Ferroelectric modulation of quantum emitters in monolayer WS_2
arxiv(2024)
Abstract
Quantum photonics promises significant advances in secure communications,
metrology, sensing and information processing/computation. Single photon
sources are fundamental to this endeavor. However, the lack of high quality
single photon sources remains a significant obstacle. We present here a new
paradigm for the control of single photon emitters (SPEs) and single photon
purity by integrating monolayer WS_2 with the organic ferroelectric polymer
poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)). We demonstrate
that the ferroelectric domains in the P(VDF-TrFE) film control the purity of
single photon emission from the adjacent WS_2. By switching the ferroelectric
polarization, we reversibly tune the single photon purity between the
semi-classical and quantum light regimes, with single photon purities as high
as 94
photonic information, complementing more complex approaches. This novel
multidimensional heterostructure introduces a new avenue for control of quantum
emitters by combining the nonvolatile ferroic properties of a ferroelectric
with the radiative properties of the zero-dimensional atomic scale emitters
embedded in the two-dimensional WS_2 semiconductor monolayer.
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