Quantum computing with a single molecular ensemble and a Cooper pair box

TL;DR

This paper proposes a method to encode quantum information in molecular rotational states and transfer it via a stripline cavity to a Cooper pair box, enabling scalable quantum registers.

Contribution

It introduces a novel approach combining molecular ensembles and superconducting qubits for scalable quantum information processing.

Findings

Linear scaling of qubits with available rotational states

Efficient quantum state transfer between molecules and Cooper pair box

Potential for scalable quantum computing architectures

Abstract

We propose to encode quantum information in rotational excitations in a molecular ensemble. Using a stripline cavity field for quantum state transfer between the molecular ensemble and a Cooper pair box two-level system, our proposal offers a linear scaling of the number of qubits in our register with the number of rotationally excited states available in the molecules.