Generating genuine multipartite entanglement via XY-interaction and via projective measurements

TL;DR

This paper explores methods to generate genuine multipartite entanglement in superconducting phase qubits using XY-interaction and projective measurements, employing a computable entanglement measure for the first time.

Contribution

It introduces a new approach to quantify genuine multipartite entanglement and compares it with existing methods based on projective measurements.

Findings

Successful generation of specific multipartite entangled states for 3 and 4 qubits.

Use of a computable measure of genuine multipartite entanglement.

Comparison of entanglement generation via XY-interaction and projective measurements.

Abstract

We have studied the generation of multipartite entangled states for the superconducting phase qubits. The experiments performed in this direction have the capacity to generate several specific multipartite entangled states for three and four qubits. Our studies are also important as we have used a computable measure of genuine multipartite entanglement whereas all previous studies analyzed certain probability amplitudes. As a comparison, we have reviewed the generation of multipartite entangled states via von Neumann projective measurements.