Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Classical interfaces for controlling cryogenic quantum computing technologies
Jack C. Brennan, João Barbosa, Chong Li +8 more·Apr 25, 2025
Quantum processors have the potential to revolutionize computing on a scale unseen since the development of semiconductor technology in the middle of the twentieth century. However, while there is now huge activity and investment in the field, there ...
CHSH Violations Using Dynamic Circuits
Jean-Baptiste Waring, Christophe Pere, Sébastien Le Beux·Apr 25, 2025
Scalable quantum computing relies on high-quality, long-range entanglement, a challenge on noisy, near-term devices. The need for practical insights for near-term algorithm design calls for trade-offs exploration in implementing dynamic circuits on c...
Optical Schr\"odinger cat states generation using cubic phase resource state and beamsplitter
A. V. Baeva, A. S. Losev, I. Sokolov·Apr 25, 2025
Squeezed Schr\"odinger cat states are a valuable resource for quantum error correction and quantum computing. In this paper, we investigate the gate for generating such states in the optical regime. Our scheme is based on the entanglement between an ...
On the Generalization of Kitaev Codes as Generalized Bicycle Codes
Franccois Arnault, Philippe Gaborit, Nicolas Saussay·Apr 25, 2025
Surface codes have historically been the dominant choice for quantum error correction due to their superior error threshold performance. However, recently, a new class of Generalized Bicycle (GB) codes, constructed from binary circulant matrices with...
Preparing Greenberger-Horne-Zeilinger states on ground levels of neutral atoms
Zhu-yao Jin, Jun Jing·Apr 25, 2025
We propose a scalable protocol in the Rydberg atomic system to generate the Greenberger-Horne-Zeilinger (GHZ) states, where the qubits are encoded on the hyperfine ground levels. Our system is featured with off-resonant driving fields rather than str...
Quantum Circuit Design for Decoded Quantum Interferometry
Natchapol Patamawisut, Naphan Benchasattabuse, Michal Hajdušek +1 more·Apr 25, 2025
Decoded Quantum Interferometry (DQI) is a recently proposed quantum algorithm for approximating solutions to combinatorial optimization problems by reducing instances of linear satisfiability to bounded-distance decoding over superpositions of quantu...
Quantum Circuit Learning Using Non-Integrable System Dynamics
R. Sato, Yasuhiro Aota, Takaharu Yoishida +4 more·Apr 25, 2025
Quantum machine learning is an approach that aims to improve the performance of machine learning methods by leveraging the properties of quantum computers. In quantum circuit learning (QCL), a supervised learning method that can be implemented using ...
Realizing supersymmetry in a digitized quantum device
Sutapa Samanta, Jianxin Zhu, Armin Rahmani·Apr 25, 2025
The tricritical Ising model serves as an example of emergent spacetime supersymmetry, which can arise in condensed matter systems. In this work, we present a variational quantum algorithm to create this tricritical state on a digitized quantum comput...
CMOS-compatible processing and room-temperature characterization at the wafer level for scalable quantum computing
S. Lang, T. Mayer, J. Weber +10 more·Apr 25, 2025
We report on an industry-grade CMOS-compatible qubit fabrication approach using a CMOS pilot line, enabling a yield of functional devices reaching 92.8 %, with a resistance spread evaluated across the full wafer 200 mm diameter of 12.4 % and relaxati...
Efficient witnessing and testing of magic in mixed quantum states
Tobias Haug, P. S. Tarabunga·Apr 25, 2025
Nonstabilizerness or `magic' is a crucial resource for quantum computers which can be distilled from noisy quantum states. However, determining the magic of mixed quantum has been a notoriously difficult task. Here, we provide efficient witnesses of ...
Coherent nonlinear optical probe for cavity-dressed vibrational mode mixing: multidimensional double-quantum coherence and photon-echo spectroscopy
Arunangshu Debnath·Apr 24, 2025
Cavity dressing of molecular vibrational dynamics expands the role of characteristic vibrations as spectroscopic markers of underlying ultrafast dynamics. Interacting vibrational modes exhibit a pronounced excited state delocalization due to the inte...
Quantumness can enhance resilience to statistical noise in spin-network quantum reservoir computing
Youssef Kora, Christoph Simon·Apr 24, 2025
Quantum reservoir computing offers a promising approach to the utilization of complex quantum dynamics in machine learning. Statistical noise inevitably arises in real settings of quantum reservoir computing (QRC) due to the practical necessity of ta...
Bootstrapping the $R$-matrix
Zhao Zhang·Apr 24, 2025
A bootstrap program is presented for algebraically solving the $R$-matrix of a generic integrable quantum spin chain from its Hamiltonian. The Yang-Baxter equation contains an infinite number of seemingly independent constraints on the operator value...
Fragmentation, Zero Modes, and Collective Bound States in Constrained Models
Eloi Nicolau, Marko Ljubotina, Maksym Serbyn·Apr 24, 2025
Kinetically constrained models were originally introduced to capture slow relaxation in glassy systems, where dynamics are hindered by local constraints instead of energy barriers. Their quantum counterparts have recently drawn attention for exhibiti...
Quantum simulation of CO$_2$ chemisorption in an amine-functionalized metal-organic framework
Jonathan R. Owens, Marwa H. Farag, Pooja Rao +1 more·Apr 24, 2025
We perform a series of calculations using simulated QPUs, accelerated by the NVIDIA CUDA-Q platform, focusing on a molecular analog of an amine-functionalized metal-organic framework (MOF), a promising class of materials for CO$_2$ capture. The varia...
Classical Estimation of the Free Energy and Quantum Gibbs Sampling from the Markov Entropy Decomposition
Samuel O. Scalet, Angela Capel, Anirban N. Chowdhury +4 more·Apr 24, 2025
We revisit the Markov Entropy Decomposition, a classical convex relaxation algorithm introduced by Poulin and Hastings to approximate the free energy in quantum spin lattices. We identify a sufficient condition for its convergence, namely the decay o...
Enhancing the controllability of quantum systems via a static field
Ruikang Liang, Eugenio Pozzoli, Monika Leibscher +3 more·Apr 24, 2025
We provide a sufficient condition for the controllability of a bilinear closed quantum system steered by a static field and a time-varying field, based on the notion of weakly conically connected spectrum. More precisely, we show that if a controlled...
Quantum-Enhanced Change Detection and Joint Communication-Detection
Zihao Gong, Saikat Guha·Apr 24, 2025
Quick detection of transmittance changes in optical channel is crucial for secure communication. We demonstrate that pre-shared entanglement using two-mode squeezed vacuum states significantly reduces detection latency compared to classical and entan...
Quantum Circuit Construction and Optimization through Hybrid Evolutionary Algorithms
Leo Sünkel, Philipp Altmann, Michael Kölle +3 more·Apr 24, 2025
We apply a hybrid evolutionary algorithm to minimize the depth of circuits in quantum computing. More specifically, we evaluate two different variants of the algorithm. In the first approach, we combine the evolutionary algorithm with an optimization...
Quantum Error Correction with Girth-16 Non-Binary LDPC Codes via Affine Permutation Construction
Kenta Kasai·Apr 24, 2025
We propose a method for constructing quantum error-correcting codes using non-binary low-density parity-check codes whose Tanner graphs have girth 16. While conventional constructions based on circulant permutation matrices are limited to a maximum g...