Optimal control of quantum gates in an exactly solvable non-Markovian open quantum bit system
Journal
Physical Review A - Atomic, Molecular, and Optical Physics
Journal Volume
89
Journal Issue
6
Date Issued
2014
Author(s)
Abstract
We apply quantum optimal control theory (QOCT) to an exactly solvable non-Markovian open quantum bit (qubit) system to achieve state-independent quantum control and construct high-fidelity quantum gates for moderate qubit decaying parameters. An important quantity, improvement I, is proposed and defined to quantify the correction of gate errors due to the QOCT iteration when the environment effects are taken into account. With the help of the exact dynamics, we explore how the gate error is corrected in the open qubit system and determine the conditions for significant improvement. The model adopted in this paper can be implemented experimentally in realistic systems such as the circuit QED system. © 2014 American Physical Society.
Type
journal article