Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Analog simulation of noisy quantum circuits
Etienne Granet, Kévin Hémery, Henrik Dreyer·Oct 11, 2024
It is well known that simulating quantum circuits with low but nonzero hardware noise is more difficult than without noise. It requires either to perform density matrix simulations (coming with a space overhead) or to sample over “quantum trajectorie...
Quantum simulation of single-server Markovian queues: A dynamic amplification approach
Michal Koren, Or Peretz·Oct 10, 2024
Quantum computing is revolutionizing various fields, including operations research and queueing theory. This study presents a quantum method for simulating single-server Markovian (M/M/1) queues, making quantum computing more accessible to researcher...
Non-binary artificial neuron with phase variation implemented on a quantum computer
Jhordan Silveira de Borba, Jonas Maziero·Oct 10, 2024
The first artificial quantum neuron models followed a similar path to classic models and they work only with discrete values. Here we introduce an algorithm that generalizes the binary model manipulating the phase of complex numbers. We propose, test...
Securing HHL Quantum Algorithm against Quantum Computer Attacks
Yizhuo Tan, Hrvoje Kukina, Jakub Szefer·Oct 10, 2024
The advent of shared, cloud-based quantum computers introduces critical security vulnerabilities. This work identifies and demonstrates two novel attacks against the important HHL algorithm. The two attacks are the Improper Initialization Attack (IIA...
Bootstrapping the stationary state of bosonic open quantum systems
Gustave Robichon, A. Tilloy·Oct 9, 2024
We propose a method to compute expectation values of observables in the stationary state of a (Markovian) bosonic open quantum system. Using a hierarchy of semi-definite relaxations, we obtain finer and finer upper and lower bounds to any expectation...
Application of large language models to quantum state simulation
Shuangxiang Zhou, Ronghang Chen, Zheng An +2 more·Oct 9, 2024
Quantum computers leverage the unique advantages of quantum mechanics to achieve acceleration over classical computers for certain problems. Currently, various quantum simulators provide powerful tools for researchers, but simulating quantum evolutio...
Toward hybrid quantum simulations with qubits and qumodes on trapped-ion platforms
Jack Y. Araz, Matt Grau, Jake Montgomery +1 more·Oct 9, 2024
We explore the feasibility of gate-based hybrid quantum computing using both discrete (qubit) and continuous (qumode) variables on trapped-ion platforms. Trapped-ion systems have demonstrated record one- and two-qubit gate fidelities and long qubit c...
Engineering the nonlinearity of bosonic modes with a multiloop SQUID
Ziyue Hua, Yifang Xu, Weiting Wang +8 more·Oct 9, 2024
Engineering high-order nonlinearities while suppressing lower-order terms is crucial for quantum error correction and state control in bosonic systems, yet it remains an outstanding challenge. Here, we introduce a general framework of Nonlinearity-En...
Explicit Quantum Circuit for Simulating the Advection–Diffusion–Reaction Dynamics
Claudio Sanavio, Enea Mauri, Sauro Succi·Oct 8, 2024
We assess the convergence of the Carleman linearization of advection–diffusion–reaction (ADR) equations with a logistic nonlinearity. It is shown that five Carleman iterates provide a satisfactory approximation of the original ADR across a broad rang...
Observation of disorder-free localization using a (2+1)D lattice gauge theory on a quantum processor
Gaurav Gyawali, Shashwat Kumar, Y. Lensky +219 more·Oct 8, 2024
Disorder-induced phenomena in quantum many-body systems pose significant challenges for analytical methods and numerical simulations at relevant time and system scales. To reduce the cost of disorder-sampling, we investigate quantum circuits initiali...
Quantum Walk Search on Complete Multipartite Graph with Multiple Marked Vertices
Ningxiang Chen, Meng Li, Xiaoming Sun·Oct 7, 2024
Quantum walk is a potent technique for building quantum algorithms. This paper examines the quantum walk search algorithm on complete multipartite graphs with multiple marked vertices, which has not been explored before. Two specific cases of complet...
Lazy Qubit Reordering for Accelerating Parallel State-Vector-based Quantum Circuit Simulation
Yusuke Teranishi, Shoma Hiraoka, Wataru Mizukami +2 more·Oct 5, 2024
This article proposes two quantum operation scheduling methods for accelerating parallel state-vector-based quantum circuit simulation using multiple graphics processing units (GPUs). The proposed methods reduce all-to-all communication caused by qub...
Succinct Fermion Data Structures
Joseph Carolan, Luke Schaeffer·Oct 5, 2024
Simulating fermionic systems on a quantum computer requires representing fermionic states using qubits. The complexity of many simulation algorithms depends on the complexity of implementing rotations generated by fermionic creation-annihilation oper...
Quantum simulation of nonlinear dynamical systems using repeated measurement
J. Andress, Alexander D. Engel, Yuan Shi +1 more·Oct 4, 2024
We present a quantum algorithm based on repeated measurement to solve initial-value problems for nonlinear ordinary differential equations (ODEs), which may be generated from partial differential equations in plasma physics. We map a dynamical system...
Quantum Monte Carlo Integration for Simulation-Based Optimisation
Jingjing Cui, Philippe J.S. de Brouwer, Steven Herbert +7 more·Oct 4, 2024
We investigate the feasibility of integrating quantum algorithms as subroutines of simulation-based optimisation problems with relevance to and potential applications in mathematical finance. To this end, we conduct a thorough analysis of all systema...
Trotterless Simulation of Open Quantum Systems for NISQ Quantum Devices
Colin Burdine, Enrique P. Blair·Oct 4, 2024
The simulation of quantum systems is one of the flagship applications of near‐term NISQ (noisy intermediate‐scale quantum) computing devices. Efficiently simulating the rich, non‐unitary dynamics of open quantum systems remains challenging on NISQ ha...
Simulating Neutron Scattering on an Analog Quantum Processor
Nora M. Bauer, Victor Ale, P. Laurell +4 more·Oct 4, 2024
Neutron scattering characterization of materials allows for the study of entanglement and microscopic structure, but is inefficient to simulate classically for comparison to theoretical models and predictions. However, quantum processors, notably ana...
Quantum algorithm for the advection-diffusion equation and the Koopman-von Neumann approach to nonlinear dynamical systems
I. Novikau, I. Joseph·Oct 4, 2024
We propose an explicit algorithm based on the Linear Combination of Hamiltonian Simulations technique to simulate both the advection-diffusion equation and a nonunitary discretized version of the Koopman-von Neumann formulation of nonlinear dynamics....
Polynomial time constructive decision algorithm for multivariable quantum signal processing
Yuki Ito, Hitomi Mori, Kazuki Sakamoto +1 more·Oct 3, 2024
Quantum signal processing (QSP) and quantum singular value transformation (QSVT) have provided a unified framework for understanding many quantum algorithms, including factorization, matrix inversion, and Hamiltonian simulation. As a multivariable ve...
Photonic parameter-shift rule: Enabling gradient computation for photonic quantum computers
A. Pappalardo, P. Emeriau, Giovanni de Felice +5 more·Oct 3, 2024
We present a method for gradient computation in quantum algorithms implemented on linear optical quantum computing platforms. While parameter-shift rules have become a staple in qubit gate-based quantum computing for calculating gradients, their dire...