Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Symmetry-Checking in Band Structure Calculations on a Noisy Quantum Computer
Shaobo Zhang, Akib Karim, H. Quiney +1 more·Jun 25, 2025
Band crossings in electronic band structures play an important role in determining the electronic, topological, and transport properties in solid-state systems, making them central to both condensed matter physics and materials science. The emergence...
Consistent Simulation of Fibonacci Anyon Braiding within a Qubit Quasicrystal Inflation Code
Marcelo M. Amaral·Jun 25, 2025
The simulation of non-Abelian anyon braiding is a critical step towards fault-tolerant quantum computation. We introduce a framework for this task based on a one-dimensional Quasicrystal Inflation Code (QIC). The code is defined by a local Hamiltonia...
Metamaterials in Superconducting and Cryogenic Quantum Technologies
A. Krasnok·Jun 24, 2025
The development of fault-tolerant quantum computers based on superconducting circuits faces critical challenges in qubit coherence, connectivity, and scalability. This review establishes metamaterials, artificial structures with on-demand electromagn...
Protocol for detecting the nonlocality of the multi-Majorana Systems
Bai Liu, Peng Qian, Zhan-qiang Cao +1 more·Jun 20, 2025
Majorana zero modes (MZMs) are non-Abelian quasiparticles with the potential to serve as topological qubits for fault-tolerant quantum computing due to their ability to encode quantum information nonlocally. In multi-Majorana systems configured into ...
Observation of Criticality-Enhanced Quantum Sensing in Nonunitary Quantum Walks
Lei Xiao, Saubhik Sarkar, Kunkun Wang +2 more·Jun 19, 2025
Quantum physics enables parameter estimation with precisions beyond the capability of classical sensors. Quantum criticality is a key resource for this quantum-enhanced sensing, but experimental realization has been challenging due to the complexity ...
A Topologically Fault-Tolerant Quantum Computer with Four Dimensional Geometric Codes
D. Aasen, Matthew B. Hastings, V. Kliuchnikov +8 more·Jun 18, 2025
Topological quantum codes are intrinsically fault-tolerant to local noise, and underlie the theory of topological phases of matter. We explore geometry to enhance the performance of topological quantum codes by rotating the four dimensional self-corr...
A Time-Symmetric Quantum Algorithm for Direct Eigenstate Determination
Shijie Wei, Jingwei Wen, Xiaogang Li +4 more·Jun 12, 2025
Time symmetry in quantum mechanics, where the current quantum state is determined jointly by both the past and the future, offers a more comprehensive description of physical phenomena. This symmetry facilitates both forward and backward time evoluti...
Compact and programmable large-scale optical processor in free space
Maria Gorizia Ammendola, Nazanin Dehghan, Lukas Scarfe +4 more·Jun 11, 2025
Photonic circuits are central to classical and quantum information processing. While integrated technologies dominate, free-space architectures are emerging as attractive alternatives, offering broad bandwidth and direct manipulation of optical modes...
Digital Quantum Simulation of the Kitaev Quantum Spin Liquid
Seongju Park, Eun-Gook Moon·Jun 10, 2025
The ground state of the Kitaev quantum spin liquid on a honeycomb lattice is an intriguing many-body state characterized by its topological order and massive entanglement. One of the significant issues is to prepare and manipulate the ground state as...
Fault-Tolerant Stabilizer Measurements in Surface Codes with Three-Qubit Gates.
Josias Old, Stephan Tasler, Michael J. Hartmann +1 more·Jun 10, 2025
Stabilizer quantum error correction (QEC) codes, in particular topological surface codes, are prime candidates to enable practical quantum computing. While it is widely believed that strictly fault-tolerant protocols can only be implemented using sin...
Orbit dimensions in linear and Gaussian quantum optics
Eliott Z. Mamon·Jun 9, 2025
We study the dimension of the manifold of quantum states (called orbit) that a given quantum state of light can reach under the dynamics of linear or Gaussian quantum optics. That is, we investigate how many directions in the Hilbert space a given st...
Learning Variational Quantum Circuit Parameters with Classical Artificial Intelligence for Quantum Phase Transition Detection
Xin Li, Zhang-Qi Yin·Jun 7, 2025
Learning many-body quantum states and quantum phase transitions remains a major challenge in quantum many-body physics. Classical machine learning methods offer certain advantages in addressing these difficulties. In this work, we propose a novel fra...
Quantum Data Centres: Why Entanglement Changes Everything
Angela Sara Cacciapuoti, Claudio Pellitteri, Jessica Illiano +4 more·Jun 3, 2025
The Quantum Internet is key for distributed quantum computing, by interconnecting multiple quantum processors into a virtual quantum computation system. This allows to scale the number of qubits, by overcoming the inherent limitations of noisy-interm...
Stacking the odds: full-stack quantum system design space exploration
Hila Safi, Medina Bandic, Christoph Niedermeier +3 more·Jun 3, 2025
Design space exploration (DSE) plays an important role in optimising quantum circuit execution by systematically evaluating different configurations of compilation strategies and hardware settings. In this paper, we conduct a comprehensive investigat...
Quantum harmonic oscillator, index theorem and spectral asymmetry
Shunrui Li, Yang Liu·May 27, 2025
We report a spectral asymmetry effect in the quantum harmonic oscillator, where its partition function is identified as the Chern character. This establishes a direct link between statistical mechanics, and topological invariants (Atiyah-Singer index...
Observation of hadron scattering in a lattice gauge theory on a quantum computer
Julian Schuhmacher, G. Su, Jesse J. Osborne +3 more·May 26, 2025
Scattering experiments are at the heart of high-energy physics (HEP), breaking matter down to its fundamental constituents, probing its formation, and providing deep insight into the inner workings of nature. In the current huge drive to forge quantu...
Anyonic Excitations in Warped and Curved AdS Backgrounds
Tzu-Miao Chou·May 23, 2025
This work studies anyonic excitations in warped and curved AdS$_3$ backgrounds via Chern-Simons theory. By incorporating geometric deformations such as conical defects, it is shown that curvature modifies the fusion and braiding properties through co...
NonHermitian Topological Phases in a Hermitian Modified Bosonic Kitaev Chain
Raditya Weda Bomantara, Ibsal Assi, J. P. F. LeBlanc +1 more·May 21, 2025
We present a modification to the bosonic Kitaev chain that, despite being Hermitian, supports both nonHermitian skin effect and nontrivial topological edge modes in its excitation Hamiltonian. We establish an exact mapping between the excitation Hami...
Distributed Realization of Color Codes for Quantum Error Correction
N. K. Chandra, David Tipper, Reza Nejabati +2 more·May 15, 2025
Color codes are a leading class of topological quantum error-correcting codes with modest error thresholds and structural compatibility with two-dimensional architectures, which make them well-suited for fault-tolerant quantum computing (FTQC). Here,...
Exploring Variational Entanglement Hamiltonians
Yanick S. Kind, B. Fauseweh·May 15, 2025
Recent advances in analog and digital quantum-simulation platforms have enabled exploration of the spectrum of entanglement Hamiltonians via variational algorithms. In this work we analyze the convergence properties of the variationally obtained solu...