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  • Aadhi, A.; Apurv Chaitanya, N.; Jabir, M. V.; Vaity, Pravin; Singh, R. P.; Samanta, Goutam Kumar (Nature publishing group, 2016-05)
    Airy beam, a non-diffracting waveform, has peculiar properties of self-healing and self-acceleration. Due to such unique properties, the Airy beam finds many applications including curved plasma wave-guiding, micro-particle ...
  • Perumangatt, Chithrabhanu; Aadhi, A.; Reddy, Salla Gangi; Prabhakar, Shashi; Singh, R. P. (World Scientific Publishing, 2016-09)
    Using classical laser beams, we generate a general complex superposition state, cebit, of orbital angular momentum (OAM) of light. We use a nonseparable beam of polarization and OAM generated by a modified Sagnac interferometer ...
  • Aadhi, A.; Vaity, Pravin; Apurv Chaitanya, N.; Jabir, M. V.; Singh, R. P.; Samanta, Goutam Kumar (2016-01-05)
  • Srinivas, P.; Perumangatt, Chithrabhanu; Lal, Nijil; Singh, R. P.; Srinivasan, B. (Optical Society of America, 2018-06)
    In this Letter, we experimentally investigate the propagation dynamics of truncated vector vortex beams generated using a Sagnac interferometer. Upon focusing, the truncated vector vortex beam is found to regain its original ...
  • Lal, Nijil; Shajilal, Biveen; Anwar, Ali; Perumangatt, Chithrabhanu; Singh, R. P. (Cornell University Library, 2019-07)
  • Lal, Nijil; Shajilal, Biveen; Anwar, Ali; Perumangatt, Chithrabhanu; Singh, R. P. (AIP Publishing, 2019-11)
    Heralded single photon sources (HSPSs) from spontaneous parametric down-conversion are widely used as single photon sources. We study the photon number statistics of an HSPS carrying orbital angular momentum in our laboratory ...
  • Lal, Nijil; Chithrabhanu, P.; Gangi Reddy, Salla; Anwar, Ali; Aadhi, A.; Singh, R. P. (Optical Society of America, 2016)
    We generate the non-separable state of polarization and orbital angular momentum using a laser beam. The generated state undergoes a cyclic polarization evolution which introduces a Pancharatnam geometric phase to the ...
  • Lal, Nijil; Banerji, Anindya; Biswas, Ayan; Anwar, Ali; Singh, R. P. (Taylor & Francis, 2019-12)
    We study the correlation properties of single photons carrying orbital angular momentum (OAM) in a Hanbury Brown and Twiss (HBT) type experiment. We have characterized single photon sources obtained by pumping a nonlinear ...
  • Perumangatt, Chithrabhanu; Lal, Nijil; Anwar, Ali; Reddy, Salla Gangi; Singh, R. P. (Elsevier, 2017-06)
    We address the possibility of using even/odd states of orbital angular momentum (OAM) of photons for the quantum information tasks. Single photon qubit states and two photon entangled states in even/odd basis of OAM are ...
  • Perumangatt, Chithrabhanu; Lal, Nijil; Anwar, Ali; Reddy, Salla Gangi; Singh, R. P. (Cornell University Library, 2016-07)
    We address the possibility of using even/odd states of orbital angular momentum (OAM) of photons for the quantum information tasks. Single photon qubit states and two photon entangled states in even/odd basis of OAM are ...
  • Lal, Nijil; Banerji, Anindya; Biswas, Ayan; Anwar, Ali; Singh, R. P. (Cornell University Library, 2019-05)
    We study the correlation properties of single photons carrying orbital angular momentum (OAM) in a Hanbury Brown and Twiss (HBT) type experiment. We have characterized single photon sources obtained by pumping a nonlinear ...
  • Sharma, Varun; Samanta, G. K.; Chaitanya Kumar, S.; Singh, R. P.; Ebrahim-Zadeh, M. (Optical Society of America, 2019-10)
    We report a continuous-wave (cw) optical parametric oscillator (OPO) generating optical vortices tunable in the ultraviolet (UV). Based on MgO:sPPLT as the nonlinear crystal, the singly resonant OPO is pumped by a cw vortex ...

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