Generation of Maximally Entangled Long-Lived States with Giant Atoms in a Waveguide

Author(s)

Santos, Alan C. ; Bachelard, R.

• Document type: Journal article
• Source: Physical Review Letters; v. 130, n. 5, p. 6-pg., 2023-02-03.

Abstract

In this Letter, we show how to efficiently generate entanglement between two artificial giant atoms with photon-mediated interactions in a waveguide. Taking advantage of the adjustable decay processes of giant atoms into the waveguide and of the interference processes, spontaneous sudden birth of entanglement can be strongly enhanced with giant atoms. Highly entangled states can also be generated in the steady-state regime when the system is driven by a resonant classical field. We show that the statistics of the light emitted by the system can be used as a witness of the presence of entanglement in the system, since giant photon bunching is observed close to the regime of maximal entanglement. Given the degree of quantum correlations incoherently generated in this system, our results open a broad avenue for the generation of quantum correlations and manipulation of photon statistics in systems of giant atoms. (AU)

• FAPESP's process: 19/13143-0 - Cold atoms, photons, and quantum correlations
• Grantee: Celso Jorge Villas-Bôas
• Support Opportunities: Regular Research Grants
• FAPESP's process: 21/10224-0 - Quantum information processing with trapped Rydberg ions
• Grantee: Alan Costa dos Santos
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 19/22685-1 - Memory effect and the transition from weak to strong disorder
• Grantee: Alan Costa dos Santos
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 18/15554-5 - Transport and localization of light in two and three dimensions
• Grantee: Romain Pierre Marcel Bachelard
• Support Opportunities: Research Grants - Young Investigators Grants - Phase 2