Update research.md

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 Our group conducts groundbreaking research to advance the fields of quantum communications, quantum optics, metrology, and optical sensing. We have lab members with diverse backgrounds and interests, working together on different physics and engineering problems. The research we conduct is divided into 3 subgroups -  Quantum entanglement, Quantum communication, Optical sensing.
 
-**Quantum Entanglement** 
+### Quantum Entanglement 
 
 Entanglement, the phenomenon where characteristics of a particle are correlated with characteristics of other particles regardless of their physical separation, is the foundation of many quantum information technologies.  In our lab, we are building practical, room-temperature entangled photon sources for future quantum communication networks. Based off type-II spontaneous parametric down-conversion in periodically poled silica fiber, the entangled photons in our sources are generated completely in optical fiber, allowing for low loss integration with existing telecommunication networks. We have produced separate broadband sources centered at the minimum attenuation wavelength of optical fibers, 1550nm, as well as the zero-dispersion wavelength, 1300nm.