Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,509 papers in 12 months (-19% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Revisiting the relaxation of constraints in gauge theories
Alexey Golovnev, Kirill Russkov·May 5, 2025
Recently, there were works claiming that path integral quantisation of gauge theories necessarily requires relaxation of Lagrangian constraints. As has also been noted in the literature, it is of course wrong since there perfectly exist gauge field q...
Hole-spin qubits in germanium beyond the single-particle regime
Andrea Secchi, Gaia Forghieri, Paolo Bordone +3 more·May 5, 2025
The intense simulation efforts on hole-spin qubits in germanium have so far focused primarily on singly occupied quantum dots. Here, we theoretically investigate three-hole qubits in germanium and demonstrate that their performance can rival that of ...
Flux-trapping fluxonium qubit
Kotaro Hida, Kohei Matsuura, S. Watanabe +1 more·May 5, 2025
In pursuit of superconducting quantum computing, fluxonium qubits have recently garnered attention for their large anharmonicity and high coherence at the sweet spot. Towards the large-scale integration of fluxonium qubits, a major obstacle is the ne...
Fast initialization of Bell states with Schr\"odinger cats in multi-mode systems
Miriam Resch, C. Padurariu, B. Kubala +1 more·May 5, 2025
Schr\"odinger cat states play an important role for applications in continuous variable quantum information technologies. As macroscopic superpositions they are inherently protected against certain types of noise making cat qubits a promising candida...
What is a Gaussian channel, and when is it physically implementable using a multiport interferometer?
Repana Devendra, Tiju Cherian John, Sumesh Kappil·May 5, 2025
Quantum Gaussian channels are fundamental models for communication and information processing in continuous-variable quantum systems. This work addresses both foundational aspects and physical implementation pathways for these channels. Firstly, we p...
Hyperinductance based on stacked Josephson junctions
Paul Manset, José Palomo, A. Schmitt +8 more·May 5, 2025
Superinductances are superconducting circuit elements that combine a large inductance with a low parasitic capacitance to ground, resulting in a characteristic impedance exceeding the resistance quantum $R_Q = h/(2e)^2 \simeq 6.45 \mathrm{k}\Omega$. ...
CONQURE: A Co-Execution Environment for Quantum and Classical Resources
Atulya Mahesh, Swastik Mittal, Frank Mueller·May 4, 2025
Cutting edge classical computing today relies on a combination of CPU-based computing with a strong reliance on accelerators. In particular, high-performance computing (HPC) and machine learning (ML) rely heavily on acceleration via GPUs for numerica...
Quantum Transduction: Enabling Quantum Networking
Marcello Caleffi, Laura d'Avossa, Xu Han +1 more·May 4, 2025
The complementary features of different qubit platforms for computing and communicating impose an intrinsic hardware heterogeneity in any quantum network, where nodes, while processing and storing quantum information, must also communicate through qu...
Triple-Identity Authentication: The Future of Secure Access
Suyun Borjigin·May 4, 2025
In password-based authentication systems, the username fields are essentially unprotected, while the password fields are susceptible to attacks. In this article, we shift our research focus from traditional authentication paradigm to the establishmen...
Packaged Quantum States for Gauge-Invariant Quantum Computation and Communication
Rongchao Ma·May 4, 2025
Packaged quantum states are gauge-invariant states in which all internal quantum numbers (IQNs) form an inseparable block. This feature gives rise to novel packaged entanglements that encompass all IQNs, which is important both for fundamental physic...
Robustness enhancement of universal noncyclic geometric gates via evolution optimization
Z. Qin, Yanmin Liang, Yizheng Yuan +2 more·May 4, 2025
Noncyclic geometric gates aim to overcome the stringent constraints of conventional cyclic conditions and enhance the flexibility in evolution choice. Conceptually, they can also avoid the error problems arising from the violation of cyclicity, thus ...
One- and two-dimensional cluster states for topological phase simulation and measurement-based quantum computation
Tao Jiang, J. Cai, Junxiang Huang +152 more·May 4, 2025
Symmetry-protected topological (SPT) phases are fundamental features of cluster states, serving as key resources for measurement-based quantum computation (MBQC). Generating large-scale cluster states and verifying their SPT phases are essential step...
The construction of a universal quantum gate set for the SU(2)k (k=5,6,7) anyon models via genetic optimized algorithm
Jiangwei Long, Yizhi Li, Jianxin Zhong +1 more·May 3, 2025
We study systematically numerical method into constructing a universal quantum gate set for topological quantum computation (TQC) using SU(2)k anyon models. The F-matrices and R-symbol were computed through the q-deformed representation theory of SU(...
Quantum Speedup for Hypergraph Sparsification
Chenghua Liu, Minbo Gao, Zhengfeng Ji +1 more·May 3, 2025
Graph sparsification serves as a foundation for many algorithms, such as approximation algorithms for graph cuts and Laplacian system solvers. As its natural generalization, hypergraph sparsification has recently gained increasing attention, with bro...
Monitoring the generation of photonic linear cluster states with partial measurements
Valentin Guichard, L. Vidro, Dario A Fioretto +11 more·May 3, 2025
Quantum states of light with many entangled photons are key resources for photonic quantum computing and quantum communication. In this work, we exploit a highly resource-efficient generation scheme based on a linear optical circuit embedding a fiber...
Quantum-Assisted Vehicle Routing: Realizing QAOA-based Approach on Gate-Based Quantum Computer
Talha Azfar, Osama Muhammad Raisuddin, Ruimin Ke +1 more·May 2, 2025
The Vehicle Routing Problem (VRP) is a fundamental combinatorial optimization challenge with broad applications in logistics and transportation. In this work, we present a quantum-assisted framework that integrates the Quantum Approximate Optimizatio...
Entropy-based analysis of single-qubit Otto and Carnot heat engines
Andrés Vallejo, Catty Lissardy, Santiago Silva-Gallo +2 more·May 2, 2025
From an entropy-based formulation of the first law of thermodynamics in the quantum regime, we investigate the performance of Otto-like and Carnot-like engines for a single-qubit working medium. Within this framework, the first law includes an additi...
Microwave-field quantum metrology with inherent robustness against detection losses enabled by Rydberg interactions
Stanisław Kurzyna, Bartosz Niewelt, Mateusz Mazelanik +3 more·May 2, 2025
Quantum sensing and metrology present one of the most promising near-term applications in the field of quantum technologies, with quantum sensors enabling unprecedented precision in measurements of electric, magnetic or gravitational fields and displ...
Bound-like State in a 1D Self-Similar Delta-Barrier Array
Jia-Chen Tang, Xu-Yang Hou, Yan He +1 more·May 2, 2025
We investigate a one-dimensional quantum system with a self-similar arrangement of delta-function potential barriers, exhibiting discrete scale invariance. The singular potential induces kinematically enforced symmetry breaking at $x=0$, decoupling t...
The Dance of the Sheared Eigenfunctions
J. Oliveira-Cony, Reinaldo de Melo e Souza, F. S. S. Rosa +1 more·May 2, 2025
In this work, we delve into the theory of sheared potentials in non-relativistic quantum mechanics. After defining what we mean by a family of sheared potentials, we consider these families in two particular but emblematic cases, the harmonic oscilla...