Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Measurement-free quantum error correction optimized for biased noise
Katharina Brechtelsbauer, Friederike Butt, David F. Locher +4 more·May 21, 2025
In this paper, we derive optimized measurement-free protocols for quantum error correction and the implementation of a universal gate set optimized for an error model that is noise biased . The noise bias is adapted for neutral atom platforms, where ...
Transformer-Based Neural Quantum Digital Twins for Many-Body Quantum Simulation and Optimal Annealing Schedule Design
Jianlong Lu, Hanqiu Peng, Ying Chen·May 21, 2025
We introduce Transformer-based Neural Quantum Digital Twins (Tx-NQDTs) to simulate full adiabatic dynamics of many-body quantum systems, including ground and low-lying excited states, at low computational cost. Tx-NQDTs employ a graph-informed Transf...
A Fully Device-Independent Ternary Quantum Key Distribution Protocol Based on the Impossible Colouring Game
Aniket Basak, Rajeet Ghosh, Rohit Sarma Sarkar +2 more·May 21, 2025
We propose a Ternary Fully Device-Independent Quantum Key Distribution (TFDIQKD) protocol based on the two-party Impossible Colouring pseudo-telepathy game, utilizing maximally entangled qutrit states to enable secure key generation between distant p...
Readout sweet spots for spin qubits with strong spin-orbit interaction
Domonkos Svastits, Bence Het'enyi, G'abor Sz'echenyi +4 more·May 21, 2025
Qubit readout schemes often deviate from ideal projective measurements, introducing critical issues that limit quantum computing performance. In this work, we model charge-sensing-based readout for semiconductor spin qubits in double quantum dots, an...
Noisy simulations of Quantum Walk and Quantum Walk search via Quantum Cellular Automata on a semiconducting spin processor emulator
Andrea Mammola, Quentin Schaeverbeke, Giuseppe Di Molfetta·May 20, 2025
In this work we map NISQ-friendly implementations of the non-interacting QCA to a circuit Quantum Electrodynamics (cQED) hardware. We perform both noiseless and noisy simulations of the QCA one particle sector, namely the Quantum Walk, on $N$-cycles ...
Correlated noise can be beneficial to quantum transducers
Yu-Bo Hou, Xiao Ai, Ruizhe You +1 more·May 20, 2025
Quantum systems are inherently susceptible to noise—a notorious factor that induces decoherence and limits the performance of quantum applications. To mitigate its detrimental effects, various techniques have been developed, including cryogenic cooli...
Performance analysis of GKP error correction
F. K. Marqversen, Janus H. Wesenberg, N. T. Zinner +1 more·May 20, 2025
Quantum error correction is essential for achieving fault-tolerant quantum computing. Gottesman-Kitaev-Preskill (GKP) codes are particularly effective at correcting continuous noise, such as Gaussian noise and loss, and can significantly reduce overh...
Quantum Kinetic Uncertainty Relations in Mesoscopic Conductors at Strong Coupling
Gianmichele Blasi, Ricard Ravell Rodríguez, Mykhailo Moskalets +2 more·May 19, 2025
Kinetic Uncertainty Relations (KURs) set fundamental limits on the precision of nonequilibrium transport by bounding the signal-to-noise ratio of currents in terms of the dynamical activity, a quantity that counts exchange events between a system and...
Advances in Josephson Junction Materials and Processes Toward Practical Quantum Computing
Hyunseong Kim, Gyunghyun Jang, Seungwon Jin +8 more·May 19, 2025
The Josephson junction is the fundamental nonlinear building block of superconducting quantum technologies. Its macroscopic quantum tunneling physics underpins superconducting quantum computing, sensing, and communication, but scaling these platforms...
Improving adiabatic quantum factorization via chopped random-basis optimization
Tian-Le Yang, Mo Xiong, Ming Xue +2 more·May 19, 2025
Integer factorization remains a significant challenge for classical computers and is fundamental to the security of RSA encryption. Adiabatic quantum algorithms present a promising solution, yet their practical implementation is limited by the short ...
Digital Quantum Simulation of Squeezed States via Enhanced Bosonic Encoding and its Demonstration With Superconducting Qubits
Hengyue Li, Yusheng Yang, Zhe-Hui Wang +6 more·May 16, 2025
We present a fully digital approach for simulating single‐mode squeezed states using an enhanced bosonic encoding strategy on a circuit model, and demonstrate it on a superconducting quantum processor through a cloud platform. By mapping up to 2n$2^{...
Forensics of Error Rates of Quantum Hardware
Rupshali Roy, Swaroop Ghosh·May 16, 2025
The qubit technologies, basis gate set, noise behavior, speed and coupling architecture are among the various factors that vary among various backends. Although third-party cloud providers offering quantum hardware as a service offer lower cost and f...
Quantum compressed sensing tomographic reconstruction algorithm
Arim Ryou, Kiwoong Kim, Kyungtaek Jun·May 16, 2025
Computed tomography (CT) is a non-destructive technique for observing internal images and has proven highly valuable in medical diagnostics. Recent advances in quantum computing have begun to influence tomographic reconstruction techniques. The quant...
Geometrically Enhanced Topological Quantum Codes
D. Aasen, Jeongwan Haah, Matthew B. Hastings +1 more·May 15, 2025
We consider geometric methods of ``rotating"the toric code in higher dimensions to reduce the qubit count. These geometric methods can be used to prepare higher dimensional toric code states using single shot techniques, and in turn these may be used...
Distributed Realization of Color Codes for Quantum Error Correction
N. K. Chandra, David Tipper, Reza Nejabati +2 more·May 15, 2025
Color codes are a leading class of topological quantum error-correcting codes with modest error thresholds and structural compatibility with two-dimensional architectures, which make them well-suited for fault-tolerant quantum computing (FTQC). Here,...
High-performance local decoders for defect matching in 1D
Louis Paletta, Anthony Leverrier, M. Mirrahimi +1 more·May 15, 2025
Local decoders, also known as cellular-automaton decoders, offer a promising path toward real-time quantum error correction by replacing centralized classical decoding, with inherent hardware constraints, by a natively parallel and streamlined archit...
From noisy observables to accurate ground state energies: a quantum classical signal subspace approach with denoising
Hardeep Bassi, Yizhi Shen, H. Bhat +1 more·May 15, 2025
We propose a hybrid quantum–classical algorithm for ground state energy estimation that remains robust to highly noisy data and exhibits low sensitivity to hyperparameter tuning. Our approach—Fourier Denoising Observable Dynamic Mode Decomposition (F...
Efficient benchmarking of logical magic state
Su-un Lee, Ming Yuan, Senrui Chen +2 more·May 14, 2025
High-fidelity logical magic states are a critical resource for fault-tolerant quantum computation, enabling non-Clifford logical operations through state injection. However, benchmarking these states presents significant challenges: one must estimate...
TensorRL-QAS: Reinforcement learning with tensor networks for improved quantum architecture search
Akash Kundu, Stefano Mangini·May 14, 2025
Variational quantum algorithms hold the promise to address meaningful quantum problems already on noisy intermediate-scale quantum hardware. In spite of the promise, they face the challenge of designing quantum circuits that both solve the target pro...
Hardware-aware Compilation for Chip-to-Chip Coupler-Connected Modular Quantum Systems
Zefan Du, Shuwen Kan, S. Stein +3 more·May 14, 2025
As quantum processors scale, monolithic architectures face growing challenges due to limited qubit density, heterogeneous error profiles, and restricted connectivity. Modular quantum systems, enabled by chip-to-chip coupler-connected modular architec...