Related papers: Generation of time-frequency entangled photon pairs propagating in separate waveguides in circuit QED setup

Generation of time-frequency entangled photon pairs propagating in separate waveguides in circuit QED setup

URL: http://arxiv.org/abs/2207.08289v2
Date: Wed, 16 Nov 2022 17:06:24 GMT
Title: Generation of time-frequency entangled photon pairs propagating in separate waveguides in circuit QED setup
Authors: Eugene Stolyarov
Abstract summary: We propose a generic cavity QED setup designed for on-demand generation of time-frequency entangled photon pairs. We numerically solve the set of equations of motion governing the evolution of the quantum state of the system. We compute the entanglement entropy analyzing its dependence on the system parameters.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Time-frequency entangled photons constitute an important resource for a plethora of applications across the diverse quantum technology landscape. Thus, efficient and tunable setups for the generation of entangled photons are requisite for modern quantum technologies. In this work, we propose a generic cavity QED setup designed for on-demand generation of time-frequency entangled photon pairs, with each photon propagating in a separate waveguide. We outline a potential incarnation of this setup in the microwave superconducting circuit QED architecture. We derive and numerically solve the set of equations of motion governing the evolution of the quantum state of the system, allowing us to examine the photon emission dynamics. Using the Schmidt decomposition of the joint spectral amplitude of the emitted photon pair, we compute the entanglement entropy analyzing its dependence on the system parameters. We outline the potential extension of the proposed scheme for the generation of multiphoton time-frequency entangled states.