Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Tensor network reduced order models for wall-bounded flows
M. Kiffner, D. Jaksch·Mar 6, 2023
We introduce a widely applicable tensor network-based framework for developing reduced order models describing wall-bounded fluid flows. As a paradigmatic example, we consider the incompressible Navier-Stokes equations and the lid-driven cavity in tw...
Quantum Algorithm for the Linear Vlasov Equation with Collisions
Abtin Ameri, Erika Ye, P. Cappellaro +2 more·Mar 6, 2023
The Vlasov equation is a nonlinear partial differential equation that provides a first-principles description of the dynamics of plasmas. Its linear limit is routinely used in plasma physics to investigate plasma oscillations and stability. In this p...
Ever more optimized simulations of fermionic systems on a quantum computer
Qingfeng Wang, Ze-Pei Cian, Ming Li +2 more·Mar 6, 2023
Despite using a novel model of computation, quantum computers break down programs into elementary gates. Among such gates, entangling gates are the most expensive. In the context of fermionic simulations, we develop a suite of compilation and optimiz...
SimuQ: A Framework for Programming Quantum Hamiltonian Simulation with Analog Compilation
Yuxiang Peng, Jacob Young, Pengyu Liu +1 more·Mar 5, 2023
Quantum Hamiltonian simulation, which simulates the evolution of quantum systems and probes quantum phenomena, is one of the most promising applications of quantum computing. Recent experimental results suggest that Hamiltonian-oriented analog quantu...
Variational Quantum Eigensolver for Classification in Credit Sales Risk
Joanna Wi'sniewska, Marek Sawerwain·Mar 5, 2023
The data classification task is broadly utilized in numerous fields of science and it may be realized by different known approaches (e.g. neural networks). However, in this work, quantum computations were harnessed to solve the problem. We take into ...
Simplifying errors by symmetry and randomisation
James Mills, D. Sadhukhan, E. Kashefi·Mar 5, 2023
We present a set of methods to generate less complex error channels by quantum circuit parallelisation. The resulting errors are simplified as a consequence of their symmetrisation and randomisation. Initially, the case of a single error channel is a...
Pulse variational quantum eigensolver on cross-resonance-based hardware
D. Egger, Chiara Capecci, Bibek Pokharel +4 more·Mar 4, 2023
State-of-the-art noisy digital quantum computers can only execute short-depth quantum circuits. Variational algorithms are a promising route to unlock the potential of noisy quantum computers since the depth of the corresponding circuits can be kept ...
Quantum computation of phase transition in interacting scalar quantum field theory
Shane Thompson, G. Siopsis·Mar 4, 2023
It has been demonstrated that the critical point of the phase transition in scalar quantum field theory with a quartic interaction in one space dimension can be approximated via a Gaussian Effective Potential (GEP). We discuss how this critical point...
Spectral Gaps via Imaginary Time
Jacob M. Leamer, Alicia B. Magann, Gerard McCaul +1 more·Mar 3, 2023
The spectral gap occupies a role of central importance in many open problems in physics. We present an approach for evaluating the spectral gap of a Hamiltonian from a simple ratio of two expectation values, both of which are evaluated using a quantu...
Ablation loading of barium ions into a surface-electrode trap
X. Shi, S. Todaro, G. Mintzer +3 more·Mar 3, 2023
Trapped-ion quantum information processing may benefit from qubits encoded in isotopes that are practically available in only small quantities, e.g., due to low natural abundance or radioactivity. Laser ablation provides a method of controllably libe...
Realization of higher-order topological lattices on a quantum computer
Jin Ming Koh, Tommy Tai, Ching Hua Lee·Mar 3, 2023
Programmable quantum simulators may one day outperform classical computers at certain tasks. But at present, the range of viable applications with noisy intermediate-scale quantum (NISQ) devices remains limited by gate errors and the number of high-q...
Large-scale simulations of Floquet physics on near-term quantum computers
T. Eckstein, Refik Mansuroglu, Piotr Czarnik +5 more·Mar 3, 2023
Periodically driven quantum systems exhibit a diverse set of phenomena but are more challenging to simulate than their equilibrium counterparts. Here, we introduce the Quantum High-Frequency Floquet Simulation (QHiFFS) algorithm as a method to simula...
Determination of molecular energies via variational-based quantum imaginary time evolution in a superconducting qubit system
Z. Zong, Sai-nan Huai, T. Cai +10 more·Mar 2, 2023
As a valid tool for solving ground state problems, imaginary time evolution (ITE) is widely used in physical and chemical simulations. Different ITE-based algorithms in their quantum counterpart have recently been proposed and applied to some real sy...
Ising model formulation for highly accurate topological color codes decoding
Yugo Takada, Yusaku Takeuchi, K. Fujii·Mar 2, 2023
Quantum error correction is an essential ingredient for reliable quantum computation for theoretically provable quantum speedup. Topological color codes, one of the quantum error correction codes, have an advantage against the surface codes in that a...
Q2Logic: An Coarse-Grained Architecture targeting Schrödinger Quantum Circuit Simulations
Artur Podobas·Mar 2, 2023
Quantum computing is emerging as an important (but radical) technology that might take us beyond Moore's law for certain applications. Today, in parallel with improving quantum computers, computer scientists are relying heavily on quantum circuit sim...
Partitioning Quantum Chemistry Simulations with Clifford Circuits.
Philipp Schleich, Joseph Boen, L. Cincio +5 more·Mar 2, 2023
Current quantum computing hardware is restricted by the availability of only few, noisy qubits which limits the investigation of larger, more complex molecules in quantum chemistry calculations on quantum computers in the near term. In this work, we ...
Designing a Fast and Flexible Quantum State Simulator
Saveliy Yusufov, Charlee Stefanski, Constantin Gonciulea·Mar 2, 2023
This paper describes the design and implementation of Spinoza, a fast and flexible quantum simulator written in Rust. Spinoza simulates the evolution of a quantum system's state by applying quantum gates, with the core design principle being that a s...
High-fidelity parametric beamsplitting with a parity-protected converter
Yao Lu, Aniket Maiti, John W. O. Garmon +6 more·Mar 2, 2023
Fast, high-fidelity operations between microwave resonators are an important tool for bosonic quantum computation and simulation with superconducting circuits. An attractive approach for implementing these operations is to couple these resonators via...
Engineering phonon-phonon interactions in multimode circuit quantum acousto-dynamics
Uwe von Lupke, I. C. Rodrigues, Yu Yang +2 more·Mar 1, 2023
In recent years, remarkable progress has been made towards encoding and processing quantum information in the large Hilbert space of bosonic modes. Mechanical resonators are of great interest for this purpose, since they confine many high quality fac...
Robustness of quantum algorithms against coherent control errors
J. Berberich, D. Fink, C. Holm·Mar 1, 2023
Coherent control errors, for which ideal Hamiltonians are perturbed by unknown multiplicative noise terms, are a major obstacle for reliable quantum computing. In this paper, we present a framework for analyzing the robustness of quantum algorithms a...