Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Predicting three-dimensional chaotic systems with four qubit quantum systems
Joel Steinegger, Christoph Räth·Jan 25, 2025
Reservoir computing (RC) is among the most promising approaches for AI-based prediction models of complex systems. It combines superior prediction performance with very low CPU-needs for training. Recent results demonstrated that quantum systems are ...
Quantum Algorithms for Matrix Operations of Row Addition, Row Swapping, Trace Calculation and Transpose
Yu-Hang Liu, Yuan-hong Tao, jing-Run Lan +1 more·Jan 25, 2025
Abstract Quantum algorithms of matrix operations are of great significance in many fields in science and technology. In this paper, by leveraging multi-qubit Toffoli gates and basic single-qubit operations, the quantum algorithms of matrix operations...
Characterization of Nanostructural Imperfections in Superconducting Quantum Circuits
Mohammed Alghadeer, S. Fasciati, Shuxiang Cao +7 more·Jan 25, 2025
Decoherence in superconducting quantum circuits, caused by loss mechanisms like material imperfections and two-level system (TLS) defects, remains a major obstacle to improving the performance of quantum devices. In this work, we present atomic-lev...
Superstate Quantum Mechanics
Mikhail Gennadievich Belov, V. V. Dubov, Vadim Konstantinovich Ivanov +3 more·Jan 25, 2025
We introduce Superstate Quantum Mechanics (SQM), a theory that considers states in Hilbert space subject to multiple quadratic constraints, with ``energy''also expressed as a quadratic function of these states. Traditional quantum mechanics correspon...
A dressed singlet-triplet qubit in germanium
Konstantinos Tsoukalas, Uwe von Lüpke, Alexei Orekhov +15 more·Jan 24, 2025
In semiconductor hole spin qubits, low magnetic field ($B$) operation extends the coherence time ($T_\mathrm{2}^*$) but proportionally reduces the gate speed. In contrast, singlet-triplet (ST) qubits are primarily controlled by the exchange interacti...
Uncertainty relations between quantum Fisher information and entanglement monotones
Shaowei Du, Shuheng Liu, Matteo Fadel +2 more·Jan 24, 2025
Entanglement is widely regarded as an essential resource for a number of tasks and can in some cases be quantified by figures of merit related to those tasks. In quantum metrology, this is showcased by the connections between the quantum Fisher infor...
Quantum Circuit Optimization by Graph Coloring
Hochang Lee, Kyung Chul Jeong, Panjin Kim·Jan 24, 2025
This work shows that minimizing the depth of a quantum circuit composed of commuting operations reduces to a vertex coloring problem on an appropriately constructed graph, where gates correspond to vertices and edges encode non-parallelizability. The...
Single-shot detection limits of quantum illumination with multi-qudit states
Sunghwa Kang, Yonggi Jo, Jihwan Kim +3 more·Jan 24, 2025
Quantum illumination is a protocol for detecting a low-reflectivity target by using two-mode entangled states composed of signal and idler modes, which can outperform unentangled states. We study multi-qudit states for single-shot detection limits of...
Optimized Quantum Circuit Partitioning Across Multiple Quantum Processors
Eneet Kaur, Shahrooz Pouryousef, Hassan Shapourian +4 more·Jan 24, 2025
This article addresses the challenge of scaling quantum computing by employing distributed quantum algorithms across multiple processors. As quantum circuits grow in complexity, efficiently managing the entanglement resources required for communicati...
Tensor-Based Binary Graph Encoding for Variational Quantum Classifiers
Shiwen An, Konstantinos Slavakis·Jan 24, 2025
Quantum computing has been a prominent research area for decades, inspiring transformative fields such as quantum simulation, quantum teleportation, and quantum machine learning (QML), which are undergoing rapid development. Within QML, hybrid classi...
Error-mitigated geometric quantum control over an oscillator
M. Liang, Tao Chen, Zheng-Yuan Xue·Jan 24, 2025
Quantum information is very fragile to environmentally and operationally induced imperfections. Therefore, the construction of practical quantum computers requires quantum error-correction techniques to protect quantum information. In particular, enc...
End-to-End Workflow for Machine-Learning-Based Qubit Readout With QICK and hls4ml
G. D. Guglielmo, Botao Du, Javier Campos +10 more·Jan 24, 2025
In this article, we present an end-to-end workflow for superconducting qubit readout that embeds codesigned neural networks into the quantum instrumentation control kit (QICK). Capitalizing on the custom firmware and software of the QICK platform, wh...
Incremental SAT-Based Enumeration of Solutions to the Yang-Baxter Equation
Daimy Van Caudenberg, Bart Bogaerts, Leandro Vendramin·Jan 24, 2025
We tackle the problem of enumerating set-theoretic solutions to the Yang-Baxter equation. This equation originates from statistical and quantum mechanics, but also has applications in knot theory, cryptography, quantum computation and group theory. N...
Verifying Fault-Tolerance of Quantum Error Correction Codes
Kean Chen, Yuhao Liu, Wang Fang +5 more·Jan 24, 2025
Quantum computers have advanced rapidly in qubit count and gate fidelity. However, large-scale fault-tolerant quantum computing still relies on quantum error correction code (QECC) to suppress noise. Manually or experimentally verifying the fault-tol...
Qubit operations using a modular optical system engineered with PyOpticL: a code-to-CAD optical layout tool
Jacob Myers, Christopher Caron, N. Helaly +5 more·Jan 24, 2025
Complex optical design is hindered by conventional piecewise setup, which prevents modularization and therefore abstraction of subsystems at the circuit level. This limits multiple fields that require complex optics systems, including quantum computi...
Analysis of Heralded Higher-Fidelity Two-Qubit Entangling Gates with Self-Correction
Yuan Sun·Jan 24, 2025
For the quantum error correction and noisy intermediate-scale quantum algorithms to function with high efficiency, the raw fidelity of quantum logic gates on physical qubits needs to satisfy strict requirements. The neutral atom quantum computing equ...
On the Transfer of Knowledge in Quantum Algorithms
Esther Villar-Rodriguez, Eneko Osaba, Izaskun Oregi +2 more·Jan 23, 2025
Quantum computing is poised to transform computational paradigms across science and industry. As the field evolves, it can benefit from established classical methodologies, including promising paradigms such as Transfer of Knowledge (ToK). This work ...
Symmetric tensor scars with tunable entanglement from volume to area law
Bhaskar Mukherjee, Christopher J. Turner, Marcin Szyniszewski +1 more·Jan 23, 2025
Teleportation of quantum information over long distances requires robust entanglement on the macroscopic scale. The construction of highly energetic eigenstates with tunable long-range entanglement can provide a new medium for information transmissio...
Connectivity-aware Synthesis of Quantum Algorithms
Florian Dreier, Christoph Fleckenstein, Gregor Aigner +5 more·Jan 23, 2025
We present a general method for the implementation of quantum algorithms that optimizes both gate count and circuit depth. Our approach introduces connectivity-adapted CNOT-based building blocks called Parity Twine chains. It outperforms all known st...
Measurement of the Casimir force between superconductors
Matthijs H. J. de Jong, Evren Korkmazgil, Louise Banniard +2 more·Jan 23, 2025
The Casimir force follows from quantum fluctuations of the electromagnetic field and yields a nonlinear attractive force between closely spaced conductive objects. Measuring the Casimir force in superconducting materials on either side of the transit...