Papers
Live trends in quantum computing research, updated daily from arXiv.
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Introducing UNIQuE: The Unconventional Noiseless Intermediate Quantum Emulator
Reece Robertson, D. Ventura·Sep 11, 2024
We implement an open-source quantum computing emulator that includes arithmetic operations, the quantum Fourier transform, and quantum phase estimation. The emulator provides significant savings in both temporal and spatial resources compared to simu...
A Comprehensive Cross-Model Framework for Benchmarking the Performance of Quantum Hamiltonian Simulations
Avimita Chatterjee, Sonny Rappaport, Anish Giri +5 more·Sep 11, 2024
Quantum Hamiltonian simulation is one of the most promising applications of quantum computing and forms the basis for many quantum algorithms. Benchmarking them is an important gauge of progress in quantum computing technology. We present a methodolo...
GAN Decoder on a Quantum Toric Code for Noise‐Robust Quantum Teleportation
Jiaxin Li, Zhimin Wang, Alberto Ferrara +2 more·Sep 11, 2024
A generative adversarial network (GAN)‐based decoder is proposed for quantum topological codes and applied it to enhance a quantum teleportation protocol under depolarizing noise. By constructing and training the GAN's generator and discriminator net...
Efficient state preparation for multivariate Monte Carlo simulation
Hitomi Mori, K. Mitarai, Keisuke Fujii·Sep 11, 2024
Quantum state preparation is a task to prepare a state with a specific function encoded in the amplitude, which is an essential subroutine in many quantum algorithms. In this paper, we focus on multivariate state preparation, as it is an important ex...
Simulating continuous-space systems with quantum-classical wave functions
Friederike Metz, Gabriel Pescia, Giuseppe Carleo·Sep 10, 2024
Most non-relativistic interacting quantum many-body systems, such as atomic and molecular ensembles or materials, are naturally described in terms of continuous-space Hamiltonians. The simulation of their ground-state properties on digital quantum co...
Tailoring the light-matter interaction for high-fidelity holonomic gate operations in multiple systems
Zhihuang Kang, Shutong Wu, Kunji Han +4 more·Sep 10, 2024
Realization of quantum computing requires the development of high-fidelity quantum gates that are resilient to decoherence, control errors, and environmental noise. While non-adiabatic holonomic quantum computation (NHQC) offers a promising approach,...
Towards few-body QCD on a quantum computer
J. Gálvez-Viruet·Sep 10, 2024
Quantum computers are promising tools for the simulation of many-body systems, and among those, QCD stands out by its rich phenomenology. Every simulation starts with a codification, and here we succently review a newly developed compact encoding bas...
Measuring temporal entropies in experiments
Aleix Bou-Comas, Carlos Ramos Marimón, Jan T. Schneider +2 more·Sep 9, 2024
We propose a novel experimental protocol to measure generalized temporal entropies in many-body quantum systems. Our approach involves using local operators as probes to characterize the out-of-equilibrium dynamics induced by a geometric double quenc...
Steady-State Statistics of Classical Nonlinear Dynamical Systems from Noisy Intermediate-Scale Quantum Devices
Yash Lokare, Dingding Wei, Lucas Chan +2 more·Sep 9, 2024
Classical nonlinear dynamical systems are often characterized by their steady-state probability distribution functions (PDFs). Typically, PDFs are accumulated from numerical simulations that involve solving the underlying dynamical equations of motio...
Non-local resources for error correction in quantum LDPC codes
Omprakash Chandra, Gopikrishnan Muraleedharan, G. Brennen·Sep 9, 2024
Quantum low density parity check (qLDPC) codes are an attractive alternative to the surface code due to their relatively high code rate and distance. However, unlike the surface code which has simple, geometrically local, stabilizer checks, high perf...
Effect of noise on quantum circuit realization of non-Hermitian time crystals
Weihua Xie, Michael H. Kolodrubetz, Vadim Oganesyan·Sep 9, 2024
Non-Hermitian quantum dynamics lie in an intermediate regime between unitary Hamiltonian dynamics and trace-preserving non-unitary open quantum system dynamics. Given differences in the noise tolerance of unitary and non-unitary dynamics, it is inter...
Simulating Chemistry with Fermionic Optical Superlattices
F. Gkritsis, Daniel Dux, Jin Zhang +3 more·Sep 9, 2024
We show that quantum-number-preserving ansatzes for variational optimization in quantum chemistry find an elegant mapping to ultracold fermions in optical superlattices. Using native Hubbard dynamics, trial ground states of molecular Hamiltonians can...
Simulating Non-Markovian Dynamics in Multidimensional Electronic Spectroscopy via Quantum Algorithm.
Federico Gallina, Matteo Bruschi, Roberto Cacciari +1 more·Sep 9, 2024
Including the effect of the molecular environment in the numerical modeling of time-resolved electronic spectroscopy remains an important challenge in computational spectroscopy. In this contribution, we present a general approach for the simulation ...
End-to-End Quantum Simulation of a Chemical System
W. V. Dam, Hongbin Liu, Guang Hao Low +6 more·Sep 9, 2024
We demonstrate the first end-to-end integration of high-performance computing (HPC), reliable quantum computing, and AI in a case study on catalytic reactions producing chiral molecules. We present a hybrid computation workflow to determine the stron...
Study on Frustrated Quantum Phase Transition Achievable by Quantum Computing
Zilin Chen·Sep 9, 2024
Quantum computers, with parallel computing and entanglement effects, excel in cryptography analysis and big data processing. However, they are not fully developed yet, and their performance needs further evaluation. Traditional computer data, especia...
Preparing Schrödinger Cat States in a Microwave Cavity Using a Neural Network
Hector Hutin, Pavlo Bilous, Chengzhi Ye +8 more·Sep 9, 2024
Scaling up quantum computing devices requires solving ever more complex quantum control tasks. Machine learning has been proposed as a promising approach to tackle the resulting challenges. However, experimental implementations are still scarce. In t...
Generalized Parity Measurements and Efficient Large Multi-component Cat State Preparation with Quantum Signal Processing
Sina Zeytinoğlu·Sep 8, 2024
Generalized parity measurements are instrumental for the preparation of non-trivial quantum states and the detection of errors in error correction codes. Here, we detail a proposal for efficient and robust generalized parity measurements based on Qua...
Experimental Quantum Simulation of Chemical Dynamics.
T. Navickas, R. MacDonell, C. Valahu +10 more·Sep 6, 2024
Accurate simulation of dynamic processes in molecules and reactions is among the most challenging problems in quantum chemistry. Quantum computers promise efficient chemical simulation, but the existing quantum algorithms require many logical qubits ...
Entropy-driven entanglement forging
Axel P'erez-Obiol, S. Masot-Llima, Antonio M. Romero +4 more·Sep 6, 2024
Simulating physical systems with variational quantum algorithms is a well-studied approach, but it is challenging to implement in current devices due to demands in qubit number and circuit depth. We show how limited knowledge of the system, namely th...
Classical Algorithms for Hamiltonian Dynamics Mean Value and Guided Local Hamiltonian Problem
Yusen Wu, Yukun Zhang, Chuan Wang +1 more·Sep 6, 2024
The efficient simulation of quantum dynamics and ground states is a central challenge in physics and a key frontier for quantum advantage. While short-time evolution in one-dimensional systems can often be simulated classically, extending this to hig...