Entanglement Transfer from Bosonic Systems to Qubits

TL;DR

This paper investigates how entanglement can be transferred from bosonic systems to qubits through specific interactions, especially when the initial bosonic state is a statistical mixture with fixed particle number.

Contribution

It introduces a class of interactions that induce entanglement between initially separable qubits via bosonic systems, expanding understanding of entanglement transfer mechanisms.

Findings

Identifies conditions under which entanglement transfer occurs.

Analyzes the role of initial bosonic states with fixed particle number.

Provides a framework for entanglement generation in quantum systems.

Abstract

We study the entanglement of a pair of qubits resulting from their interaction with a bosonic system. Here we restrict our discussion to the case where the set of operators acting on different qubits commute. A special class of interactions inducing entanglement in an initially separable two qubit system is discussed. Our results apply to the case where the initial state of the bosonic system is represented by a statistical mixture of states with fixed particle number.