Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Vanadium superconducting microwave resonators on silicon wafers
Y. Fujita, Y. Urade, Y. Hibino +4 more·Jul 1, 2026
Understanding the correlation between material properties and microwave losses in superconducting films is a crucial subject for developing low-loss materials for quantum circuits. We focus on vanadium (V) as a novel material for superconducting quan...
Hierarchy of hidden nonlocality: A genuine activation of Incompletability
Soumajit Das, Shampa Mondal, Preeti Parashar +1 more·Jul 1, 2026
Quantum nonlocality admits several operational manifestations, one of which emerges from sets of orthogonal quantum states that cannot be perfectly distinguished by local operations and classical communication (LOCC). Such sets are regarded as nonloc...
Three-qubit nonlocality paradoxes: beyond GHZ
Nadish de Silva, Santanil Jana, Ming Yin·Jul 1, 2026
Quantum nonlocality paradoxes, such as that of GHZ, provide maximally sharp logical obstructions to classical probabilistic models of quantum correlations. They are key resources in a broad variety of information-theoretic tasks that exhibit uncondit...
Bias-Preserving Gates and Quantum Error Correction With Dual-Rail Cat Codes
Debjyoti Biswas, Nikhil Sharma, Alberto Salvador +4 more·Jul 1, 2026
Scalable fault-tolerant quantum computation requires quantum error-correcting codes that simultaneously support universal logical operations, suppress hardware-specific noise, and enable efficient handling of photon-loss errors. Bosonic encodings suc...
Asymmetric Light Scattering from an Atomic System with Gain: A Quantum Analysis
Lorena Acevedo, Manuel Donaire·Jul 1, 2026
We study the the scattering of light by a binary system of identical atoms in which one of them is incoherently pumped. This system belongs to the kind of non-parity symmetric optical systems in which gains and losses are partially compensated. We ca...
Experimental Quantification of Layered Error Suppression in Fiber-Interconnected Quantum Data Centers
Seyed Navid Elyasi, Sima Bahrani, Rui Wang +3 more·Jul 1, 2026
We perform experiments to quantify error suppression in fiber-connected superconducting QPUs using combined error mitigation techniques, demonstrating over 20\% improvement in operational fidelity across interconnected quantum processing units under ...
Enhancing Nonreciprocity through Squeezing-Induced Symmetry Breaking
B. -B. Liu, D. -Y. Wang, J. Tang +4 more·Jul 1, 2026
Reservoir engineering enables unidirectional energy and signal flow. We establish squeezing-induced symmetry breaking between two cavities as a guiding principle for exponentially amplifying reservoir-mediated nonreciprocity. Rather than a simple sca...
GsOQDC: A GUI-Driven Interactive Framework for End-to-End Simulation of Optical Quantum Data Centers
Seyed Navid Elyasi, Sima Bahrani, Rui Wang +3 more·Jul 1, 2026
We present GsOQDC, an open-source graphical framework integrating optical-network design, distributed quantum-circuit compilation, scheduling, and DES-based remote-gate simulation, enabling end-to-end cross-layer evaluation of entanglement-resource d...
Quantum machine learning models for graphs
Frédéric Sauvage, Pranav Kalidindi, Frederic Rapp +1 more·Jul 1, 2026
Geometric Machine Learning (GML) successes have been achieved through the thorough study and design of new equivariant neural networks. In comparison, geometric quantum machine learning (GQML) models lack such a detailed understanding and, despite al...
Leakage Mobility and Passive Leakage Removal in Transmons with Tunable Couplers
Taneli Tolppanen, Gonzalo Martín-Vázquez, Sasu Tuohino +1 more·Jul 1, 2026
Qubit leakage is a noticeable source of errors for quantum computing. In quantum processors, leakage excitations traveling between qubits generate correlated errors and perturb gate implementations. Leakage mobility can also be utilized for creating ...
