Multipartite high-dimensional entangled state generation through soliton-induced dynamical Casimir effect on a chip

TL;DR

This paper demonstrates an integrated photonic method to generate multipartite high-dimensional entangled states in microwave and terahertz regimes using soliton-induced dynamical Casimir effect on a chip.

Contribution

It introduces a novel scheme combining optical solitons and dynamical Casimir effect for on-chip generation of complex entangled quantum states.

Findings

Successful generation of multipartite high-dimensional entangled states.

Demonstration of photon-pair generation via Kerr-induced modulation.

Potential for scalable quantum information processing on integrated platforms.

Abstract

An integrated photonic approach for complex quantum state generation through dynamical Casimir effect (DCE) is demonstrated. This approach provides a scheme to realize multipartite high-dimensional entangled states in the microwave (MW) and terahertz (THz) regimes, through the modulation in a MW-resonator coupled to an optical microresonator supporting temporal optical solitons. The states at the MW-resonator evolve from the ground state, realizing real-photons from the virtual photons at the ground state. The periodic modulation of the MW-resonator through a Kerr-induced refractive index change in the optical microresonator, along with the localized spatial distribution of the dissipative Kerr solitons (DKSs), enables photon-pair generation and inter-mode coupling at the MW-resonator. This allows generating highly persistent multipartite high-dimensional entangled states in a wide range of spectrum. The proposed approach paves the way for a hybrid integrated platform for generation of multipartite entangled qudits (high-dimensional qubits) at the MW and THz regimes using highly coherent ultra-short optical pulses in a monolithic integrated platform. This architecture can act as an entangled state source, as a necessary resource for exploiting a wide range of quantum protocols from fault-tolerant computing to enhanced sensing and teleportation.