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Materials

Demultiplexer of Multi-Order Correlation Interference in Nitrogen Vacancy Center Diamond

Xinghua Li, Faizan Raza, Yufeng Li, Jinnan Wang, Jinhao Wang, Hasnain Ali, Luyuan Wang, Yuan Zhao, Yanpeng Zhang

Published Nov 9, 2021• 0 citations
Publisher

Abstract

We reported the second- and third-order temporal interference of two non-degenerate pseudo-thermal sources in a nitrogen-vacancy center (NV−). The relationship between the indistinguishability of source and path alternatives is analyzed at low temperature. In this article, we demonstrate the switching between three-mode bunching and frequency beating effect controlled by the time offset and the frequency difference to realize optical demultiplexer. Our experimental results suggest the advanced technique achieves channel spacing and speed of the demultiplexer of about 96% and 17 ns, respectively. The proposed demultiplexer model will have potential applications in quantum computing and communication.

DOI
10.3390/ma14226745

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Fabricating electronics from solid-state quantum emitters is a promising strategy for the miniaturization and integration of electronic devices. However, the practical realization of solid-state quantum devices and circuits for signal transmission and processing at room temperature has remained challenging. Herein, we investigated the multi-bunching phenomenon by generating multi-order fluorescence from a pseudo-thermal source at room temperature using the nitrogen-vacancy (NV) center in diamond. We demonstrate the shift in time of multi-bunching by controlling the effect of dressing to realize logical gates and transistor switching operations. We also suggest the optimization of the time propagation delay (TPD) of the gate circuit by changing the boxcar gate position.
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Abstract Here we report on the damped cross-Rabi oscillations in the intensity noise correlation resulting from the destructive interference between two four-wave mixing (FWM) processes, controlled by dressing atomic coherence in a nitrogen-vacancy center in a diamond. Also, the relationship between the self-Rabi oscillation of temporal intensity and cross-Rabi oscillation is investigated at a low temperature. Additionally, we discuss the notion that cross-Rabi oscillation in correlated beams can be switched between FWM and second-order fluorescence.
Abstract We demonstrate the second- and third-order temporal correlation of two independent pseudo-thermal fluorescence (FL) sources. The two distinguishable sources become indistinguishable following the delay in Feynman’s path. The second- and third-order correlation demonstrates the strong bunching amplitude surrounded by variable oscillations and interfering side bands (beats). Specifically, three-photon bunching is overlapped by two-photon bunching, and further decomposed into multiple lower order correlation functions. Here, the strong interference arises from source and path indistinguishable terms (varying time offset, laser frequency and the bandwidth of FL sources); The support for this idea comes from Feynman’s path integral theory and sub wavelength interference for such kind of sources with appropriate detection schemes. Such phenomena may serve as modulation and carrier for quantum communication channels.