Optical-nanofiber-based interface for single molecules

Abstract

Optical interfaces for quantum emitters are a prerequisite for implementing quantum networks. Here, we couple single molecules to the guided modes of an optical nanofiber. The molecules are embedded within a crystal that provides photostability and, due to the inhomogeneous broadening, a means to spectrally address single molecules. Single molecules are excited and detected solely via the nanofiber interface without the requirement of additional optical access. In this way, we realize a fully fiber-integrated system that is scalable and may become a versatile constituent for quantum hybrid systems.

Nanofiber-based high-Q microresonator for cryogenic applications

“…Moreover, our resonator is fully fiber-integrated and alignment-free. It is therefore suitable for a large variety of emitters [4,[44][45][46][47][48][49] and, thanks to its implementation in a cryogenic environment without any loss in transmission, might also be used for the implementation of quantum hybrid systems [50,51].…”

“…In order to avoid this problem, the phonons of the system have to be frozen out and the branching ratio of emission into the coherent zero-phonon line has to be maximized. Further, cryogenic temperatures may be required to be able to spectrally address individual solid state emitters in the case, where many are present in the same host system [4]. This calls for a cryo-compatible optical microresonator with high quality factor, Q, that selectively accelerates the desired optical transition via the Purcell effect [12][13][14][15].Here, we show that a fully fiber-based optical microresonator that consists of a tapered optical fiber with two integrated fiber Bragg gratings (FBGs) [16,17], as demonstrated in [18], can be employed at cryogenic temperatures.…”

Narrow and Stable Single Photon Emission from Dibenzoterrylene inpara‐Terphenyl Nanocrystals

“…Since then pentacene in pT has been used for numerous pioneering single molecule studies [19] . In addition, pT has been used as the host for other PAH molecules, such as terrylene [20,21] …”

Hybrid System of an Optical Nanofibre and a Single Quantum Dot Operated at Cryogenic Temperatures

“…Once a function has been implemented on a nanofibre, the function can be automatically integrated into fibre networks, since nanofibre guided modes evolve adiabatically to conventional fibre guided modes. Consequently, motivated by both physical and technical advantages, various hybrid systems of ONFs and quantum emitters have been developed for atoms 9 , molecules 10 and solid state emitters 11 – 13 . Using the hybrid systems, various novel quantum optical processes have been demonstrated so far, such as efficient photon channeling of spontaneous emission into fibre guided modes 14 , 15 , high optical density with small number of atoms 16 , 17 and atom trapping around a nanofibre 18 , 19 .…”