Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Which-crystal information and wave-particle duality in induced-coherence interferometry
L. Theerthagiri·Nov 28, 2025
We provide an operational reinterpretation of wave-particle complementarity in the low-gain Zou-Wang-Mandel (ZWM) induced-coherence interferometer. In the low gain limit, each photon pair is emitted by either one of two nonlinear crystals. Preparing ...
Delayed Choice Quantum Eraser Experiment Revisited: Causality and Informational Coherence
Taku Ohwada·Nov 28, 2025
An operationally well-defined delayed-choice quantum-eraser experiment is proposed, realizing a genuine delayed choice within presently available quantum-optical technology. A multimode quantum memory supplies a controlled and verifiable delay, ensur...
Extensive search of Shannon entropy-based randomness certification protocols
Robert Okuła, Piotr Mironowicz·Nov 27, 2025
Quantum technologies offer significant advancements in information processing and communication, notably in the domain of random number generation (RNG). The use of Bell inequalities enables users to certify the randomness of outputs produced by untr...
Foundations of Quantum Granular Computing with Effect-Based Granules, Algebraic Properties and Reference Architectures
Oscar Montiel Ross·Nov 27, 2025
This paper develops the foundations of Quantum Granular Computing (QGC), extending classical granular computing including fuzzy, rough, and shadowed granules to the quantum regime. Quantum granules are modeled as effects on a finite dimensional Hilbe...
A reconciliation of the Pryce-Ward and Klein-Nishina statistics for semi-classical simulations of annihilation photons correlations
Petar Žugec, Eric Andreas Vivoda, Mihael Makek +1 more·Nov 27, 2025
Two photons from the ground state para-positronium annihilation are emitted in a maximally entangled singlet state of orthogonal polarizations. In case of the Compton scattering of both photons the phenomenon of quantum entanglement leads to a measur...
A programming language combining quantum and classical control
Kinnari Dave, Louis Lemonnier, Romain Péchoux +1 more·Nov 27, 2025
The two main notions of control in quantum programming languages are often referred to as "quantum" control and "classical" control. With the latter, the control flow is based on classical information, potentially resulting from a quantum measurement...
High-Precision Fidelity Estimation with Common Randomized Measurements
Zhongyi Yang, Datong Chen, Zihao Li +1 more·Nov 27, 2025
Efficient fidelity estimation of multiqubit quantum states is crucial to many applications in quantum information processing. However, to estimate the infidelity $ε$ with multiplicative precision, conventional estimation protocols require (order) $1/...
RELiQ: Scalable Entanglement Routing via Reinforcement Learning in Quantum Networks
Tobias Meuser, Jannis Weil, Aninda Lahiri +1 more·Nov 27, 2025
Quantum networks are becoming increasingly important because of advancements in quantum computing and quantum sensing, such as recent developments in distributed quantum computing and federated quantum machine learning. Routing entanglement in quantu...
Enhancing information retrieval in quantum-optical critical systems via quantum measurement backaction
Cheng Zhang, Mauro Cirio, Xin-Qi Li +1 more·Nov 27, 2025
Continuous monitoring of open quantum-optical systems offers a promising route towards quantum-enhanced estimation precision. In such continuous-measurement-based sensing protocols, the ultimate precision limit is dictated, through the quantum Cramér...
A Time-Symmetric Formulation of Quantum Measurement: Reinterpreting the Arrow of Time as Information Flow
Shin-ichi Inage·Nov 27, 2025
This study proposes a time-symmetric framework for quantum measurement that restores microscopic reversibility at the level of the dynamical description while remaining compatible with causality and thermodynamic consistency. Instead of invoking a st...
Nonlinear Optical Quantum Communication with a Two-Dimensional Perovskite Light Source
Shuyue Feng, Zijian Gan, Camryn J. Gloor +2 more·Nov 27, 2025
Two-dimensional organic-inorganic hybrid perovskite (2D-OIHP) quantum wells are emerging as promising light sources for quantum communication technologies, owing to their ability to generate polarization-encoded optical signals. In this work, we expl...
Shaping Causality: Emergence of Nonlocal Light Cones in Long-Range Quantum Systems
Shreyas Sadugol, Giuseppe Luca Celardo, Fausto Borgonovi +1 more·Nov 27, 2025
While for non-relativistic short-range interactions, the spread of information is local, remaining confined in an effective light cone, long-range interactions can generate either nonlocal (faster-than-ballistic) or local (ballistic) spread of correl...
Experimental signatures of a $σ_zσ_x$ beam-splitter interaction between a Kerr-cat and transmon qubit
Josiah Cochran, Haley M. Cole, Hebah Goderya +5 more·Nov 26, 2025
Quantum error correction (QEC) requires ancilla qubits to extract error syndromes from data qubits which store quantum information. However, ancilla errors can propagate back to the data qubits, introducing additional errors and limiting fault-tolera...
A scalable advantage in multi-photon quantum machine learning
Yong Wang, Zhenghao Yin, Tobias Haug +6 more·Nov 26, 2025
Photons are promising candidates for quantum information technology due to their high robustness and long coherence time at room temperature. Inspired by the prosperous development of photonic computing techniques, recent research has turned attentio...
Zoo of Correlation Inequalities in Holography and Beyond
Kyan Louisia, Takato Mori, Herbie Warner·Nov 26, 2025
Information-theoretic inequalities often impose nontrivial constraints on holographic states. In this work, we study measurement-based classical and quantum correlations in holography, focusing on the proposed duals of classical correlation $J_W$, qu...
Holographically Emergent Gauge Theory in Symmetric Quantum Circuits
Akash Vijay, Jong Yeon Lee·Nov 26, 2025
We develop a novel holographic framework for mixed-state phases in random quantum circuits, both unitary and non-unitary, with a global symmetry $G$. Viewing the circuit as a tensor network, we decompose it into two parts: a symmetric layer, which de...
Finite Size Analysis of Decoy-State BB84 with Advantage Distillation
Jonas Treplin, Philipp Kleinpaß, Davide Orsucci·Nov 26, 2025
Advantage Distillation (AD) is a classical post-processing technique that enhances Quantum Key Distribution (QKD) protocols by increasing the maximum acceptable Quantum Bit Error Rate (QBER) and thus extending the distance at which QKD links can be s...
Quantum electrodynamic description of the neutral hydrogen molecule ionization
Hui-hui Miao·Nov 26, 2025
The ionization dynamics of a hydrogen molecule, serving as a fundamental benchmark in quantum chemistry, is investigated within a comprehensive framework combining quantum electrodynamics and the Lindblad master equation. This approach enables a firs...
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...
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...