# Entanglement between a Two-Level System and a Quantum Harmonic Oscillator

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This Demonstration shows the time-evolution (the Glauber-Sudarshan representation of the oscillator over time) and the participation ratio (a measure of the entanglement) of a system that consists of a quantum harmonic oscillator coupled with a delta pulse applied to a two-level system. The system is originally unentangled and in thermal equilibrium with the environment. The parameter , the decoherence parameter, depends on the strength of the coupling of the system with a Markovian bath.

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Contributed by: Kwan-yuet Ho (February 2008)

Open content licensed under CC BY-NC-SA

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For more information, see: the article on arXiv.