Simulating photonic devices with noisy optical elements

• URL: http://arxiv.org/abs/2311.10613v3
• Date: Thu, 7 Mar 2024 11:03:50 GMT
• Title: Simulating photonic devices with noisy optical elements
• Authors: Michele Vischi, Giovanni Di Bartolomeo, Massimiliano Proietti, Seid Koudia, Filippo Cerocchi, Massimiliano Dispenza and Angelo Bassi
• Abstract summary: In the near-term, the performance of any quantum algorithm should be tested and simulated in the presence of noise. We apply the recently proposed noisy gates approach to efficiently simulate noisy optical circuits. We also evaluate the performance of a photonic variational quantum algorithm to solve the MAX-2-CUT problem.
• Score: 0.615738282053772
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum computers are inherently affected by noise. While in the long-term error correction codes will account for noise at the cost of increasing physical qubits, in the near-term the performance of any quantum algorithm should be tested and simulated in the presence of noise. As noise acts on the hardware, the classical simulation of a quantum algorithm should not be agnostic on the platform used for the computation. In this work, we apply the recently proposed noisy gates approach to efficiently simulate noisy optical circuits described in the dual rail framework. The evolution of the state vector is simulated directly, without requiring the mapping to the density matrix framework. Notably, we test the method on both the gate-based and measurement-based quantum computing models, showing that the approach is very versatile. We also evaluate the performance of a photonic variational quantum algorithm to solve the MAX-2-CUT problem. In particular we design and simulate an ansatz which is resilient to photon losses up to $p \sim 10^{-3}$ making it relevant for near term applications.

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