Spinterface-like mechanism of the chirality-induced spin selectivity in donor chiral-bridge acceptor complexes
Subhajit Sarkar, Oliver L. A. Monti, Yonatan Dubi·Jul 1, 2026
The chirality-induced spin selectivity (CISS) effect has been invoked to explain recent reports of differences in the time-resolved EPR signals between chiral and achiral molecules. However, the microscopic origin of these differences and their conne...
Overcoming the Speed-Fidelity Trade-off in Fast CZ Gates via Cyclic Control
Ze-An Zhao, Hai-Feng Zhang, Tian-Le Wang +10 more·Jul 1, 2026
High-fidelity quantum gates are essential for scalable quantum computation. However, at short durations, short-timescale waveform distortions break the time-reflection symmetry of control pulses, preventing the precise closure of cyclic evolution. Th...
Far-field spatial coherence driven by lossy objects: first-principles approach unifying scattering of quantum light and thermal emission
Alessandro Ciattoni·Jul 1, 2026
Far-field spatial coherence dictates the interference properties of scattered light and thermal emission. Traditionally, these phenomena are treated through disjointed paradigms: classical scattering descriptions assume cold objects lacking quantum f...
Heliciton-Assisted Chirality-Induced Spin Selectivity from Helical Dirac Current
Ju Gao, Fang Shen·Jul 1, 2026
We develop a quantized screw-mode mechanism for chirality-induced spin selectivity (CISS). The corresponding quantum, termed a heliciton, is a screw-symmetric environmental excitation with phase $φ-qz$, longitudinal momentum $\hbar q$, and energy $\h...
Robustness of Quantum Discord in Nonequilibrium Electronic Transport through Tunnel-Coupled Quantum Dots
Thingujam Yaiphalemba Meitei, Saikumar Krithivasan, Md. Manirul Ali +1 more·Jul 1, 2026
Quantum discord captures quantum correlations beyond entanglement and can remain finite even when the entanglement vanishes. We investigate the transient nonequilibrium dynamics and steady-state behavior of quantum discord and classical correlations ...
Influence of laser chirp and interferometer delay and imbalance on the performance of a time-bin BB84 quantum key distribution system
Loïc Millet, Alberto Boaron, Rob Thew +1 more·Jul 1, 2026
We investigate the effect of interferometer delay and imbalance on the performance of a BB84 time-bin quantum key distribution system. We simulate the impact of interference visibility on system performance and measure the visibility of a pair of int...
Open Quantum Systems Driven by Chirped Pulses: Quantized versus Semiclassical Fields and the Validity of the Rotating-Wave Approximation
Justin Zhengjie Tan, Frank Großmann, Yiying Yan +2 more·Jul 1, 2026
Population transfer via chirped rapid adiabatic passage is studied using open quantum and semiclassical models, with and without the rotating-wave approximation. A time-dependent variational approach based on the multiple-Davydov D$_2$ trial state is...
Reducing quantum resources for ADAPT-VQE via plateau-operator elimination and correlated mean-field downfolding
Phuoc Minh Vo, Thai Cong Ngoc Vu, Thien Ngoc Tran +2 more·Jul 1, 2026
Adaptive Derivative-Assembled Problem-Tailored variational quantum eigensolvers (ADAPT-VQE) represent one of the most promising approaches for quantum chemistry on near-term quantum devices. However, their optimization is slow and may stall due to va...
Near-Perfect Single-Photon Source via Ultrastrong Coupling
Ying Ren, Ying-Xue Ma, Jin-Feng Huang·Jul 1, 2026
Deterministic single-photon sources are indispensable core devices for quantum information technology, yet high-performance implementation remains a long-standing bottleneck for linear optical quantum computing. We propose a feasible scheme for deter...
Configuration-based understanding of superradiant phase transitions in Dicke lattices
Peng-Fei Wei, Zhihai Wang·Jul 1, 2026
The emergence of multiple superradiant phases in Dicke lattice models has attracted considerable attention in the quantum optics community. However, a unified understanding of the origin of multistability and its relation to different superradiant ph...