研究目的
Demonstrating the tunable quantum beat of single photons through the co-development of core nonlinear nanophotonic technologies for frequency-domain manipulation of quantum states in a common physical platform.
研究成果
The work demonstrates the generation and frequency conversion of quantum states of light in a nonlinear nanophotonic platform, showcasing the potential of nanophotonic QFC as an enabling technology for realizing high-quality quantum interference needed for various applications.
研究不足
The presence of Raman noise limits the pair-source CAR values to around 30, and the additional noise from the frequency converter is significant if the input photon flux is comparable to the frequency-conversion noise.
1：Experimental Design and Method Selection:
The experiment involves the use of spontaneous four-wave mixing in a nonlinear resonator to produce nondegenerate, quantum-correlated photon pairs, followed by frequency shifting one photon from each pair using four-wave-mixing Bragg scattering in a second nonlinear resonator.
2：Sample Selection and Data Sources:
Photon pairs are generated in a Si3N4 microring resonator, with one photon from each pair frequency shifted in a second Si3N4 microring.
3：List of Experimental Equipment and Materials:
Si3N4 microring resonators, superconducting single-photon detectors, bandpass filters, and thermoelectric controllers are used.
4：Experimental Procedures and Operational Workflow:
Photon pairs are generated and one photon is frequency shifted before both are impinged on a beam splitter to observe quantum interference.
5：Data Analysis Methods:
The coincidence counting measurement is used to analyze the quantum interference of the two photons.
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