Review on coherent quantum emitters in hexagonal boron nitride
- URL: http://arxiv.org/abs/2201.13184v1
- Date: Mon, 31 Jan 2022 12:49:43 GMT
- Title: Review on coherent quantum emitters in hexagonal boron nitride
- Authors: Alexander Kubanek
- Abstract summary: I discuss the state-of-the-art of defect centers in hexagonal boron nitride with a focus on optically coherent defect centers.
The spectral transition linewidth remains unusually narrow even at room temperature.
The field is put into a broad perspective with impact on quantum technology such as quantum optics, quantum photonics as well as spin optomechanics.
- Score: 91.3755431537592
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Hexagonal boron nitride is an emerging two-dimensional material with
far-reaching applications in fields like nanophotonics or nanomechanics. Its
layered architecture plays a key role for new materials such as Van der Waals
heterostructures. The layered structure has also unique implications for
hosted, optically active defect centers. A very special type of defect center
arises from the possibility to host mechanically isolated orbitals localized
between the layers. The resulting absence of coupling to low-frequency acoustic
phonons turns out to be the essential element to protect the coherence of
optical transitions from mechanical interactions with the environment.
Consequently, the spectral transition linewidth remains unusually narrow even
at room temperature, thus paving a new way towards coherent quantum optics
under ambient conditions. In this review, I summarize the state-of-the-art of
defect centers in hexagonal boron nitride with a focus on optically coherent
defect centers. I discuss the current understanding of the defect centers,
remaining questions and potential research directions to overcome pervasive
challenges. The field is put into a broad perspective with impact on quantum
technology such as quantum optics, quantum photonics as well as spin
optomechanics.
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