Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
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...
Deterministic generation of multiqubit entangled states among distant parties using indefinite causal order
Wen‐Qiang Liu, Hai‐Rui Wei·Mar 5, 2025
Quantum entanglement plays an irreplaceable role in various remote quantum information processing tasks. Here we present protocols for generating deterministic and heralded $N$-qubit entangled states across multiple network nodes. By utilizing a pre-...
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...
Bounding the computational power of bosonic systems
Varun Upreti, Ulysse Chabaud·Mar 5, 2025
Bosonic quantum systems operate in an infinite-dimensional Hilbert space, unlike discrete-variable quantum systems. This distinct mathematical structure leads to fundamental differences in quantum information processing, such as an exponentially grea...
Train on classical, deploy on quantum: scaling generative quantum machine learning to a thousand qubits
Erik Recio-Armengol, Shahnawaz Ahmed, Joseph Bowles·Mar 4, 2025
We propose an approach to generative quantum machine learning that overcomes the fundamental scaling issues of variational quantum circuits. The core idea is to use a class of generative models based on instantaneous quantum polynomial circuits, whic...
Generation of polarization-entangled photon pairs from two interacting quantum emitters
Adrián Juan-Delgado, Geza Giedke, Javier Aizpurua +1 more·Mar 4, 2025
Entangled photon pairs are key elements in quantum communication and quantum cryptography. State-of-the-art sources of entangled photons are mainly based on parametric down-conversion from nonlinear crystals, which is probabilistic in nature, and on ...
Practical Unclonable Encryption with Continuous Variables
Arpan Akash Ray, Boris Škorić·Mar 4, 2025
We propose the first continuous-variable (CV) unclonable encryption scheme, extending the paradigm of quantum encryption of classical messages (QECM) to CV systems. In our construction, a classical message is first encrypted classically and then enco...
Spike-based alignment learning solves the weight transport problem
Timo Gierlich, Andreas Baumbach, Akos F. Kungl +2 more·Mar 4, 2025
In both machine learning and in computational neuroscience, plasticity in functional neural networks is frequently expressed as gradient descent on a cost. Often, this imposes symmetry constraints that are difficult to reconcile with local computatio...
Quantum state exclusion for group-generated ensembles of pure states
Arnau Diebra, Santiago Llorens, Emili Bagan +2 more·Mar 4, 2025
Quantum state exclusion is the task of determining which states from a given set a system was not prepared in. We provide a complete solution to optimal quantum state exclusion for arbitrary sets of pure states generated by finite groups, establishin...
A PennyLane-Centric Dataset to Enhance LLM-based Quantum Code Generation using RAG
Abdul Basit, Nouhaila Innan, Muhammad Haider Asif +4 more·Mar 4, 2025
Large Language Models (LLMs) offer powerful capabilities in code generation, natural language understanding, and domain-specific reasoning. Their application to quantum software development remains limited, in part because of the lack of high-quality...
Measurement-Induced Crossover of Quantum Jump Statistics in Postselection-Free Many-Body Dynamics
Kazuki Yamamoto, Ryusuke Hamazaki·Mar 4, 2025
We reveal a nontrivial crossover of subsystem fluctuations of quantum jumps in continuously monitored many-body systems, which have a trivial maximally mixed state as a steady-state density matrix. While the fluctuations exhibit the standard volume l...
Quantum Non-Linear Bandit Optimization
Zakaria Shams Siam, Chaowen Guan, Chong Liu·Mar 4, 2025
We study non-linear bandit optimization where the learner maximizes a black-box function with zeroth order function oracle, which has been successfully applied in many critical applications such as drug discovery and materials design. Existing works ...
Quantum Resource Estimates for Computing Binary Elliptic Curve Discrete Logarithms
Michael Garn, A. Kan·Mar 4, 2025
We perform logical and physical resource estimation for computing binary elliptic curve discrete logarithms using Shor's algorithm on fault-tolerant quantum computers. We adopt a windowed approach to design our circuit implementation of the algorithm...
QCLAB: A Matlab Toolbox for Quantum Computing
Sophia Keip, Daan Camps, R. Beeumen·Mar 4, 2025
We introduce QCLAB, an object-oriented MATLAB toolbox for constructing, representing, and simulating quantum circuits. Designed with an emphasis on numerical stability, efficiency, and performance, QCLAB provides a reliable platform for prototyping a...
CQ CNN: A Hybrid Classical Quantum Convolutional Neural Network for Alzheimer's Disease Detection Using Diffusion Generated and U Net Segmented 3D MRI
Mominul Islam, Mohammad Junayed Hasan, M.R.C. Mahdy·Mar 4, 2025
The detection of Alzheimer disease (AD) from clinical MRI data is an active area of research in medical imaging. Recent advances in quantum computing, particularly the integration of parameterized quantum circuits (PQCs) with classical machine learni...
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, ...
Efficient Quantum Chemistry Calculations on Noisy Quantum Hardware
Nora M. Bauer, Kubra Yeter-Aydeniz, G. Siopsis·Mar 4, 2025
A hardware‐efficient optimization scheme is presented for quantum chemistry calculations, utilizing the Sampled Quantum Diagonalization (SQD) method. This algorithm, optimized SQD (SQDOpt), combines the classical Davidson method technique with added ...
Long distance local local oscillator continuous variable quantum key distribution with digital signal processing
Dengke Qi, Xiangyu Wang, Jiayu Ma +4 more·Mar 4, 2025
Quantum key distribution relying on the principles of quantum mechanics enables two parties to produce a shared random secret key, thereby ensuring the security of data transmission. Continuous variable quantum key distribution (CV-QKD) is widely app...
rf-SQUID-based traveling-wave parametric amplifier with -84 dBm input saturation power across more than one octave bandwidth
Victor Gaydamachenko, Christoph Kissling, L. Grunhaupt·Mar 4, 2025
Traveling-wave parametric amplifiers (TWPAs) have become an essential tool for the readout of quantum circuits and the search for dark matter. We report on the implementation of an rf-SQUID-based Josephson TWPA with an average saturation power of -84...
Extensions from within
Shadi Ali Ahmad, M. Klinger·Mar 4, 2025
Inclusions and extensions lie at the heart of physics and mathematics. The most relevant kind of inclusion in quantum systems is that of a von Neumann subalgebra, which is the focus of this work. We propose an object intrinsic to a given algebra that...