Papers
Live trends in quantum computing research, updated daily from arXiv.
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16,723 papers in 12 months (-57% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Noise-limited secret key agreement with twin optical physically unclonable functions
Georgios M. Nikolopoulos·Jul 6, 2026
We investigate the use of twin optical fingerprints derived from correlated physical unclonable functions (PUFs), as a hardware-based platform for cryptographic key generation and distribution. Each fingerprint is associated with a random, yet reprod...
How Hard Is Quantum Advantage? A Cloud Microphysics Stress Test for Variational Quantum Models
Felix Herbort, Ellen Sarauer, Daniel Ohl de Mello +7 more·Jul 6, 2026
Quantum machine learning (QML) could have the potential to leverage advantages of quantum over classical computing but still lacks strong evidence of actual improvements and scalability, partly due to phenomena such as barren plateaus. In this paper,...
Error Mitigation in Bosonic Systems via Virtual Distillation
Leonardo Finocchiaro, Marco Robbio, Diogo Gomes +5 more·Jul 6, 2026
Virtual distillation is a promising error-mitigation technique that exploits multiple copies of a noisy quantum state to estimate observables as if measured on a purified state. Although originally introduced in the context of bosonic many-body syste...
Quantum orientation, Noether structure, composition of systems and operations
Heinz-Jürgen Schmidt·Jul 6, 2026
In this paper we argue that, in addition to the statistical structure of quantum theory, another structure, referred to here as the ``Noether structure," is necessary to describe the composition of systems and to define completely positive operations...
Photonic Cluster State Generation from a Quantum Dot Emitting in the Telecom C-band
Giora Peniakov, Reza Hekmati, Johannes Michl +9 more·Jul 6, 2026
Photonic cluster states are a key resource for photonic quantum information processing. So far, deterministic generation of these states has been limited to the near-infrared wavelength range. To achieve quantum advantage in communication while maint...
A Unified Electrostatic-to-Spin Framework for Asymmetric Multi-Gate CMOS Quantum Devices
Zeheng Wang, Yan Liu, Yue Hao +1 more·Jul 6, 2026
In advanced complementary metal-oxide-semiconductor (CMOS) quantum chips, compact gate stacks make it difficult to connect lithographic geometry, electrostatic confinement and many-electron spin filling in one transparent model. This connection is ce...
Emergence of the Scrooge Ensemble in the Sachdev-Ye-Kitaev Model
Zeyu Liu, Pengfei Zhang·Jul 6, 2026
The probabilistic nature of quantum measurement provides a direct window into the structure and complexity of many-body wave functions. When only part of a system is measured, the remaining degrees of freedom form an ensemble of post-measurement stat...
No Distributed Quantum Advantage for 3-Coloring Rooted Trees and 2-Coloring Even Cycles
Pierre Fraigniaud, Frédéric Magniez, Isabella Ziccardi·Jul 6, 2026
Significant effort has been devoted over the past decade to understanding whether quantum resources can provide advantages in distributed computing, and in particular whether they can help overcome locality constraints in networks, typically in Linia...
HamQASBench: A Hamiltonian-Informed Diagnostic Benchmark for Evaluating Quantum Architecture Search
Jiayang Niu, Akib Karim, Yan Wang +5 more·Jul 6, 2026
Quantum Architecture Search (QAS) automates the design of parameterized quantum circuits for variational quantum algorithms, yet existing benchmarks organize instances by molecular identity or qubit count -- criteria agnostic to Hamiltonian structure...
Hidden Gauge Freedom in Complex-Pole Hierarchical Equations of Motion
Tianchu Li, Andrés Montoya-Castillo·Jul 6, 2026
While complex-pole hierarchical equations of motion (HEOM) have dramatically expanded the reach of numerically exact quantum dynamics simulations of open quantum systems, they suffer from numerical instabilities rooted in the non-Hermitian structure ...
Handover-Optimal User Association Policy for LEO Satellite-based 5G NTN
Pradnya Taksande, Jainesh Mehta, Prasanna Chaporkar·Jul 6, 2026
The integration of Non Terrestrial Networks into 5G and beyond cellular systems has introduced a significant paradigm shift, enabling ubiquitous connectivity and extending services to previously unconnected and underserved remote regions. In particul...
Sector-memory obstruction to probe-level bath emergence in finite programmable qubit environments
Gaurav Sarmah, Ramakrishna Podila·Jul 6, 2026
Finite quantum environments can relax local probes without acting as canonical baths. We study this distinction for a probe qubit coupled to a programmable bath of ($N$) qubits under excitation-number-conserving dynamics. The conserved charge partiti...
Strain- and potential-controlled tunneling in monolayer MoS$_2$
Hasna Chnafa, Rachid El Aitouni, Clarence Cortes +2 more·Jul 6, 2026
We present a theoretical study of spin- and valley-resolved quantum transport in monolayer MoS$_2$ under the combined influence of mechanical strain and an external scalar potential, a combination whose simultaneous unexplored. Within an effective ma...
Quantum-Optical Bound States in the Continuum
Ruo Kun Cai, Zhi Jiao Deng, Chun Wang Wu +1 more·Jul 6, 2026
Bound states in the continuum (BICs) are counterintuitive localized states that lie within the continuum of extended states. While extensively realized and utilized in classical wave systems, it is still unclear what a close analog of BICs would be, ...
Magnetic graphs for cavity quantum electrodynamics
Sunkyu Yu, Xianji Piao, Namkyoo Park·Jul 6, 2026
Strengthening light-matter coupling has become a central challenge in cavity quantum electrodynamics (QED), enabling ultrafast gate operations, qubit protection, and deterministic nonlinear optics. As the coupling increases, even the simplest configu...
Mapping open quantum dynamics onto graphs
Kyuho Kim, Dayeong Lee, Seungkyun Park +3 more·Jul 6, 2026
Graph-theoretic frameworks have been widely employed in quantum physics to address the high-dimensional complexity of quantum systems. Although open quantum dynamics incorporates system-bath coupling via numerous interacting operators, it has been fo...
All-optical control of coherent perfect absorption via frequency conversion
Rikizo Ikuta, Hirokazu Kobayashi, Hiroki Takahashi·Jul 6, 2026
Coherent perfect absorption (CPA) extinguishes optical fields through interference and dissipation, but conventional implementations rely on material loss that is largely fixed after fabrication. Here we demonstrate all-optically controllable CPA bas...
A Path-Superposition Framework for Quantum Gate Teleportation
Santiago Ávila, Marco Enríquez·Jul 6, 2026
Quantum gate teleportation enables distant parties to implement nonlocal quantum operations without physically transferring the participating qubits, making it a promising primitive for distributed quantum computing. We introduce a general framework ...
Estimation of a sparse multi-qubit Hamiltonian via compressed sensing
Juntao Tu, Yuanlong Wang, Shuming Cheng +2 more·Jul 6, 2026
Hamiltonian estimation is an effective approach in studying the structure and dynamical evolution of quantum systems. The difficulty in estimating the Hamiltonian is that an $N$-qubit Hamiltonian has $4^N-1$ unknown parameters, requiring exponentiall...
Krylov complexity, mode-resolved complexity and entanglement entropy across phase transitions in the non-Hermitian extended Su-Schrieffer-Heeger model
Ling-Feng Zhang, Wing Chi Yu·Jul 6, 2026
We investigate phase transitions in the extended Su-Schrieffer-Heeger (SSH) model with next-nearest-neighbor hoppings and an imaginary staggered chemical potential. In the presence of small non-Hermiticity, exceptional points emerge in pairs from the...