Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Thermal operations from informational equilibrium
Seok Hyung Lie, Jeongrak Son, P. Boes +2 more·Jul 22, 2025
Thermal operations are quantum channels that have taken a prominent role in deriving fundamental thermodynamic limitations in quantum systems. We show that these channels are uniquely characterized by a purely quantum information theoretic property: ...
Computational Performance Bounds Prediction in Quantum Computing With Unstable Noise
Jinyang Li, Samudra Dasgupta, Yuhong Song +3 more·Jul 22, 2025
Quantum computing has significantly advanced in recent years, boasting devices with hundreds of quantum bits (qubits), hinting at its potential quantum advantage over classical computing. Yet, noise in quantum devices poses significant barriers to re...
Reconfigurable qubit states and quantum trajectories in a synthetic artificial neuron network with a process to direct information generation from co-integrated burst-mode spiking under non-Markovianity
Osama M. Nayfeh, C. Horne·Jul 22, 2025
The research and development of hardware neuron technologies are accelerating at a very fast pace to provide for increased efficiency in performing artificial intelligence and autonomy functions beyond that possible with emulation on digital computer...
Efficient quantum state tomography with auxiliary systems
Wenlong Zhao, Da Zhang, Huili Zhang +2 more·Jul 22, 2025
Quantum state tomography is a technique in quantum information science used to reconstruct the density matrix of an unknown quantum state, providing complete information about the quantum state. It is of significant importance in fields such as quant...
A critical appraisal of tests of locality and of entanglement versus non-entanglement at colliders
Philip Bechtle, Cedric Breuning, Herbi K. Dreiner +1 more·Jul 21, 2025
It has been argued more than 30 years ago that it is not possible to test locality at colliders, due to the inability to directly measure non-commutating observables such as spin components in current collider experiments. Recently, there has been a ...
Quantum logic operations and algorithms in a single 25-level atomic qudit
Pei Jiang Low, N. Zutt, Gaurav A. Tathed +1 more·Jul 21, 2025
Scaling quantum computers remains a substantial scientific and technological challenge. Leveraging the full range of intrinsic degrees of freedom in quantum systems offers a promising route towards enhanced algorithmic performance and hardware effici...
Time Entangled Quantum Blockchain with Phase Encoding for Classical Data
Ruwanga Konara, Kasun De Zoysa, Anuradha Mahasinghe +2 more·Jul 20, 2025
With rapid advancements in quantum computing, it is widely believed that there will be quantum hardware capable of compromising classical cryptography and hence, the internet and the current information security infrastructure in the coming decade. T...
Multipartite entanglement from ditstrings for 1+1D systems
Zane Ozzello, Yannick Meurice·Jul 19, 2025
We show that multipartite entanglement can be used as an efficient way of identifying the critical points of 1+1D systems. We demonstrate this with the quantum Ising model, lattice $λφ^4$ approximated with qutrits, and arrays of Rydberg atoms. To do ...
Quantum State Preparation Based on LimTDD
Xin Hong, Chenjian Li, Aochu Dai +3 more·Jul 19, 2025
Quantum state preparation is a fundamental task in quantum computing and quantum information processing. With the rapid advancement of quantum technologies, efficient quantum state preparation has become increasingly important. This paper proposes a ...
Diagnosing Device Performance in Rydberg-Ladder Gauge Simulators with Cumulative Probabilities and Filtered Mutual Information
Avi Kaufman, Muhammad Asaduzzaman, Zane Ozzello +3 more·Jul 18, 2025
We study bitstring measurements from the publicly available Aquila Rydberg-atom platform using a two-leg ladder that encodes a truncated lattice gauge model as a practical benchmark that can be directly implemented and simulated on current hardware. ...
Quantum Internet in a Nutshell -- Advancing Quantum Communication with Ion Traps
J. Hilder, Sascha Heußen, A. Ginter +4 more·Jul 18, 2025
Quantum Internet in a Nutshell (QI-Nutshell) connects the fields of quantum communication and quantum computing by emulating quantum communication protocols on currently available ion-trap quantum computers. We demonstrate emulations of QKD protocols...
Simple ways of preparing qudit Dicke states
Noah B. Kerzner, Federico Galeazzi, Rafael I. Nepomechie·Jul 17, 2025
Dicke states are permutation-invariant superpositions of qubit computational basis states, which play a prominent role in quantum information science. We consider here two higher-dimensional generalizations of these states: $SU(2)$ spin-$s$ Dicke sta...
Topology-enhanced superconducting qubit networks for in-sensor quantum information processing
J. Settino, G. G. Luciano, A. Di Bartolomeo +4 more·Jul 17, 2025
We investigate the influence of topology on the magnetic response of inductively coupled superconducting flux-qubit networks. Using exact diagonalization methods and linear response theory, we compare the magnetic response of linear and cross-shaped ...
Technical Review on RF-Amplifiers for Quantum Computer Circuits: New Architectures of Josephson Parametric Amplifier
Ahmad Salmanogli, Hesam Zandi, Mahdi Esmaeili +2 more·Jul 17, 2025
Josephson Parametric Amplifiers (JPAs) are key components in quantum information processing due to their ability to amplify weak quantum signals with near-quantum-limited noise performance. This is essential for applications such as qubit readout, qu...
Multiqubit monogamy relations beyond shadow inequalities
Eduardo Serrano-Ensástiga, Olivier Giraud, John Martin·Jul 16, 2025
Multipartite quantum systems are subject to monogamy relations that impose fundamental constraints on the distribution of quantum correlations between subsystems. These constraints can be studied quantitatively through sector lengths, defined as the ...
Scalable dissipative quantum error correction for qubit codes
Ivan Rojkov, Elias Zapusek, Florentin Reiter·Jul 16, 2025
Dissipative quantum error correction (QEC) autonomously protects quantum information using engineered dissipation and offers a promising alternative to error correction via measurement and feedback. However, scalability remains a challenge, as correc...
On approximate quantum error correction for symmetric noise
Gereon Koßmann, Julius A. Zeiss, Omar Fawzi +1 more·Jul 16, 2025
We revisit the extendability-based semi-definite programming hierarchy introduced by Berta et al. [Mathematical Programming, 1 - 49 (2021)], which provides converging outer bounds on the optimal fidelity of approximate quantum error correction (AQEC)...
On the Fundamental Resource for Exponential Advantage in Quantum Channel Learning
Minsoo Kim, Changhun Oh·Jul 15, 2025
Quantum resources enable us to achieve an exponential advantage in learning the properties of unknown physical systems by employing quantum memory. While entanglement with quantum memory is recognized as a necessary qualitative resource, its quantita...
Entanglement Classification in the Graph States: The generalization to $n$-Qubits States using the Entanglement Matrix
Sameer Sharma·Jul 15, 2025
Graph states represent a significant class of multi-partite entangled quantum states with applications in quantum error correction, quantum communication, and quantum computation. In this work, we introduce a novel formalism called the Entanglement M...
Understanding Quantum Information and Computation
John Watrous·Jul 15, 2025
This is a course on the theory of quantum computing. It consists of 16 lessons, each with a video and written component, covering the basics of quantum information, quantum algorithms (including query algorithms, Shor's algorithm for integer factoriz...