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Scalable unitary computing using time-parallelized photonic lattices.

Hyungchul Park1, Beomjoon Chae1, Hyunsoo Jang2

  • 1Intelligent Wave Systems Laboratory, Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Korea.

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Summary
This summary is machine-generated.

This study introduces time-parallelized photonic lattices for faster photonic computing. The novel approach enables scalable, time-domain computations, overcoming previous speed limitations.

Keywords:
bufferphotonic circuitphotonic computingresonatorscalabilityunitary operation

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Area of Science:

  • Photonics
  • Quantum Computing
  • Optical Computing

Background:

  • Photonic computing explores dimensions beyond space for scalability.
  • Time-domain computation using dynamical systems offers universal unitary operations.
  • Existing methods face O(N^2) time complexity, limiting practical use due to optical element constraints.

Purpose of the Study:

  • To propose a novel time-parallelized photonic lattice architecture.
  • To achieve O(N) time scalability in photonic computing.
  • To overcome the limitations of current time-domain photonic computation methods.

Main Methods:

  • Development of time-parallelized photonic lattices.
  • Implementation of a pseudospinor buffer operation for temporal information storage.
  • Analysis of spatial and temporal scaling properties.

Main Results:

  • Achieved O(N) time scalability while maintaining O(N) spatial scaling.
  • Demonstrated parallel unitary computation through the pseudospinor buffer.
  • Mitigated the need for high-quality factors and showed robustness against defects.

Conclusions:

  • The proposed time-parallelized photonic lattices offer a feasible path for practical time-domain photonic computation.
  • This approach significantly enhances the speed and scalability of optical computing.
  • The method's robustness broadens its applicability in photonic computing.