Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Analytical fidelity calculations for photonic linear cluster state generation
Rohit Prasad, Simon D. Reiss, Giora Peniakov +5 more·May 16, 2025
By precisely timed optical excitation of their spin, optical emitters such as semiconductor quantum dots or atoms can be harnessed as sources of linear photonic cluster states. This significantly reduces the required resource overhead to reach fault-...
Flowing Through Hilbert Space: Quantum-Enhanced Generative Models for Lattice Field Theory
Jehu Martinez, Andrea Delgado·May 15, 2025
Sampling from high-dimensional and structured probability distributions is a fundamental challenge in computational physics, particularly in the context of lattice field theory (LFT), where generating field configurations efficiently is critical, yet...
Generation of frequency entanglement with an effective quantum dot-waveguide two-photon quadratic interaction
Mohamed Meguebel, Maxime Federico, Simone Felicetti +2 more·May 15, 2025
Light-matter interactions with quantum dots have been extensively studied to harness key quantum properties of photons, such as indistinguishability and entanglement. In this theoretical work, we exploit the atomic-like four-level structure of a quan...
Bra-ket entanglement, an indicator bridging entanglement, magic, and coherence
Zhong-Xia Shang, Si-Yuan Chen, Wenjun Yu +2 more·May 14, 2025
Understanding the intricate interplay between distinct quantum resources is a fundamental prerequisite for rigorously characterizing the boundary between classical and quantum technologies. Among the vast landscape of quantum resources, entanglement,...
Quantum Resonator as a Directional Quantum Emitter
Luiz O. R. Solak, Bruno L. Vermes, Antonio S. M. de Castro +2 more·May 14, 2025
Single-photon sources are essential for testing fundamental physics and for the development of quantum technologies. In this work a single-photon source is investigated, based on a two-photon Jaynes-Cummings system, where the resonator works as the q...
Robust transfer of a quantum state from an absorbed photon into a diamond spin.
Daisuke Ito, Y. Sekiguchi, Raustin Reyes +4 more·May 14, 2025
Conversion of a quantum state from a flying qubit to a memory qubit is crucial for distributed quantum computing. However, this requires precise spatiotemporal or frequency/phase alignment. Here, we experimentally demonstrate quantum teleportation-ba...
Unraveling spin entanglement using quantum gates with scanning tunneling microscopy-driven electron spin resonance
Eric D. Switzer, Jose Reina-G'alvez, G. Giedke +4 more·May 14, 2025
Quantum entanglement is a fundamental resource for quantum information processing, and its controlled generation and detection remain key challenges in scalable quantum architectures. Here, we numerically demonstrate the deterministic generation of e...
Differentiable Quantum Architecture Search in Quantum-Enhanced Neural Network Parameter Generation
Samuel Yen-Chi Chen, Chen-Yu Liu, Kuan-Cheng Chen +3 more·May 13, 2025
The rapid advancements in quantum computing (QC) and machine learning (ML) have led to the emergence of quantum machine learning (QML), which integrates the strengths of both fields. Among QML approaches, variational quantum circuits (VQCs), also kno...
Circuit Partitioning Using Large Language Models for Quantum Compilation and Simulations
Pranav Sinha, S. Jha, Sunny Raj·May 12, 2025
We are in the midst of the noisy intermediate-scale quantum (NISQ) era, where quantum computers are limited by noisy gates, some of which are more error-prone than others and can render the final computation incomprehensible. Quantum circuit compilat...
Entanglement dynamics and Page curves in random permutation circuits
Dávid Szász-Schagrin, Michele Mazzoni, Bruno Bertini +2 more·May 9, 2025
The characterization of ensembles of many-qubit random states and their realization via quantum circuits are crucial tasks in quantum-information theory. In this work, we study the ensembles generated by quantum circuits that randomly permute the com...
Variational quantum algorithms for permutation-based combinatorial problems: Optimal ansatz generation with applications to quadratic assignment problems and beyond
Dylan Laplace Mermoud, Andrea Simonetto, Sourour Elloumi·May 9, 2025
We present a quantum variational algorithm based on a novel circuit that generates all permutations that can be spanned by one- and two-qubits permutation gates. The construction of the circuits follows from group-theoretical results, most importantl...
Applied Post Quantum Cryptography: A Practical Approach for Generating Certificates in Industrial Environments
Nino Ricchizzi, Christian Schwinne, Jan Pelzl·May 7, 2025
The transition to post-quantum cryptography (PQC) presents significant challenges for certificate-based identity management in industrial environments, where secure onboarding of devices relies on long-lived and interoperable credentials. This work a...
Optical vortex generation by magnons with spin-orbit-coupled light
Ryusuke Hisatomi, Alto Osada, Kotaro Taga +5 more·May 6, 2025
Light possesses both spin and orbital angular momentum, which can spontaneously couple in spatially asymmetric optical fields. This phenomenon is referred to as optical spin-orbit coupling. This coupling is pivotal in modern optics due to its broad a...
Enhanced Simultaneous Quantum-Classical Communications Under Composable Security
Nicholas Zaunders, Ziqing Wang, Robert Malaney +2 more·May 6, 2025
Simultaneous quantum-classical communications (SQCC) protocols are a family of continuous-variable quantum key distribution (CV-QKD) protocols which allow for quantum and classical symbols to be integrated concurrently on the same optical pulse and m...
Time-delayed collective dynamics in waveguide QED and bosonic quantum networks
Carlos Barahona-Pascual, Hong Jiang, Alan C. Santos +1 more·May 5, 2025
This work introduces a theoretical framework to model the collective dynamics of quantum emitters in highly non-Markovian environments, interacting through the exchange of photons with significant retardations. The formalism consists on a set of coup...
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 $R_Q = h/(2e)^2 \simeq 6.45 \mathrm{k}\Omega$. ...
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...
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...
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...
Theory of quasiparticle generation by microwave drives in superconducting qubits
Shoumik Chowdhury, Max Hays, Shantanu R. Jha +4 more·May 1, 2025
Microwave drives play a central role in the control of superconducting quantum circuits, enabling qubit gates, readout, and parametric interactions. As the drive frequencies are typically an order of magnitude smaller than (twice) the superconducting...