Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Simulating sparse SYK model with a randomized algorithm on a trapped-ion quantum computer
Etienne Granet, Yuta Kikuchi, Henrik Dreyer +1 more·Jul 10, 2025
The Sachdev-Ye-Kitaev (SYK) model describes a strongly correlated quantum system that shows a strong signature of quantum chaos. Due to its chaotic nature, the simulation of real-time dynamics becomes quickly intractable by means of classical numer...
Kubo-Martin-Schwinger relation for energy eigenstates of SU(2)-symmetric quantum many-body systems
Jae Dong Noh, Aleksander Lasek, Jade LeSchack +1 more·Jul 9, 2025
The fluctuation-dissipation theorem (FDT) is a fundamental result in statistical mechanics. It stipulates that, if perturbed out of equilibrium, a system responds at a rate proportional to a thermal-equilibrium property. Applications range from parti...
Energy Spectra of Compressed Quantum States
Daochen Wang·Jul 9, 2025
Quantum algorithms for estimating the ground state energy of a quantum system often operate by preparing a classically accessible quantum state and then applying quantum phase estimation. Whether this approach yields quantum advantage hinges on the s...
Non-Gaussian Phase Transition and Cascade of Instabilities in the Dissipative Quantum Rabi Model
Mingyu Kang, Yikang Zhang, Kenneth R. Brown +1 more·Jul 9, 2025
The open quantum Rabi model describes a two-level system coupled to a harmonic oscillator. A Gaussian phase transition for the nonequilibrium steady states has been predicted when the bosonic mode is soft and subject to damping. We show that oscillat...
Phenomenological constraints on "impossible" measurements
Jesse Huhtala, Iiro Vilja·Jul 9, 2025
In this article, we analyze an "impossible measurement" scenario presented by Sorkin. This scenario involving a joint measurement on spacelike separated systems in an intermediary region has widely been discussed in the quantum field theory measureme...
Algebraic States in Continuum in $ d\gt 1$ Dimensional Non-Hermitian Systems
Ao Yang, Kai Zhang, Chen Fang·Jul 9, 2025
We report the existence of algebraically localized eigenstates embedded within the continuum spectrum of 2D non-Hermitian systems with a single impurity. These modes, which we term algebraic states in continuum (AICs), decay algebraically as $1/|r|$ ...
No Physics Required ! a Visual-Based Introduction to GKP Qubits for Computer Scientists
R. A. Wolf, Pavithran Iyer·Jul 9, 2025
With the significance of continuous-variable quantum computing increasing thanks to the achievements of lightbased quantum hardware, making it available to learner audiences outside physics has been an important yet seldomtackled challenge. Similarly...
Relaying Quantum Information
Yigal Ilin, Uzi Pereg·Jul 9, 2025
Quantum relays are central to both quantum communication and distributed quantum computing, enabling long-distance transmission and modular architectures. Unlike classical repeaters, quantum repeaters preserve coherence without amplifying quantum inf...
Two Variations of Quantum Phase Estimation for Reducing Circuit Error Rates: Application to the Harrow--Hassidim--Lloyd Algorithm
Yonghae Lee, Minjin Choi, Youngho Min +2 more·Jul 9, 2025
We introduce two variations of the quantum phase estimation algorithm: quantum shifted phase estimation and quantum punctured phase estimation. The shifted method employs a bit-string left shift to discard the most significant bit and focus on lower-...
Predict and Conquer: Navigating Algorithm Trade-Offs with Quantum Design Automation
Simon Thelen, Wolfgang Mauerer·Jul 9, 2025
Combining quantum computers with classical compute power has become a standard means for developing algorithms and heuristics that are, eventually, supposed to beat any purely classical alternatives. While in-principle advantages for solution quality...
Efficient Implementation of a Single-Qutrit Gate Set via Coherent Control
Xiangmin Yu, Xiang Deng, Wen Zheng +15 more·Jul 9, 2025
Qutrit offers the potential for enhanced quantum computation by exploiting an enlarged Hilbert space. However, the synthesis of high-fidelity and fast qutrit gates, particularly for single qutrit, remains an ongoing challenge, as it involves overcomi...
Quantum simulation of scattering amplitudes and interferences in perturbative QCD
Herschel A. Chawdhry, M. Pellen, Simon Williams·Jul 9, 2025
A flagship application of quantum computers is the simulation of other quantum systems, including quantum field theories. In this article, we show how quantum computers can be employed to naturally calculate Feynman diagrams and their interferences i...
Flexible Readout and Unconditional Reset for Superconducting Multiqubit Processors with Tunable Purcell Filters.
Yongxi Xiao, Da'er Feng, Xuemei Gu +18 more·Jul 9, 2025
Achieving high-fidelity qubit readout and reset while maintaining qubit coherence is crucial for quantum error correction and advanced quantum algorithms. Here, we design and experimentally demonstrate a scalable architecture based on frequency-tunab...
Integer Factorization: Another perspective
G. R. Bansimba, R. F. Babindamana·Jul 9, 2025
Integer factorization is a fundamental problem in algorithmic number theory and computer science. It is considered as a one way or trapdoor function in the (RSA) cryptosystem. To date, from elementary trial division to sophisticated methods like the ...
Quantum sensing with ultracold simulators in lattice and ensemble systems: a review
Keshav Das Agarwal, Sayan Mondal, Ayan Sahoo +3 more·Jul 8, 2025
Sensing of parameters is an important aspect in all disciplines, with applications ranging from fundamental science to medicine. Quantum sensing and metrology is an emerging field that lies at the cross-roads of quantum physics, quantum technology, a...
Fibonacci Waveguide Quantum Electrodynamics
Florian Bönsel, Flore K. Kunst, Federico Roccati·Jul 8, 2025
Waveguide quantum electrodynamics (QED) provides a powerful framework for engineering quantum interactions, traditionally relying on periodic photonic arrays with continuous energy bands. Here, we investigate waveguide QED in a fundamentally differen...
Extracting filtered signal statistics of continuously measured quantum systems
Anthony Kiely, Gabriel T. Landi·Jul 8, 2025
The joint state of a continuously monitored quantum system and the classical filtered measurement record has recently been shown to be described by a quantum Fokker-Planck master equation [Phys. Rev. Lett. 129, 050401 (2022)]. We present a determinis...
What's my phase again? Computing the vacuum-to-vacuum amplitude of quadratic bosonic evolution
Nicolás Quesada·Jul 8, 2025
Quadratic bosonic Hamiltonians and their associated unitary transformations form a fundamental class of operations in quantum optics, modelling key processes such as squeezing, displacement, and beam-splitting. Their Heisenberg-picture dynamics simpl...
Low-depth quantum error correction via three-qubit gates in Rydberg atom arrays
Laura Pecorari, Sven Jandura, Guido Pupillo·Jul 8, 2025
Quantum error correction (QEC) requires the execution of deep quantum circuits with large numbers of physical qubits to protect information against errors. Designing protocols that can reduce gate and space-time overheads of QEC is therefore crucial ...
Matrix-product entanglement characterizing the optimality of state-preparation quantum circuits
Shuo Qi, Wen-Jun Li, Gang Su +1 more·Jul 8, 2025
Multipartite entanglement offers a powerful framework for understanding the complex collective phenomena in quantum many-body systems that are often beyond the description of conventional bipartite entanglement measures. Here, we propose a class of m...