Engineering Reflective Metasurfaces with Ising Hamiltonian and Quantum Annealing
| Autor: | Charles Ross, Gabriele Gradoni, Zhen Peng, Qi Jian Lim |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Quantum annealing Phase (waves) 020206 networking & telecommunications 02 engineering and technology Energy minimization Classical mechanics 0202 electrical engineering electronic engineering information engineering Ising model Electrical and Electronic Engineering Adiabatic process Quantum Phase modulation Hamiltonian (control theory) |
| DOI: | 10.36227/techrxiv.14615031.v1 |
| Popis: | We present a novel and flexible method to optimize the phase response of reflective metasurfaces towards a desired scattering profile. The scattering power is expressed as a spin-chain Hamiltonian using the radar cross section formalism. For metasurfaces reflecting an oblique plane wave, an Ising Hamiltonian is obtained. Thereby, the problem of achieving the scattering profile is recast into finding the ground-state solution of the associated Ising Hamiltonian. To rapidly explore the configuration states, we encode the Ising coefficients with quantum annealing algorithms, taking advantage of the fact that the adiabatic evolution efficiently performs energy minimization in the Ising model. Finally, the optimization problem is solved on the D-Wave 2048-qubit quantum adiabatic optimizer machine for binary phase as well as quadriphase reflective metasurfaces. Even though the work is focused on the phase modulation of metasurfaces, we believe this approach paves the way to fast optimization of reconfigurable intelligent surfaces that are mod- ulated in both amplitude and phase for multi-beam generation in and beyond 5G/6G mobile networks. |
| Databáze: | OpenAIRE |
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