Generation of entanglement via squeezing on a tripartite-optomechanical system

TL;DR

This paper presents a method to control and generate entanglement in a tripartite optomechanical system by tuning squeezing parameters, revealing abrupt entanglement transitions and potential for creating entangled states without direct interaction.

Contribution

It introduces a novel strategy using squeezing to regulate and generate entanglement in a dispersive-hybrid system, including analysis of losses and future implementation prospects.

Findings

Entanglement can be abruptly suppressed or generated by tuning squeezing parameters.

Entangled states between qubit and cavity can be created without direct interaction.

Losses affect entanglement but the strategy remains viable.

Abstract

We introduce a new strategy to regulate the quantum entanglement in a dispersive-hybrid system where a qubit is directly coupled to a cavity and a resonator. A dramatic transition takes place by only tuning the squeezing parameters associated with the vibrational mode. As the squeezing amplitude becomes larger, the maximal entanglement abruptly falls to zero at specific squeezing phases. It is also possible to generate entanglement for bipartitions from the qubit-cavity-resonator system after applying this strategy. Entangled qubit-cavity states are created through squeezing, even though there is no direct interaction between them. We also analyze the effect of atomic, optical, and vibrational losses on the quantum entanglement. Finally, we discuss future realizations to implement all these ideas and promote further studies to generalize the concept of monogamy in tripartite systems outside qubit-composite states, in particular, $(2 \otimes 2 \otimes n)$-dimensional systems.