Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Scalable Graph State Generation with O(1) Local Feedforward in Quantum Networks
Xiaoyi Zheng, Chan-Tong Lam, Lin Chen +1 more·Jun 15, 2026
The development of quantum networks faces a key challenge: the contradiction between probabilistic long-range entanglement generation and finite coherence time. Existing routing protocols typically focus on global state computation or path optimizati...
The Proxy Knows Too Much: Sealing LLM API Routers with Attested TEEs
Sipeng Xie, Qianhong Wu, Hengrun Lu +4 more·Jun 15, 2026
Agents increasingly access large language models (LLMs) through API routers. A router terminates the client's transport-layer security session and opens a separate upstream session, so it holds the full interaction in plaintext. This makes the router...
Optimizing resource bounds in direct fidelity estimation
Netanel Barel, Lee Peleg, Yotam Kadish +2 more·Jun 15, 2026
Direct fidelity estimation provides a way to estimate the fidelity between an experimentally prepared state and a desired pure target state without performing full tomography. Two influential formulations were introduced in 2011 by Flammia and Liu an...
Neural network inverse design of nanophotonic scintillators
Nathan Regev, Avner Shultzman, Francis Loignon-Houle +2 more·Jun 15, 2026
Scintillators are materials converting high-energy radiation into optical light, essential in a range of technologies such as medical imaging systems and security scanners. Scintillator development and optimization have remained limited by the comple...
Reconstruction of detector error model for quantum error correction
Cheng Ye, Pan Zhang·Jun 15, 2026
Fault-tolerant quantum computing fundamentally relies on the accurate characterization of circuit-level noise to optimize decoding algorithms. However, extracting complex multi-body error correlations remains challenging. Contemporary greedy inferenc...
Bi-qutrit entangled edge states of positive partial transposes with largest ranks
Kyung Hoon Han, Seung-Hyeok Kye·Jun 15, 2026
Whenever $E$ is an eight dimensional subspace of the bi-qutrit quantum system whose orthogonal complement is spanned by a vector of Schmidt rank three, we show that there exist PPT entangled edge states with the range space $E$ whose partial transpos...
QALM: Escaping Local Minima via Interleaved Exploration and Exploitation in Quantum Circuit Optimization
Aidan Wagner, Mingkuan Xu, Pengyu Liu +2 more·Jun 15, 2026
Quantum circuit optimizers face a fundamental limitation in how they tolerate temporary cost increases. At one extreme, greedy rule-based optimizers immediately apply any cost-reducing transformation, achieving high efficiency but quickly becoming tr...
Efficient Magic State Factory Via Transversal Non-Clifford Gate
I-Chi Chen, Hrushikesh Pramod Patil, Huiyang Zhou +1 more·Jun 15, 2026
Magic-state preparation is a central component of fault-tolerant quantum computing. Recent theoretical and experimental successes in code-switch-based magic-state preparation have underscored the promise of these methods for quantum error correction....
The Distribution Postulate in Algorithmic Bohmian Mechanics
Jeffrey A. Barrett, Eddy Keming Chen, Josiah Lopez-Wild·Jun 15, 2026
In order to make the right empirical predictions Bohmian mechanics requires a special statistical boundary condition -- the distribution postulate -- but it is unclear how best to understand this condition. We show how one might use the theory of alg...
Enhancing Quantum Machine Learning with Anyons
Da Zhang, Wen-Qiang Liu, Zhaohui Wei +1 more·Jun 15, 2026
The power of quantum computing and quantum machine learning relies on harnessing uniquely quantum phenomena as computational resources. While superposition, coherence and entanglement have been central to this effort, the role of particle exchange st...
Bright Emission from Dark Sources in Hyperbolic Media
Evgenii E. Narimanov·Jun 14, 2026
Hyperbolic media enable ultra-strong light-matter interactions through their extreme field localization and small mode volumes, but low-loss realizations are fundamentally limited to the mid-infrared, owing to the long lifetimes of optical phonons in...
Enhanced Sensitivity near a Quantum Exceptional Point in the Absence of Engineered Dissipation
Réouven Assouly, Harry Hanlim Kang, Aziza Almanakly +8 more·Jun 14, 2026
Non-Hermitian systems exhibit phenomena absent from Hermitian systems, including exceptional points (EPs), at which two or more eigenvectors coalesce. Conventional implementations rely on gain and loss, which strongly limit quantum coherence. Here, f...
Readout-Induced Leakage in Superconducting Circuits with Nonlinear Couplings
Sumeru Hazra, Wei Dai, Daniel K. Weiss +3 more·Jun 14, 2026
In superconducting circuits, drive-induced unwanted transitions limit the readout power, thereby constraining readout speed and fidelity. When such transitions excite the qubit into leakage states, they produce correlated errors that are particularly...
Adiabatically-induced Kawaguchi geometry and jerk in quantum-classical systems
Athanasios Chatzistavrakidis, Larisa Jonke, Ryan Requist·Jun 14, 2026
Adiabatically eliminating the quantum degrees of freedom in a mixed quantum-classical system produces an effective force in the classical equation of motion. The elimination can be made to any order in the adiabatic parameter, generating a series of ...
Quantum Algorithm for Open-System Battery Cathodes by Modeling Multiple Strongly Coupled Holstein Polarons with Chain-Mapped Caldeira-Leggett Dynamics
Joshua M. Courtney·Jun 14, 2026
Cathode lithiation occupies a chemical regime of tightly localized orbitals, narrow bandwidths, and strong electron-lattice coupling. The defining electrochemical observables (open-circuit voltage and differential capacity) are open-system, reservoir...
Influence of the Electron's Anomalous Magnetic Dipole Moment on High-Atomic-Number Atoms
C. A. S. Almeida, J. Auto-Neto·Jun 14, 2026
Super-heavy atoms ($Z > 100$) are usually studied in the context of the so-called ``Quantum Electrodynamics of Strong Fields''. In this theory the problem of the singularity in the electron energy whenever $Z > 137$ is overcome. This is done by consi...
Learning ground state observables from quantum computing experiments
Ben Jaderberg, Freya Shah, Minjun Jeon +3 more·Jun 14, 2026
Recent theoretical progress has established conditions under which machine learning models can efficiently predict ground-state properties of gapped local Hamiltonians when trained on quantum-generated data. Previous experimental demonstrations in th...
Quantum Measurement and Continuous Markov Processes
Chris Jackson·Jun 14, 2026
These are the lecture notes for a course on diffusive quantum measuring instruments. They were prepared and delivered at the Perimeter Institute on Mondays and Thursdays, from 2:30 to 4:00 PM, beginning October 27th, 2025 and ending December 11th, 20...
Adiabatic preparation of a fractional quantum Hall fluid by coherently pumping atoms from a Bose-Einstein condensate
Alberto Tabarelli de Fatis, Christof Weitenberg, Alexander Schnell +2 more·Jun 14, 2026
We propose a protocol to adiabatically prepare a many-particle fractional quantum Hall fluid of bosonic ultracold atoms exploiting a time-dependent coherent coupling of a strongly interacting atomic state with a large dilute Bose-Einstein condensate....
Experimental Observation of Dynamical Phase Transitions in a Dephased Photonic Quantum Walk
Xiaojian Huang, Lei Xiao, Bingzi Huo +3 more·Jun 14, 2026
Dynamical phase transitions in open quantum systems govern how non-equilibrium states relax toward a stationary state. We study these transitions experimentally using a discrete-time photonic quantum walk on a three-node graph. A tunable synthetic ga...