Work

Extracting Hamiltonian Parameters for Flopping Mode Qubits from Finite Element Method Quantum Device Simulations

Year: 2026

Type: conference-paper

Abstract: As quantum computers develop, their qubit counts will increase but so too will the distances between these qubits.Qubit-to-qubit interactions limited to the nanoscale will no longer be sufficient; we must have macroscopic interaction.It has been demonstrated that coplanar waveguides can couple distant "flopping mode qubits" separated by up to several millimetres.Such structures can be simulated via FEM-based simulators such as QTCAD.However, the complexity of these devices hinders simulation speed.To remedy this, we can instead use a high-level Hamiltonian model.In this work, we compare these approaches for modelling a flopping-mode qubit.In eigenenergy vs detuning results, we demonstrate a sufficiently good correspondence between both models without any fitting parameters.

Source: URSI General Assembly and Scientific Symposium

DOI: 10.46620/ursigass26/oddp3308

Authors: Brian Malone, Andrii Semenov, Andrii Sokolov, Ilhami Unal, Elena Blokhina

Institution: University College Dublin

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W7213446291

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