Interfacing superconducting qubits and single optical photons using molecules in waveguides

TL;DR

This paper proposes a hybrid system using molecules in waveguides to enable efficient, low-light-level optical interfaces with superconducting qubits, facilitating high-fidelity entanglement at the single-photon level.

Contribution

It introduces a novel hybrid architecture combining organic molecules and superconducting qubits for coherent optical interfacing at optical frequencies.

Findings

High-fidelity entanglement between distant superconducting qubits is achievable.

The system operates effectively at the single-photon level, minimizing decoherence.

The proposed interface is efficient and suitable for quantum communication applications.

Abstract

We propose an efficient light-matter interface at optical frequencies between a single photon and a superconducting qubit. The desired interface is based on a hybrid architecture composed of an organic molecule embedded inside an optical waveguide and electrically coupled to a superconducting qubit placed near the outside surface of the waveguide. We show that high fidelity, photon-mediated, entanglement between distant superconducting qubits can be achieved with incident pulses at the single photon level. Such a low light level is highly desirable for achieving a coherent optical interface with superconducting qubit, since it minimizes decoherence arising from the absorption of light.