Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,526 papers in 12 months (-19% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Advancements in Superconducting Microwave Cavities and Qubits for Quantum Information Systems
A. Krasnok, P. Dhakal, A. Fedorov +3 more·Apr 18, 2023
Superconducting microwave cavities with ultra-high Q-factors are revolutionizing the field of quantum computing, offering long coherence times exceeding 1 ms, which is critical for realizing scalable multi-qubit quantum systems with low error rates. ...
Leakage Benchmarking for Universal Gate Sets
Bujiao Wu, Xiaoyang Wang, Xiao Yuan +2 more·Apr 16, 2023
Errors are common issues in quantum computing platforms, among which leakage is one of the most-challenging to address. This is because leakage, i.e., the loss of information stored in the computational subspace to undesired subspaces in a larger Hil...
Frequency-tunable microwave quantum light source based on superconducting quantum circuits
Yan Li, Zhiling Wang, Zenghui Bao +7 more·Apr 12, 2023
A nonclassical light source is essential for implementing a wide range of quantum information processing protocols, including quantum computing, networking, communication, and metrology. In the microwave regime, propagating photonic qubits that trans...
Static Entanglement Analysis of Quantum Programs
Shangzhou Xia, Jianjun Zhao·Apr 11, 2023
Quantum entanglement plays a crucial role in quantum computing. Entangling information has important implications for understanding the behavior of quantum programs and avoiding entanglement-induced errors. Entanglement analysis is a static code anal...
High-fidelity parallel entangling gates on a neutral-atom quantum computer
S. Evered, D. Bluvstein, M. Kalinowski +12 more·Apr 11, 2023
The ability to perform entangling quantum operations with low error rates in a scalable fashion is a central element of useful quantum information processing^ 1 . Neutral-atom arrays have recently emerged as a promising quantum computing platform, fe...
High-fidelity two-qubit gates of hybrid superconducting-semiconducting singlet-triplet qubits
Maria Spethmann, S. Bosco, A. Hofmann +2 more·Apr 11, 2023
Hybrid systems comprising superconducting and semiconducting materials are promising architectures for quantum computing. Superconductors induce long-range interactions between the spin degrees of freedom of semiconducting quantum dots. These interac...
Fourier expansion in variational quantum algorithms
Nikita A. Nemkov, E. Kiktenko, A. Fedorov·Apr 7, 2023
The Fourier expansion of the loss function in variational quantum algorithms (VQA) contains a wealth of information, yet is generally hard to access. We focus on the class of variational circuits, where constant gates are Clifford gates and parameter...
On-Chip Generation and Collectively Coherent Control of the Superposition of the Whole Family of Dicke States.
Leizhen Chen, Liangliang Lu, Lijun Xia +3 more·Apr 7, 2023
Integrated quantum photonics has recently emerged as a powerful platform for generating, manipulating, and detecting entangled photons. Multipartite entangled states lie at the heart of the quantum physics and are the key enabling resources for scala...
Electro-optically programmable photonic circuits enabled by wafer-scale integration on thin-film lithium niobate
Yong Zheng, Haozong Zhong, Haisu Zhang +10 more·Apr 7, 2023
Programmable photonic circuits performing universal linear-optical transformations underpin vital functions in photonic quantum information processing, quantum-enhanced sensor networks, machine learning and many other intriguing applications. Recent ...
Exploration of Quantum Computer Power Side-Channels
Chuan Xu, Ferhat Erata, Jakub Szefer·Apr 6, 2023
With the rapidly growing interest in quantum computing also grows the importance of securing these quantum computers from various physical attacks. Constantly increasing qubit counts and improvements to the fidelity of the quantum computers hold grea...
Protecting information via probabilistic cellular automata.
A. Ray, R. Laflamme, Aleksander Kubica·Apr 6, 2023
Probabilistic cellular automata describe the dynamics of classical spin models, which, for sufficiently small temperature T, can serve as classical memory capable of storing information even in the presence of nonzero external magnetic field h. In th...
Parallel circuit implementation of variational quantum algorithms
Michele Cattelan, S. Yarkoni, Wolfgang Lechner·Apr 6, 2023
We present a framework to split quantum circuits of variational quantum algorithms (VQAs) to allow for parallel training and execution to solve problems larger than the number of available qubits in a quantum device. We apply this method to combinato...
Performance Bounds for Quantum Feedback Control
Flemming Holtorf, F. Schäfer, Julian Arnold +2 more·Apr 6, 2023
The limits of quantum feedback control have immediate consequences for quantum information science at large, yet remain largely unexplored. Here, we combine quantum filtering theory and moment-sum-of-squares techniques to construct a hierarchy of con...
Low-dissipation data bus via coherent quantum dynamics
Dylan Lewis, João P. Moutinho, A. Costa +2 more·Apr 5, 2023
The transfer of information between two physical locations is an essential component of both classical and quantum computing. In quantum computing the transfer of information must be coherent to preserve quantum states and hence the quantum informati...
Entanglement Distillation Based on Polarization and Frequency Hyperentanglement
Dan Xu, Changjia Chen, B. Kirby +1 more·Apr 4, 2023
Entanglement distillation has many applications in quantum information processing and is an important tool for improving the quality and efficiency of quantum communication, cryptography, computing, and simulation. We propose an entanglement distilla...
Optimizing resetting of superconducting qubits
C. M. Diniz, R. J. de Assis, N. G. de Almeida +1 more·Apr 3, 2023
Many quantum algorithms demand a large number of repetitions to obtain reliable statistical results. Thus, at each repetition it is necessary to reset the qubits efficiently and precisely in the shortest possible time, so that quantum computers actua...
Thin film aluminum nitride surface acoustic wave resonators for quantum acoustodynamics
Wenhui Jiang, Junfeng Chen, Xiaoyu Liu +5 more·Apr 2, 2023
Quantum excitations of macroscopic surface acoustic waves (SAWs) have been tailored to control, communicate, and transduce stationary and flying quantum states. However, the limited lifetime of these hybrid quantum systems remains critical obstacles ...
Multiple silicon dangling-bond charge qubits for quantum computing: a Hilbert-space analysis of the Hamiltonian
Zahra Shaterzadeh-Yazdi, Payman Kazemikhah·Apr 1, 2023
Silicon-based dangling-bond charge qubit is one of the auspicious models for universal fault-tolerant solid-state quantum computing. In universal quantum computing, it is crucial to evaluate and characterize the computational Hilbert space and reduce...
Break-even point of the phase-flip error correcting code
Áron Rozgonyi, Gábor Széchenyi·Mar 31, 2023
In this theoretical study, we explore the use of quantum code-based memories to enhance the lifetime of qubits and exceed the break-even point, which is critical for the implementation of fault-tolerant quantum computing. Specifically, we investigate...
Non-classical microwave–optical photon pair generation with a chip-scale transducer
S. Meesala, Steven Wood, D. Lake +6 more·Mar 30, 2023
A transducer that generates microwave–optical photon pairs is demonstrated. This could provide an interface between optical communication networks and superconducting quantum devices that operate at microwave frequencies. Modern computing and communi...