Silicon-based on-chip quantum light sources in telecom and visible bands 

Broadband frequency-entangled photon pairs, spectrally-pure heralded single photons, polarization-entangled photon pairs, effect of losses on the biphoton correlations

Students: Vijay (PhD), Shivani Sharma (PhD), Pravin Rawat (MTech), Vivek Kumar (MTech)

Near-resonant light-matter interactions in thermal Rb vapour 

Rate equation modeling for Doppler-broadened and Doppler-free spectra to understand interplay of hyperfine and Zeeman pumping in open and closed transitions; exploring quantum nonlinear effects

Students: Abhishek Dutta (PhD), Rajni Bala (PhD)

PPLN waveguide based fiber-integrated quantum photonics

Type-0 SPDC based broadband source of polarization-entangled photon-pairs at telecom wavelengths for fiber-based quantum networks, cascaded-second-order nonlinear process for tunable telecom photon pairs

Students: Khushboo (PhD), Vikash Kumar Yadav (PhD), Ashish Samantaray (IISER-K, MS), Samyak Gothi (BTech)

ppKTP crystal based free-space quantum sources

Type-II SPDC (spontaneous parametric down conversion) based hybrid-entangled photon sources for free-space quantum communication

Students: Nilesh Tiwari (PhD), Omshankar (PhD), Wasim Ahamed (MTech)

Space-time duality based optical signal processing

Exploration of time-lens based optical pulse shaping and temporal cloaking; electro-optic frequency comb sources

Students: Dixit Kumar (PhD), several MTech

Nonlinear photonics based broadband coherent light sources

Fiber-based and on-chip integrated supercontinuum and optical frequency comb sources

Students: Several MTech & BTech