Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Ultranarrow Bright Single-Photon Emitters in Diamond with Strong Broadband Phonon Decoupling
Swetapadma Sahoo, Péter Udvarhelyi, Jaden Li +6 more·Nov 9, 2025
Single-photon emitters are fundamental building blocks for quantum information processing, communication and sensing. However, unwanted interactions with bulk phonons in their host environment strongly limit their coherence and controllability. We re...
Quantum optical neural networks using atom-cavity interactions to provide all-optical nonlinearity
Chuanzhou Zhu, Tianyu Wang, Peter L. McMahon +1 more·Nov 9, 2025
Optical neural networks (ONNs) have been developed to enhance processing speed and energy efficiency in machine learning by leveraging optical devices for nonlinear activation and establishing connections among neurons. In this work, we propose a qua...
Active Noise Reduction in Si/SiGe Gated Quantum Dots
Rajat Bharadwaj, Parvathy Gireesan, Harikrishnan Sundaresan +5 more·Nov 9, 2025
Solid-state quantum technologies such as quantum dot qubits and quantum electrical metrology circuits rely on quantum phenomena at ultra-low energies, making them highly sensitive to various forms of environmental noise. Conventional passive filterin...
A Four-Level Ontological Framework for Quantum Field Theory: From Quantum Vacuum to Phenomenal Reality
Ali Reza Mirzaee·Nov 8, 2025
One of the foundational challenges in both Quantum Field Theory and the philosophy of physics lies in the traditional binary classification of entities as either real or unreal. The classical view posits that material entities are real, while mental ...
Simulating Clifford Circuits with Gaussian Elimination
Yuchen Pang, Edgar Solomonik·Nov 8, 2025
Quantum circuits are considered more powerful than classical circuits and require exponential resources to simulate classically. Clifford circuits are a special class of quantum circuits that can be simulated in polynomial time but still show importa...
Addressable gate-based logical computation with quantum LDPC codes
Laura Pecorari, Francesco Paolo Guerci, Hugo Perrin +1 more·Nov 8, 2025
Quantum computing relies on quantum error correction for high-fidelity logical operations, but scaling to achieve near-term quantum utility is highly resource-intensive. High-rate quantum LDPC codes can reduce error correction overhead, yet realizing...
Squeezed-vacuum bosonic codes
Nir Gutman, Eliya Blumenthal, Shay Hacohen-Gourgy +2 more·Nov 8, 2025
We introduce a family of bosonic quantum error-correcting codes built as a rotation-symmetric superposition of squeezed vacuum states, which promise protection against both loss and dephasing noise channels. The robustness of these "squeezed-vacuum c...
Super-resolution with Fourier measurements
S. A. Wadood, Shaurya Aarav, Kevin Liang +1 more·Nov 8, 2025
Resolving sources beyond the diffraction limit is important in imaging, communications, and metrology. Current image-based methods of super-resolution require phase information (either of the source points or an added filter) and perfect alignment wi...
Quantum Optimal Control of a Lambda System in the Density Matrix Formulation
Julia Cen, Domenico D'Alessandro·Nov 8, 2025
In various physical implementations of quantum information processing, qubits are realized in a Lambda type system configuration as two stable lower energy levels coupled indirectly via an unstable higher energy level, that is, in comparison, a lot m...
Converting coherence into work with a fully quantum engine
MinSik Kwon, Tobias Denzler, Rouven Maier +4 more·Nov 8, 2025
Heat engines convert thermal energy into mechanical work. We here report the experimental realization of a fully quantum engine that converts quantum coherence into work. A single solid-state spin in diamond is fueled by a coherent bath and cyclicall...
Strain-Tunable Spin Filtering and Valley Splitting Coexisting with Anomalous Hall Effect in 2D Half-Metallic VSe2/VN Heterostructure: Toward a Unified Spintronic-Valleytronic Platform
Vivek Chowdhury, Ahmed Zubair·Nov 8, 2025
Rapid progress in valleytronics and spintronics is limited by the scarcity of two-dimensional materials that simultaneously provide robust valley splitting and strong spin selectivity. Here we showed that a van der Waals heterostructure (VSe2/VN) bui...
Quantum-Like Correlations from Local Hidden-Variable Theories Under Conservation Law
Alejandro J. Garza, Jonte R. Hance·Nov 8, 2025
The precision with which we can measure operators that do not commute with conserved quantities is limited by the need to preserve the associated global symmetries. We show how to construct a local hidden-variable model that violates Bell inequalitie...
Beyond Penrose tensor diagrams with the ZX calculus: Applications to quantum computing, quantum machine learning, condensed matter physics, and quantum gravity
Quanlong Wang, Richard D. P. East, Razin A. Shaikh +3 more·Nov 8, 2025
We introduce the Spin-ZX calculus as an elevation of Penrose's diagrams and associated binor calculus to the level of a formal diagrammatic language. The power of doing so is illustrated by the variety of scientific areas we apply it to: permutationa...
Quantum vortices in entanglement: a novel idea for large vortex filaments
S. V. Talalov·Nov 8, 2025
In this study, we propose a new approach to describing certain macroscopic objects that can arise in a quantum fluid. These objects are formed by means of quantum entanglement from the circular-shaped mesoscale and microscale vortices, and can be int...
Tagged vector space, Part II: function space index and the implied functional integration measure
Filippus S. Roux·Nov 8, 2025
The definition of quantum states in terms of tagged vector spaces is generalized to incorporate the spatiotemporal and spin degrees of freedom. Considering a tagged vector space where the index space is a function space, representing the additional d...
Photodiode quantum efficiency for 2-μm light in the signal band of gravitational wave detectors
Julian Gurs, Nils Sueltmann, Christian Darsow-Fromm +2 more·Nov 8, 2025
Quantum technologies with quantum correlated light require photodiodes with near-perfect `true' quantum efficiency, the definition of which adequately accounts for the photodiode dark noise. Future squeezed-light-enhanced gravitational wave detectors...
Quantum-imaginarity-based quantum speed limit
Dong-Ping Xuan, Zhong-Xi Shen, Wen Zhou +2 more·Nov 8, 2025
The quantum speed limit sets a fundamental restriction on the evolution time of quantum systems. We explore the relationship between quantum imaginarity and the quantum speed limit by utilizing measures such as relative entropy, trace distance, and g...
Polynomial Algorithms for Simultaneous Unitary Similarity and Equivalence
Harikrishna VJ, Vittal Rao, Ramakrishnan K. R·Nov 8, 2025
We present an algorithm to solve the Simultaneous Unitary Similarity(S.U.S) problem which is to check if there exists a Similarity transformation determined by a Unitary $U$ s.t $UA_lU^*=B_l$, $l \in \{1,...,p\}$, where $A_l$ and $B_l$ are $nxn$ comp...
Recovery of optical losses with the Petz recovery map
Jinyan Chen, Minjeong Song, Valerio Scarani·Nov 8, 2025
Optical systems are a main platform for quantum information processing, while a hidden challenge in these systems is information loss due to scattering into unmonitored modes, typically modeled as state-independent beam-splitter interactions. While s...
Wave-Particle-Mixedness Relationships Based on lp-norm Coherence
Wei-Ning Li, Ming Fang, Yuan-Hong Tao +2 more·Nov 8, 2025
We investigate the relationships among the wave property, particle property and mixedness of quantum states based on the lp-norm coherence. By conforming that the lp-norm coherence is an appropriate measure of wave property and introducing a measure ...