Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Distributed quantum algorithm for divergence estimation and beyond
Honglin Chen, Wei Xie, Yingqi Yu +2 more·Mar 12, 2025
With the rapid advancement of quantum information technology, designing efficient distributed quantum algorithms to perform various information processing tasks remains challenging. In this paper, we consider a distributed scenario where two parties,...
Variational preparation of normal matrix product states on quantum computers
Ben Jaderberg, George Pennington, Kate V. Marshall +6 more·Mar 12, 2025
Preparing matrix product states (MPSs) on quantum computers is an essential routine in the simulation of many-body physics. However, widely-used schemes based on staircase circuits are often too deep to execute on current hardware. Here we demonstrat...
Quantum Gate Dynamics Beyond the Rotating-Wave Approximation using Multi-Timescale Quantum Averaging Theory
Kristian D. Barajas, Wesley C. Campbell·Mar 11, 2025
We present a quantum averaging theory (QAT) for analytically modeling unitary gate dynamics in driven quantum systems beyond the rotating-wave approximation. QAT addresses the simultaneous presence of distinct timescales by generating a rotating fram...
Noise-Robust Estimation of Quantum Observables in Noisy Hardware
Amin Hosseinkhani, Fedor Šimkovic, Alessio Calzona +6 more·Mar 9, 2025
Error mitigation is essential for extracting reliable results from quantum computations performed on noisy intermediate-scale quantum hardware. Here we introduce Noise-Robust Estimation (NRE), a noise-agnostic framework that suppresses estimation bia...
Resource Constraint Estimation of In-Quantum Implementated Mini-AES
Syed Shahmir, Ghulam Murtaza, Ala-Al-Fuqaha +2 more·Mar 9, 2025
The advancement in quantum technology has brought the implementation of Grover's Search attack on cybersecurity algorithms much closer to reality. For such tasks, the Hilbert space has to be designed to make the relation between the input and output ...
Implementation and verification of coherent error suppression using randomized compiling for Grover's algorithm on a trapped-ion device
Masatoshi Ishii, Hammam Qassim, Tomochika Kurita +4 more·Mar 7, 2025
In near-term quantum computations that do not employ error correction, noise can proliferate rapidly, corrupting the quantum state and making results unreliable. These errors originate from both decoherence and control imprecision. The latter can man...
Bypassing orthogonalization in the quantum DPP sampler
M. Fanuel, R. Bardenet·Mar 7, 2025
Given an $n\times r$ matrix $X$ of rank $r$, consider the problem of sampling $r$ integers $\mathtt{C}\subset \{1, \dots, n\}$ with probability proportional to the squared determinant of the rows of $X$ indexed by $\mathtt{C}$. The distribution of $\...
Long-range nonstabilizerness and quantum codes, phases, and complexity
Fuchuan Wei, Zi-Wen Liu·Mar 6, 2025
As a necessary resource for quantum computational advantage, quantum magic (nonstabilizerness) is of fundamental importance in the study of quantum computation and physics. We develop a systematic theory of \emph{long-range magic (LRM)} -- nonstabili...
Scalable quantum simulator with an extended gate set in giant atoms
Guangze Chen, Anton Frisk Kockum·Mar 6, 2025
Quantum computation and quantum simulation require a versatile gate set to optimize circuit compilation for practical applications. However, existing platforms are often limited to specific gate types or rely on parametric couplers to extend their ga...
Systematic benchmarking of quantum computers: status and recommendations
Jeanette Miriam Lorenz, T. Monz, J. Eisert +11 more·Mar 6, 2025
Architectures for quantum computing can only be scaled up when they are accompanied by suitable benchmarking techniques. The document provides a comprehensive overview of the state and recommendations for systematic benchmarking of quantum computers....
AppQSim: Application-oriented benchmarks for Hamiltonian simulation on a quantum computer
Etienne Granet, Henrik Dreyer·Mar 6, 2025
We introduce AppQSim, a benchmarking suite for quantum computers focused on applications of Hamiltonian simulation. We consider five different settings for which we define a precise task and score: condensed matter and material simulation (dynamic an...
Calibrating magnetic flux control in superconducting circuits by compensating distortions on timescales from nanoseconds up to tens of microseconds
C. Hellings, N. Lacroix, A. Remm +8 more·Mar 6, 2025
Fast tuning of the transition frequency of superconducting qubits using magnetic flux is essential, for example, for realizing high-fidelity two-qubit gates with low leakage or for reducing errors in dispersive qubit readout. To apply accurately shap...
Logical Operations with a Dynamical Qubit in Floquet-Bacon-Shor Code.
Xuandong Sun, Longcheng Li, Zhiyi Wu +29 more·Mar 5, 2025
Quantum error correction (QEC) protects quantum systems against inevitable noises and control inaccuracies, providing a pathway toward fault-tolerant (FT) quantum computation. Stabilizer codes, including surface code and color code, have long been th...
SSR: A Swapping-Sweeping-and-Rewriting Optimizer for Quantum Circuit Transformation
Yunqi Huang, Xiang-Yu Zhou, Fanxu Meng +3 more·Mar 5, 2025
Quantum circuit transformation (QCT), necessary for adapting any quantum circuit to the qubit connectivity constraints of the NISQ device, often introduces numerous additional SWAP gates into the original circuit, increasing the circuit depth and thu...
Acoustic phonon phase gates with number-resolving phonon detection
Hong Qiao, Zhaoyou Wang, Gustav Andersson +9 more·Mar 5, 2025
Approaches to quantum computing that use itinerant photons are appealing because they have relatively few physical requirements. However, at present, many elements of photonic quantum computers are nondeterministic, presenting a challenge for large-s...
Schematic Representation Method for Quantum Circuits: An Intuitive Approach to Quantum Gate Effects
Serkan Akkoyun·Mar 4, 2025
In quantum circuits, qubits and the quantum gates acting on them have traditionally been analysed using matrix algebra and Dirac notation. While powerful, these can be unintuitive for conceptual understanding and rapid problem solving. In this work, ...
Negative exchange interaction in Si quantum dot arrays via valley-phase induced $\mathbb{Z}_2$ gauge field
Benjamin D. Woods·Mar 3, 2025
The exchange interaction $J$ offers a powerful tool for quantum computation based on semiconductor spin qubits. However, the exchange interaction in two-electron systems in the absence of a magnetic field is usually constrained to be non-negative $J ...
On Exact Sizes of Minimal CNOT Circuits
Jens Christensen, Søren Fuglede Jørgensen, Andreas Pavlogiannis +1 more·Mar 3, 2025
Computing a minimum-size circuit that implements a certain function is a standard optimization task. We consider circuits of CNOT gates, which are fundamental binary gates in reversible and quantum computing. Algebraically, CNOT circuits on $n$ qubit...
Locating Rydberg Decay Error in SWAP-LRU
Cheng-Cheng Yu, Yu-Hao Deng, Ming-Cheng Chen +2 more·Mar 3, 2025
Achieving fault-tolerant quantum computing with neutral atoms necessitates addressing inherent errors, particularly leakage from Rydberg states during the implementation of multi-qubit gates. Such leakage induces two-qubit error chains, which degrade...
Qubit Movement-Optimized Program Generation on Zoned Neutral Atom Processors
Enhyeok Jang, Youngmin Kim, Hyungseok Kim +3 more·Mar 1, 2025
A zoned neutral atom architecture achieves exceptional fidelity by segregating the execution spaces of 1- and 2-qubit gates, being a promising candidate for high-accuracy quantum systems. Unfortunately, na'ively applying programs designed for static ...