Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Witnessing Spin-Orbital Entanglement using Resonant Inelastic X-Ray Scattering
Zecheng Shen, Shuhan Ding, Zijun Zhao +2 more·Dec 7, 2025
Entanglement plays a central role in quantum technologies, yet its characterization and control in materials remain challenging. Recent developments in spectrum-based entanglement witnesses have enabled new strategies for quantifying many-body entang...
Experimental demonstration of scalable quantum cryptographic conferencing
Haotao Zhu, Zhenhua Li, Shuai Zhao +6 more·Dec 7, 2025
Quantum network enables a variety of quantum information processing tasks, where multi-user quantum communication is one of the important objectives. Quantum cryptographic conferencing serves as an essential solution to establish secure keys to reali...
Efficient graph-diagonal characterization of noisy states distributed over quantum networks via Bell sampling
Zherui Jerry Wang, Joshua Carlo A. Casapao, Naphan Benchasattabuse +6 more·Dec 7, 2025
Graph states are an important class of entangled states that serve as a key resource for distributed information processing and communication in quantum networks. In this work, we propose a protocol that utilizes a Bell sampling subroutine to charact...
Fault-Tolerant Information Processing with Quantum Weak Measurement
Qi Song, Hongjing Li, Chengxi Yu +4 more·Dec 7, 2025
Noise is an important factor that influences the reliability of information acquisition, transmission, processing, and storage. In order to suppress the inevitable noise effects, a fault-tolerant information processing approach via quantum weak measu...
Bound state in the continuum and multiple atom state transfer applications in a waveguide QED setup
Xiang Guo, Xiaojun Zhang, Mingzhu Weng +5 more·Dec 6, 2025
Bound states in the continuum (BICs) have been extensively exploited to enhance light--matter interactions in metamaterials, yet their emergence and utility in multi-atom waveguide platforms remain far less explored. Here we study atom--waveguide-dre...
Anubuddhi: A Multi-Agent AI System for Designing and Simulating Quantum Optics Experiments
S. K. Rithvik·Dec 6, 2025
We present Anubuddhi, a multi-agent AI system that designs and simulates quantum optics experiments from natural language prompts without requiring specialized programming knowledge. The system composes optical layouts by arranging components from a ...
Wigner-Husimi phase-space structure of quasi-exactly solvable sextic potential
Angelina N. Mendoza Tavera, Adrian M. Escobar Ruiz, Robin P. Sagar·Dec 6, 2025
In this study, we compare the Wigner function $W$, its modulus, and the Husimi distribution $H$ in a one-dimensional quantum system exhibiting a transition from a single-well to a double-well configuration, using the quasi-exactly solvable sextic osc...
Spin-photon Qubits for Scalable Quantum Network
Md Sakibul Islam, Kuldeep Singh, Yunhe Zhao +2 more·Dec 6, 2025
Solid-state quantum light sources offer a scalable pathway for interfacing stationary spin qubits with flying photonic qubits, forming the backbone of future quantum networks. Telecom-band spin-photonic qubits, operating in the 1260-1675 nm wavelengt...
The State-Operator Clifford Compatibility: A Real Algebraic Framework for Quantum Information
Kagwe A. Muchane·Dec 5, 2025
We revisit the Pauli-Clifford connection to introduce a real, grade-preserving algebraic framework for $n$-qubit quantum computation based on the tensor product $C\ell_{2,0}(\mathbb{R})^{\otimes n}$. In this setting, the bivector $J = e_{12}$ satisfi...
Dispersion Engineering of Planar Sub-millimeter Wave Waveguides and Resonators with Low Radiation Loss
Furkan Sahbaz, Simeon I. Bogdanov·Dec 5, 2025
Mm-wave and THz superconducting circuits find numerous applications in areas ranging from quantum information and sensing to high-energy physics. Planar THz transmission lines and resonators are fabrication-friendly, compact, and scalable, and they c...
Deterministic and Universal Frequency-Bin Gate for High-Dimensional Quantum Technologies
Xin Chen·Dec 5, 2025
High-dimensional photonic systems access large Hilbert spaces for quantum information processing. They offer proven advantages in quantum computation, communication, and sensing. However, implementing scalable, low-loss unitary gates across many mode...
Entanglement transition in unitary system-bath dynamics
Bo Xing, Giuliano Chiriacò, Paola Cappellaro +2 more·Dec 5, 2025
The evolution of a system coupled to baths is commonly described by a master equation that, in the long-time limit, yields a steady-state density matrix. However, when the same evolution is unraveled into quantum trajectories, it is possible to obser...
Temporal correlations and chaos from spacetime kernel
Rathindra Nath Das, Arnab Kundu, Matheus H. Martins Costa +1 more·Dec 5, 2025
We develop a finite-dimensional formulation of the recently introduced notion of ``timelike entanglement'', defined in terms of two-point functions between operators supported on different Cauchy slices. Using a local orthonormal operator basis, we r...
Deep-Space Optical Communication Receiver Based on Single Photon Coherent Beam Combination
Antoni Mikos-Nuszkiewicz, Karol Łukanowski, Konrad Banaszek +1 more·Dec 5, 2025
We introduce an alternative receiver architecture for deep-space optical communication, in which a single large aperture is replaced by an array of smaller ones with outputs combined coherently, employing phase stabilization based on photon counting ...
Exclusive Control of Quantum Memory Erasure
Mir Alimuddin, Nathan Shettell, Raja Yehia +2 more·Dec 5, 2025
Erasing memory is a fundamental operational task in quantum information processing, governed by Landauer's principle, which links information loss to thermodynamic work. We introduce and analyze assisted quantum erasure, where correlations with a rem...
Randomness quantification in spontaneous emission
Chenxu Li, Shengfan Liu, Xiongfeng Ma·Dec 5, 2025
Quantum coherence serves as a fundamental resource for generating intrinsic randomness, yet the quantification of randomness in quantum random number generators (QRNGs) based on spontaneous emission has remained largely phenomenological. Existing ran...
Heisenberg-Weyl bosonic phase spaces: emergence, constraints and quantum informational resources
Eloi Descamps, Astghik Saharyan, Arne Keller +1 more·Dec 5, 2025
Phase space quasi-probability functions provide powerful representations of quantum states and operators, as well as criteria for assessing quantum computational resources. In discrete, odd-dimensional systems (qudits), protocols involving only non-n...
Measurement-based Initial Point Smoothing and Control Approach to Quantum Memory Systems
Igor G. Vladimirov, Ian R. Petersen, Guodong Shi·Dec 5, 2025
This paper is concerned with a quantum memory system for storing quantum information in the form of its initial dynamic variables in the presence of environmental noise. In order to compensate for the deviation from the initial conditions, the classi...
Frequency-matching quantum key distribution
Hao-Tao Zhu, Yizhi Huang, Abdullah Rasmita +5 more·Dec 5, 2025
Quantum key distribution (QKD) enables information-theoretically secure communication against eavesdropping. However, phase instability remains a challenge across many QKD applications, particularly in schemes such as twin-field QKD and measurement-d...
Quantum geometry and $X$-wave magnets with $X=p,d,f,g,i$
Motohiko Ezawa·Dec 5, 2025
Quantum geometry is a differential geometry based on quantum mechanics. It is related to various transport and optical properties in condensed matter physics. The Zeeman quantum geometry is a generalization of quantum geometry including the spin degr...