Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Algorithm for Copula-Based Risk Aggregation using Orthogonal Series Density Estimation
Hitomi Mori, Koichi Miyamoto·Apr 16, 2024
Quantum Monte Carlo integration (QMCI) provides a quadratic speed-up over its classical counterpart, and its applications have been investigated in various fields, including finance. This paper considers its application to risk aggregation, one of th...
Discovering Factorization Surface of Quantum Spin Chains with Machine Learning
Nakul Aggarwal, Keshav Das Agarwal, Tanoy Kanti Konar +2 more·Apr 16, 2024
Entanglement in quantum many-body systems is required for a variety of quantum information tasks, making it crucial to identify the parameter space in which the ground state is fully separable, known as the factorization surface (FS). Nonetheless, th...
Exploring Post Quantum Cryptography with Quantum Key Distribution for Sustainable Mobile Network Architecture Design
Sanzida Hoque, Abdullah Aydeger, Engin Zeydan·Apr 16, 2024
The proliferation of mobile networks and their increasing importance to modern life, combined with the emerging threat of quantum computing, present new challenges and opportunities for cyber-security. This paper addresses the complexity of protectin...
Warm-Start Variational Quantum Policy Iteration
Nico Meyer, Jakob Murauer, Alexander Popov +4 more·Apr 16, 2024
Reinforcement learning is a powerful framework aiming to determine optimal behavior in highly complex decision-making scenarios. This objective can be achieved using policy iteration, which requires to solve a typically large linear system of equatio...
Quantum Simulation of Open Quantum Dynamics via Non-Markovian Quantum State Diffusion
Yukai Guo, Xing Gao·Apr 16, 2024
Quantum simulation of non-Markovian open quantum dynamics is essential but challenging for standard quantum computers due to their non-Hermitian nature, leading to non-unitary evolution, and the limitations of available quantum resources. Here we int...
Hilbert Space Delocalization under Random Unitary Circuits
X. Turkeshi, P. Sierant·Apr 16, 2024
The unitary dynamics of a quantum system initialized in a selected basis state yield, generically, a state that is a superposition of all the basis states. This process, associated with the quantum information scrambling and intimately tied to the re...
A hybrid Quantum-Classical Algorithm for Mixed-Integer Optimization in Power Systems
P. Ellinas, Samuel Chevalier, Spyros Chatzivasileiadis·Apr 16, 2024
Mixed Integer Linear Programming (MILP) can be considered the backbone of the modern power system optimization process, with a large application spectrum, from Unit Commitment and Optimal Transmission Switching to verifying Neural Networks for power ...
Constructing NP#P-complete problems and #P-hardness of circuit extraction in phase-free ZH
Piotr Mitosek·Apr 16, 2024
The ZH calculus is a graphical language for quantum computation reasoning. The phase-free variant offers a simple set of generators that guarantee universality. ZH calculus is effective in MBQC and analysis of quantum circuits constructed with the un...
Nonlinear cascaded quantum network with giant emitters
Xin Wang, Jia-Qi Li, Zhihai Wang +4 more·Apr 15, 2024
Chiral quantum optics is central to developing scalable quantum networks, yet existing approaches rely predominantly on linear single-photon regimes. It remains unclear how to generate directional multiphotons. Here we show that giant emitters couple...
Quantum computers, quantum computing, and quantum thermodynamics
Fabrizio Cleri·Apr 15, 2024
Quantum thermodynamics aims to extend standard thermodynamics and non-equilibrium statistical physics to systems with sizes well below the thermodynamic limit. It is a rapidly evolving research field that promises to change our understanding of the f...
Sparse Simulation of VQE Circuits
Damian S. Steiger, Thomas Haner, Scott N. Genin +1 more·Apr 15, 2024
The Variational Quantum Eigensolver (VQE) is a promising algorithm for future Noisy Intermediate-Scale Quantum (NISQ) devices to simulate chemical systems. In this paper, we consider the classical simulation of the iterative Qubit Coupled Cluster (iQ...
Wormholes and factorization in exact effective theory
Sergio Hernandez-Cuenca·Apr 15, 2024
We study the general framework of effective theories obtained via exact path integration of a complete theory over some sector of its degrees of freedom. Theories constructed this way contain multi-integrals which couple fields arbitrarily far apart,...
Quantum optimal control theory for the shaping of flying qubits
Xue Dong, Xi Cao, Wen-Long Li +3 more·Apr 15, 2024
The control of flying qubits carried by itinerant photons is ubiquitous in quantum networks. Beside their logical states, the shape of flying qubits must also be tailored for high-efficiency information transmission. In this paper, we introduce quant...
Simulating Electron Transfer in a Molecular Triad within an Optical Cavity Using NISQ Computers
Ningyi Lyu, Pouya Khazaei, Eitan Geva +1 more·Apr 15, 2024
We present a quantum algorithm based on the Tensor-Train Thermo-Field Dynamics (TT-TFD) method to simulate the open quantum system dynamics of intramolecular charge transfer modulated by an optical cavity on noisy intermediate-scale quantum (NISQ) co...
Variational quantum simulation: a case study for understanding warm starts
Ricard Puig-i-Valls, Marc Drudis, Supanut Thanasilp +1 more·Apr 15, 2024
The barren plateau phenomenon, characterized by loss gradients that vanish exponentially with system size, poses a challenge to scaling variational quantum algorithms. Here we explore the potential of warm starts, whereby one initializes closer to a ...
Dynamical mean field theory for real materials on a quantum computer
Johannes Selisko, Maximilian Amsler, Christopher Wever +6 more·Apr 15, 2024
Quantum computers (QC) could harbor the potential to significantly advance materials simulations, particularly at the atomistic scale involving strongly correlated fermionic systems, where an accurate description of quantum many-body effects scales u...
Quantum subspace expansion in the presence of hardware noise
João C. Getelina, Prachi Sharma, T. Iadecola +2 more·Apr 14, 2024
Finding ground state energies on current quantum processing units (QPUs) using algorithms such as the variational quantum eigensolver (VQE) continues to pose challenges. Hardware noise severely affects both the expressivity and trainability of parame...
Extension of Clifford Data Regression Methods for Quantum Error Mitigation
J. Pérez-Guijarro, A. Pagés-Zamora, J. Fonollosa·Apr 14, 2024
In addressing the challenge posed by noise in actual quantum devices, the application of quantum error mitigation techniques becomes essential. These techniques are resource-efficient, making them viable for implementation in noisy intermediate-scale...
An Unsupervised Machine Learning to Optimize Hybrid Quantum Noise Clusters for Gaussian Quantum Channel
Mouli Chakraborty, Anshu Mukherjee, Ioannis Krikidis +2 more·Apr 13, 2024
This work focuses on optimizing the hybrid quantum noise model to improve the capacity of Gaussian quantum channels using Machine Learning (ML) generated clusters. The work specifically leverages Gaussian Mixture Model (GMM) and the Expectation-Maxim...
Performance analysis of a filtering variational quantum algorithm
Gabriel Marin-Sanchez, D. Amaro·Apr 13, 2024
Even a minor boost in solving combinatorial optimization problems can greatly benefit multiple industries. Quantum computers, with their unique information processing capabilities, hold promise for delivering such enhancements. The filtering variatio...