Deterministic Generation of All-Photonic Quantum Repeaters from Solid-State Emitters

All-photonic quantum repeaters

Quantum communication holds promise for unconditionally secure transmission of secret messages and faithful transfer of unknown quantum states. Photons appear to be the medium of choice for quantum communication. Owing to photon losses, robust quantum communication over long lossy channels requires quantum repeaters. It is widely believed that a necessary and highly demanding requirement for qu...

Room-temperature solid state quantum emitters in the telecom range

range Yu Zhou, Ziyu Wang , Abdullah Rasmita, Sejeong Kim , Amanuel Berhane , Zoltán Bodrog, Giorgio Adamo , Adam Gali , Igor Aharonovich 2, 3 , Wei-bo Gao 1, 5* 1 Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore 2 School of Mathematical and Physical Sciences, University of Technology Sydney, Ulti...

Fully tuneable, Purcell-enhanced solid-state quantum emitters

Multi-photon processes in solid-state quantum emitters

In order to stimulate these systems into emitting photons, lasers are used to excite them to high-level excited states. These states relax, and in doing so release photons. This is called quasi-resonant excitation. The problem with this quasi-resonant excitation procedure is that it also excites the semiconductor solid-state environment surrounding the quantum dot. This can couple to the quantu...

Mesoscopic quantum emitters from deterministic aggregates of conjugated polymers.

An appealing definition of the term "molecule" arises from consideration of the nature of fluorescence, with discrete molecular entities emitting a stream of single photons. We address the question of how large a molecular object may become by growing deterministic aggregates from single conjugated polymer chains. Even particles containing dozens of individual chains still behave as single quan...