Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
BosonSampling.jl: A Julia package for quantum multi-photon interferometry
Benoît Seron, A. Restivo·Dec 19, 2022
We present a free open source package for high performance simulation and numerical investigation of boson samplers and, more generally, multi-photon interferometry. Our package is written in Julia, allowing C-like performance with easy notations and...
Unbiased random circuit compiler for time-dependent Hamiltonian simulation
Xiao-Ming Zhang, Zixuan Huo, Ke Liu +2 more·Dec 19, 2022
Time-dependent Hamiltonian simulation (TDHS) is a critical task in quantum computing. Existing algorithms are generally biased with a small algorithmic error $\varepsilon$, and the gate complexity scales as $O(\text{poly}(1/\varepsilon))$ for product...
When to Reject a Ground State Preparation Algorithm
Katerina Gratsea, Chong Sun, Peter D. Johnson·Dec 19, 2022
In recent years substantial research effort has been devoted to quantum algorithms for ground state energy estimation (GSEE) in chemistry and materials. Given the many heuristic and non-heuristic methods being developed, it is challenging to assess w...
Simulation of Linear Non-Hermitian Boundary-Value Problems with Quantum Singular-Value Transformation
I. Novikau, I. Dodin, E. Startsev·Dec 18, 2022
We propose a quantum algorithm for simulating dissipative waves in inhomogeneous linear media as a boundary-value problem. Using the so-called quantum singular value transformation (QSVT), we construct a quantum circuit that models the propagation of...
Hybrid Quantum Singular Spectrum Decomposition for Time Series Analysis
Jasper Postema, P. Bonizzi, G. Koekoek +2 more·Dec 17, 2022
Classical data analysis requires computational efforts that become intractable in the age of Big Data. An essential task in time series analysis is the extraction of physically meaningful information from a noisy time series. One algorithm devised fo...
Efficient Circuit Implementations of Continuous-Time Quantum Walks for Quantum Search
R. Portugal, J. K. Moqadam·Dec 17, 2022
Quantum walks are a powerful framework for simulating complex quantum systems and designing quantum algorithms, particularly for spatial search on graphs, where the goal is to find a marked vertex efficiently. In this work, we present efficient quant...
Estimating truncation effects of quantum bosonic systems using sampling algorithms
M. Hanada, Junyu Liu, E. Rinaldi +1 more·Dec 16, 2022
To simulate bosons on a qubit- or qudit-based quantum computer, one has to regularize the theory by truncating infinite-dimensional local Hilbert spaces to finite dimensions. In the search for practical quantum applications, it is important to know h...
Hybrid Quantum Generative Adversarial Networks for Molecular Simulation and Drug Discovery
Prateek Jain, Param Pathak, Krishna Bhatia +2 more·Dec 15, 2022
In molecular research, the modelling and analysis of molecules through simulation is an important part that has a direct influence on medical development, material science and drug discovery. The processing power required to design protein chains wit...
Experimental quantum computational chemistry with optimized unitary coupled cluster ansatz
Shaojun Guo, Jinzhao Sun, H. Qian +35 more·Dec 15, 2022
Quantum computational chemistry has emerged as a potential application of quantum computing. Hybrid quantum-classical computing methods, such as variational quantum eigensolvers, have been designed as promising solutions to quantum chemistry problems...
Accelerating Quantum Computations of Chemistry Through Regularized Compressed Double Factorization
O. Oumarou, Maximilian Scheurer, R. Parrish +2 more·Dec 15, 2022
We propose the regularized compressed double factorization (RC-DF) method to classically compute compressed representations of molecular Hamiltonians that enable efficient simulation with noisy intermediate scale (NISQ) and error corrected quantum al...
Riemannian quantum circuit optimization for Hamiltonian simulation
Ayse Kotil, R. Banerjee, Qunsheng Huang +1 more·Dec 15, 2022
Hamiltonian simulation, i.e. simulating the real time evolution of a target quantum system, is a natural application of quantum computing. Trotter-Suzuki splitting methods can generate corresponding quantum circuits; however, a faithful approximation...
Time-dependent Rabi frequencies to protect quantum operations on an atomic qutrit by continuous dynamical decoupling
Adonai Hilário da Silva, R. Napolitano, F. Fanchini +1 more·Dec 14, 2022
We investigate the form required for the time-dependent Rabi frequencies involved in a procedure capable to protect the action of quantum gates on an atomic qutrit by means of external fields continuously decoupling the system from the environmental ...
Classical simulators as quantum error mitigators via circuit cutting
Ji Liu, Alvin Gonzales, Zain Saleem·Dec 14, 2022
We introduce an error mitigation framework that mitigates errors in a quantum circuit using circuit cutting. Our framework can be implemented in polynomial time for a wide variety of quantum circuits. Our technique involves cutting the circuit in suc...
High-Threshold Quantum Computing by Fusing One-Dimensional Cluster States.
S. Paesani, Benjamin J. Brown·Dec 13, 2022
We propose a measurement-based model for fault-tolerant quantum computation that can be realized with one-dimensional cluster states and fusion measurements only; basic resources that are readily available with scalable photonic hardware. Our simulat...
A SAT Approach to the Initial Mapping Problem in SWAP Gate Insertion for Commuting Gates
A. Matsuo, S. Yamashita, D. Egger·Dec 12, 2022
Most quantum circuits require SWAP gate insertion to run on quantum hardware with limited qubit connectivity. A promising SWAP gate insertion method for blocks of commuting two-qubit gates is a predetermined swap strategy which applies layers of SWAP...
On the quantum simulation of complex networks
Duarte Magano, João P. Moutinho, B. Coutinho·Dec 12, 2022
Quantum walks provide a natural framework to approach graph problems with quantum computers, exhibiting speedups over their classical counterparts for tasks such as the search for marked nodes or the prediction of missing links. Continuous-time quant...
NFNet: Non-interacting Fermion Network for Efficient Simulation of Large-scale Quantum Systems
Pengyuan Zhai, S. Yelin·Dec 12, 2022
We present NFNet, a PyTorch-based framework for polynomial-time simulation of large-scale, continuously controlled quantum systems, supporting parallel matrix computation and auto-differentiation of network parameters. It is based on the non-interact...
Importance sampling for stochastic quantum simulations
Oriel Kiss, M. Grossi, A. Roggero·Dec 12, 2022
Simulating many-body quantum systems is a promising task for quantum computers. However, the depth of most algorithms, such as product formulas, scales with the number of terms in the Hamiltonian, and can therefore be challenging to implement on near...
Gaussian breeding for encoding a qubit in propagating light
Kan Takase, Kosuke Fukui, Akito Kawasaki +5 more·Dec 11, 2022
Practical quantum computing requires robust encoding of logical qubits in physical systems to protect fragile quantum information. Currently, the lack of scalability limits the logical encoding in most physical systems, and thus the high scalability ...
Applying NOX Error Mitigation Protocols to Calculate Real-time Quantum Field Theory Scattering Phase Shifts
Zachary P. Parks, Arnaud Carignan-Dugas, Erik J. Gustafson +2 more·Dec 10, 2022
Real-time scattering calculations on a Noisy Intermediate Scale Quantum (NISQ) quantum computer are disrupted by errors that accumulate throughout the circuits. To improve the accuracy of such physics simulations, one can supplement the application c...