Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum information processing in modular cavity QED architectures
Z. M. McIntyre·May 7, 2025
This thesis contains a collection of articles exploring various aspects of quantum information processing with cavity quantum electrodynamics (QED), starting with qubit noise spectroscopy and building towards the longer-term goal of modular quantum-c...
Approximate quadratization of high-order hamiltonians for combinatorial quantum optimization
Sabina Druagoi, Alberto Baiardi, Daniel J. Egger·May 7, 2025
Combinatorial optimization problems have wide-ranging applications in industry and academia. Quantum computers may help solve them by sampling from carefully prepared Ansatz quantum circuits. However, current quantum computers are limited by their qu...
Impact and mitigation of Hamiltonian characterization errors in digital-analog quantum computation
Mikel Garcia-de-Andoin, Alatz Álvarez-Ahedo, Adrián Franco-Rubio +1 more·May 6, 2025
Digital-analog is a universal quantum computing paradigm which employs the natural entangling Hamiltonian of the system and single-qubit gates as resources. Here, we study the stability of these protocols against Hamiltonian characterization errors. ...
Digital quantum simulations of scattering in quantum field theories using W states
R. Farrell, Nikita A. Zemlevskiy, Marc Illa +1 more·May 6, 2025
High-energy particle collisions can convert energy into matter through the inelastic production of new particles. Quantum computers are an ideal platform for simulating the out-of-equilibrium dynamics of collisions and the formation of subsequent man...
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 ...
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(...
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...
A new approximate Eastin-Knill theorem
Rhea Alexander·May 1, 2025
Transversal encoded gatesets are highly desirable for fault tolerant quantum computing. However, a quantum error correcting code which exactly corrects for local erasure noise and supports a universal set of transversal gates is ruled out by the East...
Preparation Circuits for Matrix Product States by Classical Variational Disentanglement
Refik Mansuroglu, Norbert Schuch·Apr 30, 2025
We study the classical compilation of quantum circuits for the preparation of matrix product states (MPS), which are quantum states of low entanglement with an efficient classical description. Our algorithm represents a near-term alternative to previ...
Iceberg Beyond the Tip: Co-Compilation of a Quantum Error Detection Code and a Quantum Algorithm
Yuwei Jin, Zichang He, Tianyi Hao +4 more·Apr 29, 2025
The rapid progress in quantum hardware is expected to make them viable tools for the study of quantum algorithms in the near term. The timeline to useful algorithmic experimentation can be accelerated by techniques that use many noisy shots to produc...
A Quantum Range-Doppler Algorithm for Synthetic Aperture Radar Image Formation
Alessandro Giovagnoli, S. Huber, Gerhard Krieger·Apr 29, 2025
Synthetic aperture radar (SAR) is a well established technology in the field of Earth remote sensing. Over the years, the resolution of SAR images has been steadily improving and the pixel count increasing as a result of advances in the sensor techno...
Transversal Gates in Nonadditive Quantum Codes
Chao Zhang, Zipeng Wu, Shilin Huang +1 more·Apr 29, 2025
Transversal gates play a crucial role in suppressing error propagation in fault-tolerant quantum computation, yet they are intrinsically constrained: any nontrivial code encoding a single logical qubit admits only a finite subgroup of $\mathrm{SU}(2)...
Petz recovery maps of single-qubit decoherence channels in an ion trap quantum processor
Wen-Han Png, Valerio Scarani·Apr 29, 2025
The Petz recovery map provides a near-optimal reversal of quantum noise, yet proposals for its implementation are only recent. We propose a physical realization of the exact state-specific Petz map in an ion trap for qubit decoherence channels. Our c...
Quantum Error Correction in Quaternionic Hilbert Spaces
Valentine Nyirahafashimana, Nurisya Mohd Shah, Umair Abdul Halim +2 more·Apr 28, 2025
We propose quaternion-based strategies for quantum error correction by extending quantum mechanics into quaternionic Hilbert spaces. Building on the properties of quaternionic quantum states, we define quaternionic analogues of Pauli operators and qu...
Spectral form factor of quadratic $R$-para-particle SYK model with Random Matrix Coupling
Tingfei Li·Apr 27, 2025
This paper investigates the spectral form factor (SFF) of the quadratic $R$-para-particle Sachdev-Ye-Kitaev ($R$-PSYK$_2$) model with various random matrix ensemble couplings. We generalize previous work on Gaussian Unitary Ensemble (GUE) couplings t...
Classical simulation of parity-preserving quantum circuits
C. Wille, Sergii Strelchuk·Apr 27, 2025
We present a classical simulation method for fermionic quantum systems which, without loss of generality, can be represented by parity-preserving circuits made of two-qubit gates in a brick-wall structure. We map such circuits to a fermionic tensor n...
Efficient witnessing and testing of magic in mixed quantum states
Tobias Haug, P. S. Tarabunga·Apr 25, 2025
Nonstabilizerness or `magic' is a crucial resource for quantum computers which can be distilled from noisy quantum states. However, determining the magic of mixed quantum has been a notoriously difficult task. Here, we provide efficient witnesses of ...
Optical Schr\"odinger cat states generation using cubic phase resource state and beamsplitter
A. V. Baeva, A. S. Losev, I. Sokolov·Apr 25, 2025
Squeezed Schr\"odinger cat states are a valuable resource for quantum error correction and quantum computing. In this paper, we investigate the gate for generating such states in the optical regime. Our scheme is based on the entanglement between an ...