@inproceedings{b40fa3c28954440298dbe0159a10a6f8,
title = "Optimization of Partially Isolated Quantum Harmonic Oscillator Memory Systems by Mean Square Decoherence Time Criteria",
abstract = "This paper is concerned with open quantum harmonic oscillators with position-momentum system variables, whose internal dynamics and interaction with the environment are governed by linear quantum stochastic differential equations. A recently proposed approach to such systems as Heisenberg picture quantum memories exploits their ability to approximately retain initial conditions over a decoherence horizon. Using the quantum memory decoherence time defined previously in terms of a fidelity threshold on a weighted mean-square deviation of the system variables from their initial values, we apply this approach to a partially isolated subsystem of the oscillator, which is not directly affected by the external fields. The partial isolation leads to an appropriate system decomposition and a qualitatively different short-horizon asymptotic behaviour of the deviation, which yields a longer decoherence time in the high-fidelity limit. The resulting approximate decoherence time maximization over the energy parameters for improving the quantum memory performance is discussed for a coherent feedback interconnection of such systems.",
author = "Vladimirov, {Igor G.} and Petersen, {Ian R.}",
note = "{\textcopyright} 2025 IEEE.; 2025 Australian and New Zealand Control Conference, ANZCC 2025 ; Conference date: 30-01-2025 Through 31-01-2025",
year = "2025",
doi = "10.1109/ANZCC65042.2025.10873352",
language = "English",
series = "2025 Australian and New Zealand Control Conference, ANZCC 2025",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "64--69",
booktitle = "2025 Australian and New Zealand Control Conference, ANZCC 2025",
address = "United States",
}