Ising Machine Based on Electrically Coupled Spin Hall Nano-Oscillators

@article{McGoldrick2022IsingMB,
  title={Ising Machine Based on Electrically Coupled Spin Hall Nano-Oscillators},
  author={Brooke C. McGoldrick and Jonathan Z. Sun and Luqiao Liu},
  journal={Physical Review Applied},
  year={2022}
}
The Ising machine is an unconventional computing architecture that can be used to solve NP-hard combinatorial optimization problems more efficiently than traditional von Neumann architectures. Fast, compact oscillator networks which provide programmable connectivities among arbitrary pairs of nodes are highly desirable for the development of practical oscillator-based Ising machines. Here we propose using an electrically coupled array of GHz spin Hall nano-oscillators to realize such a network… 

References

SHOWING 1-10 OF 31 REFERENCES
Analog Coupled Oscillator Based Weighted Ising Machine
TLDR
An analog computing system with coupled non-linear oscillators which is capable of solving complex combinatorial optimization problems using the weighted Ising model is reported, and scaling analysis suggests that large coupled oscillator networks may be used to solve computationally intensive problems faster and more efficiently than conventional algorithms.
Ultrafast Ising Machines using spin torque nano-oscillators
Combinatorial optimization problems are known for being particularly hard to solve on traditional von Neumann architectures. This has led to the development of Ising Machines (IMs) based on quantum
An Ising Hamiltonian solver based on coupled stochastic phase-transition nano-oscillators
  • S. Dutta, A. Khanna, +5 authors S. Datta
  • Nature Electronics
  • 2021
Combinatorial optimization problems belong to the non-deterministic polynomial time (NP)-hard complexity class, and their computational requirements scale exponentially with problem size. They can be
Coupled Spin-Torque Nano-Oscillator-Based Computation
TLDR
An in-depth analysis of how the “self-organizing” ability of coupled STNO array can be effectively used for computations that are unsuitable or inefficient in the von-Neumann computing domain is provided.
A fully programmable 100-spin coherent Ising machine with all-to-all connections
TLDR
A scalable optical processor with electronic feedback that can be realized at large scale with room-temperature technology is presented and is able to find exact solutions of, or sample good approximate solutions to, a variety of hard instances of Ising problems.
A coherent Ising machine for 2000-node optimization problems
TLDR
It is shown that an optical processing approach based on a network of coupled optical pulses in a ring fiber can be used to model and optimize large-scale Ising systems, and a coherent Ising machine outperformed simulated annealing in terms of accuracy and computation time for a 2000-node complete graph.
Integration of GMR-based spin torque oscillators and CMOS circuitry
This paper demonstrates the integration of giant magnetoresistance (GMR) spin torque oscillators (STO) with dedicated high frequency CMOS circuits. The wire-bonding-based integration approach is
Self-Injection Locking of a Vortex Spin Torque Oscillator by Delayed Feedback
TLDR
The results reveal new approaches for controlling the non-autonomous dynamics of spin torque oscillators, a key issue for rf spintronics applications as well as for the development of neuro-inspired spin-torque oscillators based devices.
Simulation of coupled spin torque oscillators for pattern recognition
In this paper, we use circuit-level simulations to investigate the synchronization dynamics of spin torque oscillators (STOs) and demonstrate a pattern recognition scheme based on STO dynamics. We
Phase noise in oscillators: a unifying theory and numerical methods for characterization
Phase noise is a topic of theoretical and practical interest in electronic circuits, as well as in other fields, such as optics. Although progress has been made in understanding the phenomenon, there
...
1
2
3
4
...