Entanglement of two optical emitters mediated by a terahertz channel

Entanglement stabilization of two optical emitters mediated by a terahertz channel. 
This repository contains Jupyter notebooks with the codes necessary to reproduce the results in the paper "Entanglement of two optical emitters mediated by a terahertz channel".

How to use

Installation

- Clone this directory
- cd to the current folder `ThzEntanglement`
- (Recommended) Use a version of Julia 1.12.x

- Install the `THzEntanglement` as an editable Julia package with its dependencies

julia
]
activate .
instantiate

Notebooks

[1-thz_spectrum]

Generate the THz spectrum of the second dressing of the qubit via activation of a sideband laser.

[2-optical_variation]

Generate the concurrence and two-photon correlation map for a given set of parameter for a variation of carrier Rabi frequencies. Computation of the optical and THz spectrum associated to carrier Rabi frequencies. Example of the Concurrence and Liouvillian gap tradeoff.

 [3-concurrence_optimization]

Illustrate the maximization of the concurrence for the optimization of the two doubly dressed parameters.

[4-tomography]

Examples of QST using linear inversion and removal of negative eigenvalues. Application to those methods using one of the maximzed concurrence setup.

Scripts

[optimization]

Maximize the concurrence by optimizing over the two doubly dressed parameters. The optimization is done using the GRWA framework (or using  rwa_cav_hamiltonian dyanmics). This script will generate a JLD2 file to store the data.

 [verification]

Verify the results of the optimization with the full_hamiltonian model. This script will generate a JLD2 file to store the data.

Contact

Feel free to contact me to discuss any issues, questions or comments.
- GitHub: YanisLeFur
- Email: yanis.lefur@gmail.com