Electrical Charge Control of h-BN Single Photon Sources
- URL: http://arxiv.org/abs/2202.09037v2
- Date: Thu, 9 Jun 2022 08:19:00 GMT
- Title: Electrical Charge Control of h-BN Single Photon Sources
- Authors: Mihyang Yu, Donggyu Yim, Hosung Seo and Jieun Lee
- Abstract summary: We show the electrical switching of the photoluminescence from h-BN quantum emitters using a voltage.
Our result paves the way for the van der Waals colour centre based photonic quantum information processing, cryptography and memory applications.
- Score: 1.7587442088965224
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Colour centres of hexagonal boron nitride (h-BN) have been discovered as
promising and practical single photon sources due to their high brightness and
narrow spectral linewidth at room-temperature. In order to realize h-BN based
photonic quantum communications, the ability to electrically activate the
single photon fluorescence using an external electric field is crucial. In this
work, we show the electrical switching of the photoluminescence from h-BN
quantum emitters, enabled by the controllable electron transfer from the nearby
charge reservoir. By tuning the Fermi level of graphene next to the h-BN
defects, we observed luminescence brightening of a quantum emitter upon the
application of a voltage due to the direct charge state manipulation. In
addition, the correlation measurement of the single photon sources with the
graphene's Raman spectroscopy allows us to extract the exact charge transition
level of quantum emitters, providing the information on the crystallographic
nature of the defect structure. With the complete on-off switching of emission
intensity of h-BN quantum emitters using a voltage, our result paves the way
for the van der Waals colour centre based photonic quantum information
processing, cryptography and memory applications.
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