Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Witness wedges in fidelity-deviation plane: separating teleportation advantage and Bell-inequality violation
Kyoungho Cho, Jeongho Bang·Nov 26, 2025
We develop a unified framework to analyze $d$-dimensional quantum teleportation through the joint geometry of two complementary figures of merit: average fidelity $F$ (how well a protocol works on average) and fidelity deviation $D$ (how uniformly it...
Quantum Optimality in the Odd-Cycle game: the topological odd-blocker, marked connected components of the giant, consistency of pearls, vanishing homotopy
Pete Rigas·Nov 26, 2025
We characterize optimality of Quantum strategies for the Odd-Cycle game. Separate from other game-theoretic settings, parallel repetition for the Odd-Cycle game is related to the foam problem, which can be formulated through a minimization of the sur...
Multi-path vector entanglement engineering via dark mode control in optomechanics
P. Djorwé, R. Altuijri, A. J. Almalki +2 more·Nov 26, 2025
We propose a scheme to generate multi-paths entanglement in an optomechanical system by exploiting polarized electromagnetic fields and dark mode control. Our system consists of two mechanically coupled mechanical resonators, which are driven by a co...
Mirror subspace diagonalization: A quantum Krylov algorithm with near-optimal sampling cost
Shota Kanasugi, Yuya O. Nakagawa, Norifumi Matsumoto +3 more·Nov 26, 2025
Quantum Krylov algorithms have emerged as a promising approach for ground-state energy estimation in the near-term quantum computing era. A major challenge, however, lies in their inherently substantial sampling cost, primarily due to the individual ...
Compilation Pipeline for Predicting Algorithmic Break-Even in an Early-Fault-Tolerant Surface Code Architecture
Tianyi Hao, Joseph Sullivan, Sivaprasad Omanakuttan +2 more·Nov 26, 2025
Recent experimental progress in realizing surface code on hardware, including demonstrations of break-even logical memory on devices with up to hundreds of physical qubits, has materially advanced the prospects for fault-tolerant quantum computation....
Generalized Heralded Generation of Non-Gaussian States Using an Optical Parametric Amplifier
Xiao-Xi Yao, Bo Zhang Yusuf Turek·Nov 26, 2025
The heralded optical parametric amplifier (OPA) has emerged as a promising tool for quantum state engineering. However, its potential has been limited to coherent state inputs. Here, we introduce a generalized heralded OPA protocol that unlocks a vas...
Fusion of classical and quantum kernels enables accurate and robust two-sample tests
Yu Terada, Yugo Ogio, Ken Arai +2 more·Nov 26, 2025
Two-sample tests have been extensively employed in various scientific fields and machine learning such as evaluation on the effectiveness of drugs and A/B testing on different marketing strategies to discriminate whether two sets of samples come from...
Integrated emitters with CMOS-compatible tuning for large scale quantum SiN photonic circuits
J. Witte, A. Shadmani, Zhe Liu +10 more·Nov 26, 2025
Next-generation scalable quantum photonic technologies operating at the single photon level rely on bringing together optimized quantum building blocks with minimal optical coupling losses. Achieving this necessitates the heterogeneous integration of...
Restoring a Missing Meta-Symmetry of Quantum Mechanics
Sheng Ran·Nov 25, 2025
In conventional quantum mechanics, all unitary evolution takes place within the space-time Hilbert space $\mathcal H_{xt}=L^2(\mathcal M_{xt})$, with time as the sole evolution parameter. The momentum-energy representation $φ(k,E)$ is treated merely ...
Tungsten Germanide Single-Photon Detectors with Saturated Internal Detection Efficiency at Wavelengths up to 29 μm
Benedikt Hampel, Daniel Kuznesof, Andrew S. Mueller +12 more·Nov 25, 2025
Superconducting nanowire single-photon detectors (SNSPDs) are among the most sensitive single-photon detectors available and have the potential to transform fields ranging from infrared astrophysics to molecular spectroscopy. However, extending their...
Defect Bootstrap: Tight Ground State Bounds in Spontaneous Symmetry Breaking Phases
Michael G. Scheer, Nisarg Chadha, Da-Chuan Lu +1 more·Nov 25, 2025
The recent development of bootstrap methods based on semidefinite relaxations of positivity constraints has enabled rigorous two-sided bounds on local observables directly in the thermodynamic limit. However, these bounds inevitably become loose in s...
Mode multiplexing for scalable cavity-enhanced operations in neutral-atom arrays
Ziv Aqua, Matthew L. Peters, David C. Spierings +4 more·Nov 25, 2025
Neutral atom arrays provide a versatile platform for quantum information processing. However, in large-scale arrays, efficient photon collection remains a bottleneck for key tasks such as fast, non-destructive qubit readout and remote entanglement di...
Nonextensive statistics for a 2D electron gas in noncommutative spaces
Bienvenu Gnim Adewi, Isiaka Aremua·Nov 25, 2025
This work investigates a quantum system described by a Hamiltonian operator in a two dimensional noncommutative space. The system consists of an electron subjected to a perpendicular magnetic field $\mathbf{B}$, coupled to a harmonic potential and an...
Many-Body Entanglement in Solid-State Emitters
Emma Daggett, Christian M. Lange, Bennet Windt +23 more·Nov 25, 2025
The preparation and control of quantum states lie at the heart of quantum information science (QIS). Recent advances in solid-state quantum emitters (QEs) and nanophotonics have transformed the landscape of quantum photonic technologies, enabling sca...
Higher-order Zeno sequences
Kasra Rajabzadeh Dizaji, Leeseok Kim, Milad Marvian +1 more·Nov 25, 2025
The quantum Zeno effect typically refers to freezing the dynamics of a quantum system through frequent observations. In general, quantum Zeno dynamics is obtained with an error of order $\mathcal{O}(1/N)$, where $N$ is the number of projective measur...
Super-resolution microscopy via fluctuation-enhanced spatial mode demultiplexing
Stanislaw Kurdzialek·Nov 25, 2025
We introduce a superresolution technique that combines spatial mode demultiplexing (SPADE) with emitter blinking. We show that temporal fluctuations not only enhance the precision of SPADE imaging, but also drastically simplify the measurement requir...
Exact WKB in all sectors II: Potentials with non-degenerate saddles
Tatsuhiro Misumi, Cihan Pazarbaşı·Nov 25, 2025
We discuss the exact quantization of general one-dimensional potentials in view of the exact-WKB formalism. Building on our previous work, we perform analytic continuations across different sectors via the complexification to the spectral (energy) pa...
Opportunities and Challenges of Computational Electromagnetics Methods for Superconducting Circuit Quantum Device Modeling: A Practical Review
Samuel T. Elkin, Ghazi Khan, Ebrahim Forati +5 more·Nov 25, 2025
High-fidelity numerical methods that model the physical layout of a device are essential for the design of many technologies. For methods that characterize electromagnetic effects, these numerical methods are referred to as computational electromagne...
Real-time Monitoring of Neon Film Growth for Electron-on-Neon Qubits
Sidharth Duthaluru, Kaiwen Zheng, Erik A. Henriksen +1 more·Nov 25, 2025
Electron-on-neon (eNe) charge states coupled to superconducting circuits are a promising platform for quantum computing. Control over the formation of these charge states requires techniques to track and control the growth of solid Ne films on the ci...
Multi-Field Relativistic Continuous Matrix Product States
Karan Tiwana, Antoine Tilloy·Nov 25, 2025
Relativistic continuous matrix product states (RCMPS) are a powerful variational ansatz for quantum field theories of a single field. However, they inherit a property of their non-relativistic counterpart that makes them divergent for models with mul...