Inverse design of Ancillary System for Quantum Noise Cancellation

• URL: http://arxiv.org/abs/2408.04418v1
• Date: Thu, 8 Aug 2024 12:45:15 GMT
• Title: Inverse design of Ancillary System for Quantum Noise Cancellation
• Authors: Fabio Anselmi, Fabio Benatti, Giuseppe D'Auria, Giovanna Morigi,
• Abstract summary: We propose a novel approach to the decoherence effects on a target system S by coupling it to an ancillary system A with tunable parameters. By suitably engineering the S-A interaction Hamiltonian, a dark factorized compound state is found that achieves effective noise cancellation and significantly preserves quantum coherence in the target system S.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We propose a novel approach to mitigate the decoherence effects on a target system S by coupling it to an ancillary system A with tunable parameters. By suitably engineering the S-A interaction Hamiltonian, a dark factorized compound state is found that achieves effective noise cancellation and significantly preserves quantum coherence in the target system S. We illustrate our methodology for a system $S$ consisting of two-mode Bosons trapped in a double-well potential and affected by decoherence through a Gorini-Kossakowski-Sudarshan-Lindblad (GKSL) master equation. By a suitable coupling of the system $S$ with an ancillary two-mode system of the same kind of S via a density-density interaction, we enhance the resilience of the system NOON state, a quantum-mechanical many-body entangled state crucial for quantum computing. We further explore potential experimental implementations of the proposed noise cancellation technique, focusing on configurations involving dipole-dipole interactions in optical lattices. Finally, we propose a numerical optimization protocol that learns the system A and its interaction with S to maximize the survival probability of specific quantum states which can be potentially used in more generic quantum systems.

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