Highly Versatile FPGA-Implemented Cyber Coherent Ising Machine
Toru Aonishi, Tatsuya Nagasawa, Toshiyuki Koizumi, Mastiyage Don, Sudeera Hasaranga Gunathilaka, Kazushi Mimura, Masato Okada, Satoshi Kako,, Yoshihisa Yamamoto

TL;DR
This paper presents a versatile FPGA-based cyber coherent Ising machine capable of handling large-scale problems with continuous interactions, outperforming previous FPGA and GPU implementations in speed and application scope.
Contribution
The authors developed a flexible FPGA implementation of the cyber CIM that supports multiple algorithms and continuous interactions, enabling large-scale problem solving and new applications.
Findings
Achieved N=4096 spins on a single FPGA.
Enabled applications like CDMA detection and compressed sensing.
Over ten times faster than GPU implementations.
Abstract
In recent years, quantum Ising machines have drawn a lot of attention, but due to physical implementation constraints, it has been difficult to achieve dense coupling, such as full coupling with sufficient spins to handle practical large-scale applications. Consequently, classically computable equations have been derived from quantum master equations for these quantum Ising machines. Parallel implementations of these algorithms using FPGAs have been used to rapidly find solutions to these problems on a scale that is difficult to achieve in physical systems. We have developed an FPGA implemented cyber coherent Ising machine (cyber CIM) that is much more versatile than previous implementations using FPGAs. Our architecture is versatile since it can be applied to the open-loop CIM, which was proposed when CIM research began, to the closed-loop CIM, which has been used recently, as well as…
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Taxonomy
TopicsQuantum Computing Algorithms and Architecture · Chaos-based Image/Signal Encryption · Neural Networks and Applications
