International Journal of Physics | Vol. 15, No. 7, July 2024 | pp. 49–56
DOI: 10.46882/2024/IJP/000171
Research Article
Title: Quantum Entanglement Kinetics and Decoherence Suppressions in Coupled Five-Level Quantum Dot Lattices
Names of Authors: S. H. Zhang¹, J. W. Park²
Authors’ Affiliations:
¹ Department of Physics, Tsinghua University, Beijing, China
² Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
Abstract: Defending non-classical quantum state correlations from environmental phase relaxation pathways is a vital hurdle for constructing reliable solid-state quantum memory registers and scalable quantum computing networks. This paper investigates the time-dependent kinetic evolution of quantum entanglement and presents active decoherence suppression strategies within coupled five-level semiconductor quantum dot lattices. The architecture models an array coupled to a customized optical microcavity and interacting with a discrete thermal acoustic phonon bath. We solved the density matrix master equations using an algebraic operator framework matching the Lindblad dissipation rules at a cryogenic operating temperature of 4.2 K. The calculations demonstrate that configuring the laser fields under multi-channel quantum interference conditions effectively decouples the electronic states from radiative cavity mirror paths. This isolation sustains stable bipartite entanglement across continuous runtime blocks exceeding 22.0 ns, preserving a concurrence index above 0.86. We simulated a periodic dynamical pulse sequence that dampens low-frequency charge noise channels. This optimization yields a target quantum gate fidelity calculation of 99.4% ± 0.2%, assisting solid-state design.
Keywords: Quantum entanglement; quantum dots; Lindblad master equation; dynamical decoupling; quantum optics; quantum computing
Manuscript Timeline: Received: April 15, 2024; Revised: June 02, 2024; Accepted: June 22, 2024; Published: July 15, 2024
Citation: Zhang, S. H., & Park, J. W. (2024). Quantum Entanglement Kinetics and Decoherence Suppressions in Coupled Five-Level Quantum Dot Lattices. International Journal of Physics, 15(7), 49–56.
Subscribe to read the full article: https://internationalscholarsjournals.org/subscribe-to-read