Quantum Bus of Metal Nanowire with Surface Plasmon Polaritons

TL;DR

This paper proposes a scalable quantum computing architecture utilizing a plasmonic quantum bus based on metal nanowires and surface plasmon polaritons to enable deterministic gates between distant spin qubits.

Contribution

It introduces a novel architecture combining plasmonic circuits with spin qubits for distributed quantum computation, leveraging adiabatic coupling in metallic nanowires.

Findings

Deterministic quantum gates between distant spin qubits achieved.

Robust and scalable platform for quantum networks developed.

Potential for on-chip quantum optics experiments demonstrated.

Abstract

We develop an architecture for distributed quantum computation using quantum bus of plasmonic circuits and spin qubits in self-assembled quantum dots. Deterministic quantum gates between two distant spin qubits can be reached by using an adiabatic approach in which quantum dots couple with highly detuned plasmon modes in a metallic nanowire. Plasmonic quantum bus offers a robust and scalable platform for quantum optics experiments and the development of on-chip quantum networks composed of various quantum nodes, such as quantum dots, molecules and nanoparticles.