Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Dual-type dual-element atom arrays for quantum information processing
Zhanchuan Zhang, Jeth Arunseangroj, Wenchao Xu·Mar 21, 2025
Neutral-atom arrays are a leading platform for quantum technologies, offering a promising route toward large-scale, fault-tolerant quantum computing. We propose a novel quantum processing architecture based on dual-type, dual-element atom arrays, whe...
RESFL: An Uncertainty-Aware Framework for Responsible Federated Learning by Balancing Privacy, Fairness and Utility
Dawood Wasif, Terrence J. Moore, Jin-Hee Cho·Mar 20, 2025
Federated Learning (FL) has gained prominence in machine learning applications across critical domains by enabling collaborative model training without centralized data aggregation. However, FL frameworks that protect privacy often sacrifice fairness...
Quantum Characterization, Verification, and Validation
R. Blume-Kohout, Timothy Proctor, Kevin Young·Mar 20, 2025
Quantum characterization, verification, and validation (QCVV) is a set of techniques to probe, describe, and assess the behavior of quantum bits (qubits), quantum information-processing registers, and quantum computers. QCVV protocols probe and descr...
Explaining Robust Quantum Metrology by Counting Codewords
Oskar Novak, Narayanan Rengaswamy·Mar 19, 2025
Quantum sensing holds great promise for high-precision magnetic field measurements. However, its performance is significantly limited by noise. The investigation of active quantum error correction to address this noise led to the Hamiltonian-Not-in-L...
The source of hardware-tailored codes and coding phases
Gaurav Gyawali, Henry Shackleton, Zhu-Xi Luo +1 more·Mar 19, 2025
A central challenge in quantum error correction is identifying powerful quantum codes tailored to specific hardware and determining their error thresholds above which quantum information is unprotected. This problem is hard because we cannot determin...
Two-qubit logic and teleportation with mobile spin qubits in silicon
Y. Matsumoto, M. D. Smet, L. Tryputen +6 more·Mar 19, 2025
The scalability and power of quantum computing architectures depend critically on high-fidelity operations and robust and flexible qubit connectivity. In this respect, mobile qubits are particularly attractive as they enable dynamic and reconfigurabl...
Absolutely Maximal Entanglement in Continuous Variables
James I. Kwon, A. J. Brady, Victor V. Albert·Mar 19, 2025
We explore absolutely maximal entanglement (AME) and k-uniformity in continuous-variable (CV) quantum systems, and show that-unlike in qudit systems-such entanglement is readily realizable in both Gaussian and non-Gaussian quantum states of multiple ...
Scalable low loss cryogenic packaging of quantum memories in CMOS-foundry processed photonic chips
Robert Bernson, Alex Witte, G. Clark +10 more·Mar 18, 2025
Optically linked solid-state quantum memories such as color centers in diamond are a promising platform for distributed quantum information processing and networking. Photonic integrated circuits (PICs) have emerged as a crucial enabling technology f...
Data Encoding for VQC in Qiskit, A Comparison With Novel Hybrid Encoding
Hillol Biswas·Mar 18, 2025
If quantum machine learning emulates the ways of classical machine learning, data encoding in a quantum neural network is imperative for many reasons. One of the key ones is the complexity attributed to the data size depending upon the features and t...
Scalable and fault-tolerant preparation of encoded k -uniform states
Shayan Majidy, Dominik Hangleiter, M. Gullans·Mar 18, 2025
$k$-uniform states are valuable resources in quantum information, enabling tasks such as teleportation, error correction, and accelerated quantum simulations. The practical realization of $k$-uniform states, at scale, faces major obstacles: verifying...
Decoherence from quantum spacetime noise: An open-systems framework with application to neutrino oscillations
Partha Nandi, Tiasha Bhattacharyya, A. S. Majumdar +2 more·Mar 17, 2025
We present a general open-quantum-systems framework to model decoherence induced by stochastic Planck-scale fluctuations of spacetime, focusing on the kappa-Minkowski noncommutative geometry as a representative quantum-gravity scenario. Treating the ...
Low-Overhead Tailoring and Learning of Noise in Graph States
Guedong Park, Jinzhao Sun, Hyunseok Jeong·Mar 17, 2025
Graph and hypergraph states are important resource states for realizing universal quantum computation and diverse non-local physical phenomena. However, noise learning in such states is challenging due to their large entanglement and magic. This work...
Non-asymptotic quantum communication on lossy transmission lines with memory
Francesco Anna Mele, G. Barbarino, Vittorio Giovannetti +1 more·Mar 17, 2025
Non-asymptotic quantum Shannon theory analyses how to transmit quantum information across a quantum channel as efficiently as possible within a specified error tolerance, given access to a finite, fixed, number of channel uses. In a recent work, we d...
Realization of fermionic Laughlin state on a quantum processor
L. Shen, Mao Lin, Cedric Yen-Yu Lin +2 more·Mar 17, 2025
Strongly correlated topological phases of matter are central to modern condensed matter physics and quantum information technology but often challenging to probe and control in material systems. The experimental difficulty of accessing these phases h...
Strongly anharmonic flux-tunable transmon based on InAs-Al 2D heterostructure
Shukai Liu, Arunav Bordoloi, Jacob Issokson +4 more·Mar 15, 2025
The gatemon qubits, made of transparent superconducting-semiconducting Josephson junctions, typically have even weaker anharmonicity than the opaque AlOx-junction transmons. However, flux-frustrated gatemons can acquire a much stronger anharmonicity,...
Generalized Knill–Laflamme theorem for families of isoclinic subspaces
D. Kribs, Rajesh Pereira, Mukesh Taank·Mar 15, 2025
Abstract Isoclinic subspaces have been studied for over a century. Quantum error correcting codes were recently shown to define a subclass of families of isoclinic subspaces. The Knill–Laflamme theorem is a seminal result in the theory of quantum err...
Designing quantum error correction codes for practical spin qudit systems
Sumin Lim, A. Ardavan·Mar 15, 2025
The implementation of practical error correction protocols is essential for deployment of quantum information technologies. Ways of exploiting high-spin nuclei, which have multi-level quantum resources, have attracted interest in this context because...
Near-Term Fermionic Simulation with Subspace Noise Tailored Quantum Error Mitigation
Miha Papič, Manuel G. Algaba, Emiliano Godinez-Ramirez +4 more·Mar 14, 2025
Quantum error mitigation (QEM) has emerged as a powerful tool for the extraction of useful quantum information from quantum devices. Here, we introduce the Subspace Noise Tailoring (SNT) algorithm, which efficiently combines the cheap cost of Symmetr...
The waves-in-space Purcell effect for superconducting qubits
Param Patel, Mingkang Xia, Chao Zhou +5 more·Mar 14, 2025
Quantum information processing, especially with quantum error correction, requires both long-lived qubits and fast, quantum non-demolition readout. In superconducting circuits this leads to the requirement to both strongly couple qubits, such as tran...
Chiral cat code: Enhanced error correction induced by higher-order nonlinearities
Adrià Labay-Mora, Alberto Mercurio, Vincenzo Savona +2 more·Mar 14, 2025
We introduce a Schr\"odinger chiral cat qubit, a novel bosonic quantum code generalizing Kerr cat qubits that exploits higher-order nonlinearities. Compared to a standard Kerr cat, the chiral cat qubit allows additional correction of bit-flip errors ...