Integrated coherent Ising machines for next-generation optimization accelerators
Thomas Van Vaerenbergh, Géza Kurczveil, Antoine Descos, Fabian Böhm, Suhas Kumar, Di Liang, Guy Verschaffelt, Guy Van der Sande, John Paul Strachan, Ray G. Beausoleil · 2021
Coherent Ising machines have been proposed as a promising platform for combinatorial optimization. Initial fiber-based, FPGA-assisted instantiations experimentally outperform quantum annealers based on superconducting qubits in speed and energy-efficiency due their ability to have programmable all-to-all connectivity between the Ising nodes. Since then, multiple flavors of coherent Ising machines have been proposed based on silicon photonics. In this talk, we will compare and contrast these integrated Ising machines with their table-top setup counterparts and their upcoming competitors in digital and analog electronics. Moreover, we will explain how large-scale problems can be mapped to small-scale integrated Ising cores.