 10, 2025
We introduce a framework for scalable and broadband free-space phase-matched four-wave mixing in ring resonators. This method for four-wave mixing reduces the complexity of coupling an emitter to a quantum network by combining the spatial and spectra...
Universal relaxation speedup in open quantum systems through transient conditional and unconditional resetting
Parvinder Solanki, Igor Lesanovsky, Gabriele Perfetto·Dec 10, 2025
Speeding up the relaxation dynamics of many-body quantum systems is important in a variety of contexts, including quantum computation and state preparation. We demonstrate that such acceleration can be universally achieved via transient stochastic re...
A Unified Linear Algebraic Framework for Physical Models and Generalized Contextuality
Farid Shahandeh, Theodoros Yianni, Mina Doosti·Dec 10, 2025
We develop a bottom-up, statistics-first framework in which the full probabilistic content of an operational theory is encoded in its matrix of conditional outcome probabilities of events (COPE). Within this setting, five model classes (preGPTs, GPTs...
Deep Thermalization and Measurements of Quantum Resources
Naga Dileep Varikuti, Soumik Bandyopadhyay, Philipp Hauke·Dec 10, 2025
Quantum resource theories (QRTs) provide a unified framework for characterizing useful quantum phenomena subject to physical constraints, but are notoriously hard to assess in experimental systems. In this letter, we introduce a unified protocol for ...
Measuring the Hall Viscosity of the Laughlin State on Noisy Quantum Computers
Ammar Kirmani, Andrew A. Allocca, Jian-Xin Zhu +3 more·Dec 10, 2025
Hall viscosity is a quantized nondissipative stress response of a fractional quantum Hall (FQH) fluid to adiabatic geometric deformations. Despite strong theoretical interest, its experimental observation in the FQH state has remained elusive, making...
Connecting single-layer $t$-$J$ to Kondo lattice models: Exploration with cold atoms
Hannah Lange, Eugene Demler, Jan von Delft +2 more·Dec 10, 2025
The Kondo effect, a hallmark of many-body physics, emerges from the antiferromagnetic coupling between localized spins and conduction fermions, leading to a correlated many-body singlet state. Here we propose to use the mixed-dimensional (mixD) bilay...
Photon emission by vortex particles accelerated in a linac
A. Yu. Murtazin, G. K. Sizykh, D. V. Grosman +3 more·Dec 10, 2025
We study the photon emission by charged spinless particles with phase vortices and an orbital angular momentum (OAM) projection in longitudinal electric and magnetic fields within the scalar QED. A realistic wave packet of an electron or ion accelera...
Two simple models derived from a quantum-mechanical particle on an elliptical path
Francisco M. Fernández·Dec 10, 2025
We analyze two simple models derived from a quantum-mechanical particle on an elliptical path. The first Hamiltonian operator is non-Hermitian but equivalent to an Hermitian operator. It appears to exhibit the same two-fold degeneracy as the particle...