Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,386 papers in 12 months (-22% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Tight Success Probabilities for Quantum Period Finding and Phase Estimation
Malik Magdon-Ismail, Khai Dong·Jun 25, 2025
Period finding and phase estimation are fundamental in quantum computing. Prior work has established lower bounds on their success probabilities. Such quantum algorithms measure a state $|\hat\ell\rangle$ in an $n$-qubit computational basis, $\hat\el...
An adversary bound for quantum signal processing
Lorenzo Laneve·Jun 25, 2025
Quantum signal processing (QSP) and quantum singular value transformation (QSVT), have emerged as unifying frameworks in the context of quantum algorithm design. These techniques allow to carry out efficient polynomial transformations of matrices blo...
Robust Tripartite Entanglement Generation via Correlated Noise in Spin Qubits
Sander Driessen, Ji Zou, Even Thingstad +2 more·Jun 25, 2025
We investigate the generation of genuine tripartite entanglement in a triangular spin-qubit system due to spatially correlated noise. In particular, we demonstrate how the formation of a highly entangled dark state -- a W state -- enables robust, lon...
Thermodynamic criteria for signaling in quantum channels
Yutong Luo, Simon Milz, Felix C. Binder·Jun 25, 2025
Signaling quantum channels are fundamental to quantum communication, enabling the transfer of information from input to output states. In contrast, thermalisation erases information about the initial state. This raises a crucial question: How does th...
Practical insights on the effect of different encodings, ansätze and measurements in quantum and hybrid convolutional neural networks
Jesús Lozano-Cruz, Albert Nieto-Morales, Oriol Balló-Gimbernat +3 more·Jun 25, 2025
This study investigates the design choices of parameterized quantum circuits (PQCs) within quantum and hybrid convolutional neural network (HQNN and QCNN) architectures, applied to the task of satellite image classification using the EuroSAT dataset....
Predictive tracking of the NV Center based on external temperature sensors
Manpreet Singh Jattana, Thomas Lippert·Jun 25, 2025
We report an experimental design where the position and resonance frequency of the Nitrogen Vacancy (NV) in a diamond are correlated with the room temperature. A simple model trained on the interpolated correlation data predicts both quantities. The ...
Trion quantum coherence in site-controlled pyramidal InGaAs quantum dots
R. A. Barcan, I. Samaras, K. Barr +3 more·Jun 25, 2025
Deterministically positioned pyramidal InGaAs quantum dots (QDs) exhibit exceptional quantum properties, making them highly promising candidates for scalable on-chip quantum information processing. In this work, we investigate the coherent dynamics o...
A Cost-Effective Layout-Aware Quantum Circuit Synthesis For Triangular, Square, and Heavy-Hex Layouts
Sonia Yang, Ali Al-Bayaty, Marek Perkowski·Jun 25, 2025
The quantum layout and the mapping of logical to physical qubits are crucial in quantum circuit synthesis for a real quantum computer. Circuits that include large $n$-bit Toffoli gates ($n \geq 3$), such as those designed from cost-expensive gates an...
Efficient Inversion of Unknown Unitary Operations with Structured Hamiltonians
Yin Mo, Tengxiang Lin, Xin Wang·Jun 25, 2025
Unknown unitary inversion is a fundamental primitive in quantum computing and physics. Although recent work has demonstrated that quantum algorithms can invert arbitrary unknown unitaries without accessing their classical descriptions, improving the ...
Sequential Quantum Computing
Sebastián V. Romero, Alejandro Gomez Cadavid, E. Solano +1 more·Jun 25, 2025
We propose and experimentally demonstrate sequential quantum computing (SQC), a paradigm that utilizes multiple homogeneous or heterogeneous quantum processors in hybrid classical-quantum workflows. In this manner, we are able to overcome the limitat...
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...
A Framework for Quantum Advantage
Olivia Lanes, Mourad Beji, A. Córcoles +12 more·Jun 25, 2025
As quantum computing approaches the threshold where certain tasks demonstrably outpace their classical machines, the need for a precise, clear, consensus-driven definition of quantum advantage becomes essential. Rapid progress in the field has blurre...
Cutoff Theorems for the Equivalence of Parameterized Quantum Circuits
Neil J. Ross, Scott Wesley·Jun 25, 2025
Many promising quantum algorithms in economics, medical science, and material science rely on circuits that are parameterized by a large number of angles. To ensure that these algorithms are efficient, these parameterized circuits must be heavily opt...
Variational simulation of quantum phase transitions induced by boundary fields
Alan C. Duriez, A. Saguia, M. S. Sarandy·Jun 25, 2025
The characterization of quantum phase transitions is a fundamental task for the understanding of quantum phases of matter, with a number of potential applications in quantum technologies. In this work, we use digital quantum simulation as a resource ...
Quantum framework for simulating linear PDEs with Robin boundary conditions
N. Guseynov, Xiajie Huang, Nana Liu·Jun 25, 2025
We propose an explicit quantum framework for numerically simulating general linear partial differential equations (PDEs), extending previous work (Guseynov et al 2025 Phys. Rev. Res. 7 033100) to incorporate (a) Robin boundary conditions—which includ...
Speeding up thermalization and quantum state preparation through engineered quantum collisions
S. Sgroi, Salvatore Lorenzo, Luca Innocenti +3 more·Jun 25, 2025
We realize fast thermalization and state preparation of a single mode cavity field using a collision model-like approach, where a sequence of qubits or three level system ancillae, sequentially interacting with the field, is engineered with a genetic...
Robust Feedback-Based Quantum Optimization: Analysis of Coherent Control Errors
Mirko Legnini, Julian Berberich·Jun 25, 2025
The Feedback-based Algorithm for Quantum Optimization (FALQON) is a Lyapunov inspired quantum algorithm proposed to tackle combinatorial optimization problems. In this paper, we examine the robustness of FALQON against coherent control errors, a clas...
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...
Realization of a quantum error detection code with a dynamically reassigned ancillary qubit
A. S. Kazmina, A. M. Polyanskiy, Elena Yu. Egorova +5 more·Jun 25, 2025
Quantum error correction (QEC) is essential for achieving fault-tolerant quantum computing. While superconducting qubits are among the most promising candidates for scalable QEC, their limited nearest-neighbor connectivity presents significant challe...
A fault-tolerant neutral-atom architecture for universal quantum computation
D. Bluvstein, A. Geim, Sophie Li +21 more·Jun 25, 2025
Quantum error correction (QEC)1,2 is essential for the realization of large-scale quantum computers3,4. However, owing to the complexity of operating on the encoded ‘logical’ qubits5,6, understanding the physical principles for building fault-toleran...