Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Pattern-based quantum functional testing
Erik Weiss, Marcel Cech, Stanislaw Soltan +4 more·May 31, 2024
With the growing number of qubits of quantum information processing devices, the task of fully characterizing these processors becomes increasingly unfeasible. From a practical perspective, one wants to find possible errors in the functioning of the ...
On Low-Rank Multiplicity-Free Fusion Categories
Gert Vercleyen·May 30, 2024
This thesis explains the methods and algorithms we used to obtain explicit F symbols, R symbols, and pivotal coefficients of all multiplicity-free pivotal fusion categories up to rank 7. The thesis starts by introducing the concept of a unitary modul...
Quantum visual feature encoding revisited
Xuan-Bac Nguyen, Hoang-Quan Nguyen, Hugh Churchill +2 more·May 30, 2024
Although quantum machine learning has been introduced for a while, its applications in computer vision are still limited. This paper, therefore, revisits the quantum visual encoding strategies, the initial step in quantum machine learning. Investigat...
Efficient Optimal Control of Open Quantum Systems
Wenhao He, Tongyang Li, Xiantao Li +3 more·May 29, 2024
The optimal control problem for open quantum systems can be formulated as a time-dependent Lindbladian that is parameterized by a number of time-dependent control variables. Given an observable and an initial state, the goal is to tune the control va...
Global optimization in variational quantum algorithms via dynamic tunneling method
Seung Park, Kyunghyun Baek, Seungjin Lee +1 more·May 29, 2024
We present a global optimization routine for the variational quantum algorithms, which utilizes the dynamic tunneling flow. Originally designed to leverage information gathered by a gradient-based optimizer around local minima, we adapt the conventio...
Simon algorithm in measurement-based quantum computing
Maximilian Schwetz, Reinhard M. Noack·May 28, 2024
Simon's hidden subgroup algorithm was the first quantum algorithm to prove the superiority of quantum computing over classical computing in terms of complexity. Measurement-based quantum computing (MBQC) is a formulation of quantum computing that, wh...
Strategic Code: A Unified Spatio-Temporal Framework for Quantum Error-Correction
Andrew Tanggara, Mile Gu, Kishor Bharti·May 27, 2024
Quantum error-correcting code (QECC) is the central ingredient in fault-tolerant quantum information processing. An emerging paradigm of dynamical QECC shows that one can robustly encode logical quantum information both temporally and spatially in a ...
Quantum entanglement of multiple excitons in strained graphene
Gabriel P. Martins, Oleg L. Berman, G. Gumbs +1 more·May 25, 2024
We studied the effects arising from a coherent source of photons on the entanglement between excitons in a strained graphene monolayer. The graphene layer was considered to be embedded in an imperfect optical microcavity. In our investigation, we hav...
Hybrid Quantum Downsampling Networks
Yifeng Peng, Xinyi Li, Zhiding Liang +1 more·May 25, 2024
Classical max pooling plays a crucial role in reducing data dimensionality among various well-known deep learning models, yet it often leads to the loss of vital information. We proposed a novel hybrid quantum downsampling module (HQD), which is a no...
Dynamic Inhomogeneous Quantum Resource Scheduling with Reinforcement Learning
Linsen Li, Pratyush Anand, Kaiming He +1 more·May 25, 2024
A central challenge in quantum information science and technology is achieving real-time estimation and feedforward control of quantum systems. This challenge is compounded by the inherent inhomogeneity of quantum resources, such as qubit properties ...
Efficient Quantum Circuit Encoding of Object Information in 2D Ray Casting
Seungjae Lee, Suhui Jeong, Jiwon Seo·May 25, 2024
Quantum computing holds the potential to solve problems that are practically unsolvable by classical computers due to its ability to significantly reduce time complexity. We aim to harness this potential to enhance ray casting, a pivotal technique in...
Schrödinger cat states of a nuclear spin qudit in silicon
Xi Yu, Benjamin Wilhelm, Danielle Holmes +16 more·May 24, 2024
High-dimensional quantum systems are a valuable resource for quantum information processing. They can be used to encode error-correctable logical qubits, which has been demonstrated using continuous-variable states in microwave cavities or the motion...
eQMARL: Entangled Quantum Multi-Agent Reinforcement Learning for Distributed Cooperation over Quantum Channels
Alexander C. DeRieux, Walid Saad·May 24, 2024
Collaboration is a key challenge in distributed multi-agent reinforcement learning (MARL) environments. Learning frameworks for these decentralized systems must weigh the benefits of explicit player coordination against the communication overhead and...
Synthetic High Angular Momentum Spin Dynamics in a Microwave Oscillator
Saswata Roy, Alen Senanian, Christopher S. Wang +10 more·May 24, 2024
Spins and oscillators are foundational to much of physics and applied sciences. For quantum information, a spin 1/2 exemplifies the most basic unit, a qubit. High angular momentum spins (HAMSs) and harmonic oscillators provide multilevel manifolds wh...
The formation of entangled Schrödinger cat-like states in the process of spontaneous parametric down-conversion
Ranjit Singh, Alexander E. Teretenkov·May 23, 2024
We investigate entangled Schrödinger cat-like states (SCLSs) in degenerate and non-degenerate spontaneous parametric down-conversion (SPDC) with a fully quantized, depleted pump. Our fully quantum treatment, visualized via Wigner functions, reveals n...
Bayesian optimisation with improved information sharing for the variational quantum eigensolver
Milena Rohrs, A. Bochkarev, A. C. M. F. Itwm +1 more·May 23, 2024
This work presents a detailed empirical analysis of Bayesian optimisation with information sharing (BOIS) for the variational quantum eigensolver (VQE). The method is applied to computing the potential energy surfaces (PES) of the hydrogen and water ...
Programmable quantum circuits in a large-scale photonic waveguide array
Yang Yang, R. Chapman, Akram Youssry +4 more·May 22, 2024
Over the past decade, integrated quantum photonic technologies have shown great potential as a platform for studying quantum phenomena and realizing large-scale quantum information processing. Recently, there have been proposals for utilizing wavegui...
Quantum resonant dimensionality reduction
Fan Yang, Furong Wang, Xusheng Xu +4 more·May 21, 2024
Quantum computing is a promising candidate for accelerating machine learning tasks. Limited by the control accuracy of current quantum hardware, reducing the consumption of quantum resources is the key to achieving quantum advantage. Here, we propose...
Spectra of noisy parameterized quantum circuits: Single-Ring universality
Kristian Wold, P. Ribeiro, S. Denisov·May 19, 2024
Random unitaries are an important resource for quantum information processing. While their universal properties have been thoroughly analyzed, it is not known what happens to these properties when the unitaries are sampled on the present-day noisy in...
Disturbance Evaluation Circuit in Quantum Measurement
Haruki Emori, M. Ozawa, Akihisa Tomita·May 19, 2024
According to the uncertainty principle, every quantum measurement accompanies disturbance. In particular, accurate sequential measurements need the accurate control of disturbance. However, the correct role of disturbance in the uncertainty principle...