26 citations · 61 across the 12 of their papers we have counts for
12 papers
Picosecond synchronization of mode-locked lasers for metropolitan-scale quantum networks
Cory Nunn, Nijil Lal, Ivan Burenkov +4
We demonstrate picosecond-level synchronization of two actively mode-locked Ti:Sapphire lasers via the White Rabbit Precision Time Protocol (WR-PTP), tested over 120 km of deployed…
Engineering quantum states from a spatially structured quantum eraser
Carlo Schiano, Bereneice Sephton, Roberto Aiello +8
Quantum interference is a central resource in many quantum-enhanced tasks, from computation to communication protocols. While it usually occurs between identical input photons, qua…
Polarization-orbital angular momentum duality assisted entanglement observation for indistinguishable photons
Nijil Lal, Sarika Mishra, Anju Rani +3
Duality in the entanglement of identical particles manifests that entanglement in only one variable can be revealed at a time. We demonstrate this using polarization and orbital an…
Quantum key distribution with multiphoton pulses: An advantage
Ayan Biswas, Anindya Banerji, Nijil Lal +3
In this article, we introduce a quantum key distribution protocol for the line of sight channels based on coincidence measurements. We present a proof-of-concept implementation of…
Correlations in scattered perfect optical vortices
Patnala Vanitha, Nijil Lal, Anju Rani +2
We have studied correlations in the speckle patterns generated by the scattering of perfect optical vortex (POV) beams and used them for producing a new-class of coherence function…
Selective tuning of Hilbert spaces in states encoded with spatial modes of light
Ali Anwar, Nijil Lal, Shashi Prabhakar +1
Spatial modes of light directly give the most easily accessible degree of freedom that span an infinite dimensional Hilbert space. The higher dimensional spatial mode entanglement…
Observing sub-Poissonian statistics of twisted single photons using oscilloscope
Nijil Lal, Biveen Shajilal, Ali Anwar +2
Heralded single photon sources (HSPS) from spontaneous parametric down-conversion are widely used as single photon sources. We study the photon number statistics of an HSPS carryin…
Single photon sources with different spatial modes
Nijil Lal, Anindya Banerji, Ayan Biswas +2
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 photo…
Engineering of orbital angular momentum spectrum of down-converted photons with mode-invariant pump
Anindya Banerji, Ali Anwar, Hrushikesh Sable +2
In this article we investigate the orbital angular momentum spectrum of photons produced in parametric down conversion process. We study how the transverse profile of the pump mode…
Quantum Information with Even/Odd States of Orbital Angular Momentum of Light
Chithrabhanu Perumangatt, Nijil Lal, Ali Anwar +2
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 entang…
Pancharatnam phase in non-separable states of light
Chithrabhanu Perumangatt, Salla Gangi Reddy, Nijil Lal +3
We generate the non-separable state of polarization and orbital angular momentum (OAM) using a laser beam. The generated state undergoes a cyclic polarization evolution which intro…
Selecting the pre-detection characteristics for effective fiber coupling of entangled photon sources
Ali Anwar, Chithrabhanu P, Salla Gangi Reddy +2
Photon modes have an important role in characterizing the quantum sources of light. Proper coupling of various photon modes obtained in spontaneous parametric down conversion (SPDC…