Polarization dynamics of solid-state quantum emitters
- URL: http://arxiv.org/abs/2303.04732v2
- Date: Mon, 26 Feb 2024 11:23:07 GMT
- Title: Polarization dynamics of solid-state quantum emitters
- Authors: Anand Kumar, \c{C}a\u{g}lar Samaner, Chanaprom Cholsuk, Tjorben
Matthes, Serkan Pa\c{c}al, Ya\u{g}{\i}z Oyun, Ashkan Zand, Robert J. Chapman,
Gr\'egoire Saerens, Rachel Grange, Sujin Suwanna, Serkan Ate\c{s}, Tobias
Vogl
- Abstract summary: Quantum emitters in solid-state crystals have attracted a lot of attention due to their simple applicability in optical quantum technologies.
polarization of single photons generated by quantum emitters is one of the key parameters that play a crucial role in the applications.
- Score: 32.54627168659622
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum emitters in solid-state crystals have recently attracted a lot of
attention due to their simple applicability in optical quantum technologies.
The polarization of single photons generated by quantum emitters is one of the
key parameters that play a crucial role in the applications, such as quantum
computation that uses the indistinguishability of photons. However, the degree
of single photon polarization is typically quantified using time-averaged
photoluminescence intensity of single emitters, which provides limited
information about the dipole properties in solids. In this work, we use single
defects in hexagonal boron nitride and nanodiamond as efficient
room-temperature single photon sources to reveal the origin and the temporal
evolution of dipole orientation in solid-state quantum emitters. The angle of
excitation and emission dipoles relative to the crystal axes are determined
experimentally and then calculated using density functional theory, which
results in characteristic angles for every specific defect that can be used as
an efficient tool for defect identification and understanding their atomic
structure. Moreover, the temporal polarization dynamics reveal a strongly
modified linear polarization visibility that depends on the excited state decay
time of individual excitation. This effect can be traced back potentially to
the excitation of excess charges in the local crystal environment.
Understanding such hidden time-dependent mechanisms can further be used to
improve the performance of polarization-sensitive experiments, in particular
that of quantum communication with single photon emitters.
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