Emergent Equilibrium in All-Optical Single Quantum-Trajectory Ising Machines

• URL: http://arxiv.org/abs/2412.12768v1
• Date: Tue, 17 Dec 2024 10:31:55 GMT
• Title: Emergent Equilibrium in All-Optical Single Quantum-Trajectory Ising Machines
• Authors: Jacopo Tosca, Marcello Calvanese Strinati, Claudio Conti, Cristiano Ciuti,
• Abstract summary: We investigate the dynamics of multi-mode optical systems driven by two-photon processes and subject to non-local losses, incorporating quantum noise at the Gaussian level. Our findings show that the statistics retrieved from a single Gaussian quantum trajectory exhibits emergent thermal equilibrium governed by an Ising Hamiltonian, encoded in the dissipative coupling between modes.
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• Abstract: We investigate the dynamics of multi-mode optical systems driven by two-photon processes and subject to non-local losses, incorporating quantum noise at the Gaussian level. Our findings show that the statistics retrieved from a single Gaussian quantum trajectory exhibits emergent thermal equilibrium governed by an Ising Hamiltonian, encoded in the dissipative coupling between modes. The system's effective temperature is set by the driving strength relative to the oscillation threshold. Given the ultra-short time scales typical of all-optical devices, our study demonstrates that such multi-mode optical systems can operate as ultra-fast Boltzmann samplers, paving the way towards the realization of efficient hardware for combinatorial optimization, with promising applications in machine learning and beyond.

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