Quantum Optimal Control for Pure-State Preparation Using One Initial State

• URL: http://arxiv.org/abs/2106.09148v2
• Date: Fri, 13 Aug 2021 02:07:58 GMT
• Title: Quantum Optimal Control for Pure-State Preparation Using One Initial State
• Authors: Stefanie G\"unther, N. Anders Petersson, Jonathan L. DuBois
• Abstract summary: This paper presents a framework for solving the pure-state preparation problem using numerical optimal control. We consider the case where a number of qubits are dispersively coupled to a readout cavity.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: This paper presents a framework for solving the pure-state preparation problem using numerical optimal control. As an example, we consider the case where a number of qubits are dispersively coupled to a readout cavity. We model open system quantum dynamics using the Markovian Lindblad master equation, driven by external control pulses. The main result of this paper develops a basis of density matrices (a parameterization) where each basis element is a density matrix itself. Utilizing a specific objective function, we show how an ensemble of the basis elements can be used as a single initial state throughout the optimization process - independent of the system dimension. We apply the general framework to the specific application of ground-state reset of one and two qubits coupled to a readout cavity.

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