Von Neumann entropy in a dispersive cavity

• URL: http://arxiv.org/abs/2012.05910v2
• Date: Thu, 30 Sep 2021 15:40:07 GMT
• Title: Von Neumann entropy in a dispersive cavity
• Authors: Ram Narayan Deb
• Abstract summary: We study the von Neumann entropy of the partial trace of a system of two two-level atoms (qubits) in a dispersive cavity. We find a close relationship between this von Neumann entropy and the spin squeezing of the system.
• Score: 0.0
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: We study the von Neumann entropy of the partial trace of a system of two two-level atoms (qubits) in a dispersive cavity where the atoms are interacting collectively with a single mode electromagnetic field in the cavity. We make a contrast of this entanglement entropy with the spin squeezing property of the system. We find a close relationship between this von Neumann entropy and the spin squeezing of the system. We observe that this entanglement entropy attains its maximum value when the spin squeezing in the system goes to its maximum and is zero when the spin squeezing in the system vanishes.

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