Programmable high-dimensional Hamiltonian in a photonic waveguide array

Yang Yang, Robert J. Chapman, Ben Haylock, Francesco Lenzini, Yogesh N. Joglekar (), Mirko Lobino and Alberto Peruzzo ()
Additional contact information
Yang Yang: RMIT University
Robert J. Chapman: RMIT University
Ben Haylock: Griffith University
Francesco Lenzini: Griffith University
Yogesh N. Joglekar: Indiana University Purdue University Indianapolis (IUPUI)
Mirko Lobino: Griffith University
Alberto Peruzzo: RMIT University

Nature Communications, 2024, vol. 15, issue 1, 1-7

Abstract: Abstract Waveguide lattices offer a compact and stable platform for a range of applications, including quantum walks, condensed matter system simulation, and classical and quantum information processing. However, to date, waveguide lattice devices have been static and designed for specific applications. We present a programmable waveguide array in which the Hamiltonian terms can be individually electro-optically tuned to implement various Hamiltonian continuous-time evolutions on a single device. We used a single array with 11 waveguides in lithium niobate, controlled via 22 electrodes, to perform a range of experiments that realized the Su-Schriffer-Heeger model, the Aubrey-Andre model, and Anderson localization, which is equivalent to over 2500 static devices. Our architecture’s micron-scale local electric fields overcome the cross-talk limitations of thermo-optic phase shifters in other platforms such as silicon, silicon-nitride, and silica. Electro-optic control allows for ultra-fast and more precise reconfigurability with lower power consumption, and with quantum input states, our platform can enable the study of multiple condensed matter quantum dynamics with a single device.

Date: 2024
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DOI: 10.1038/s41467-023-44185-z

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