Project: Entanglement Enhanced Qubit Generation for Quantum Informatics (Q-86)
Institute: Indian Institute of Technology (IIT), Delhi
Principal Investigator: Dr. Bhaskar Kanseri
Co-Principal Investigator: Dr. R. Jothi Ramalingam
Partially spatially coherent light beams are more robust against atmospheric losses and turbulence compared to fully coherent beams during propagation through free-space and random media. The present proposal is devoted to develop a two-qubit entangled photon source for quantum informatics having partial spatial coherence properties. It aims to study the spatial and spectral profiles, correlation, and entanglement properties of twin photons generated by spontaneous parametric down conversion process using partially coherent pump beam.
Finally this partially coherent entangled two-qubit source would be used for laboratory scale entanglement distribution studies. These two-qubit states of photons, prepared by partially coherent pump, are expected to get less affected by atmospheric turbulence than the two-qubit states prepared by fully coherent pump beam, thus becoming a potentially useful candidate for quantum information applications.
Publications from this project:
S.No. |
Title of the Paper |
Journal/Issue |
Authors |
|---|---|---|---|
| 1. | Effect of partially coherent pump on the spatial and spectral profiles of down-converted photons | JOSA B 37, 505 (2020) | Bhaskar Kanseri, Preeti Sharma |
| 2. | Development and characterization of a source having tunable partial spatial coherence and polarization features | Optik 206, 163747 (2020) | Bhaskar Kanseri, Hemant Kumar |
| 3. | Spatial coherence properties of down converted biphoton field generated using partially coherent pump beam | Optik 217, 164941 (2020) | Stuti Joshi, Bhaskar Kanseri |
| 4. | Statistical properties of partially coherent polarization singular vector beams | Phys. Rev. A 103, 053502 | Stuti Joshi, Saba N. Khan, P. Senthilkumaran, and Bhaskar Kanseri |
| 5. | Modulations in Stokes parameters due to electromagnetic longitudinal spatio-temporal coherence | Journal of Optics 23, 105604 (2021) | G. Arya, Sethuraj KR and B. Kanseri |
| 6. | Controlling polarization entanglement in biphotons generated with partially spatially coherent pump beam | Results in Physics Volume 27, August 2021, 104506 | Preeti Sharma, Nishant Kumar Pathak, Bhaskar Kanseri |
| 7. | Statistical features of an electromagnetic Gaussian–Schell model beam propagating through a smoke aerosol environment | Applied Optics Vol. 61, 5, 1125-1132 (2022) | Hemant Kumar Singh, Deepa Joshi, and Bhaskar Kanseri |
| 8. | Mueller-matrix for non-ideal beam-splitters to ease the analysis of vectorial optical fields | Journal of Optics and Laser Technology 154, 108288 (2022) | Sethuraj KR, R. Joshi and B. Kanseri |
| 9. | Investigation of quadrature squeezing in parametric downconversion with a partially coherent pump | Journal of the Optical Society of America B Vol. 39, Issue 8, pp. 2280-2288 (2022) | Sakshi Rao, Preeti Sharma, and Bhaskar Kanseri |
| 10. | Investigation of partially coherent vector vortex beams with non-isotropic states of spatial correlation | Optics Express Vol. 30, Issue 18, pp. 32230-32243 (2022) | Manisha, Stuti Joshi, Saba N Khan, Bhaskar Kanseri, and P Senthilkumaran |
| 11. | Experimental investigation of degree of cross-polarization for an electromagnetic Gaussian-Schell model beam | Journal of the Optical Society of America A Vol. 39, Issue 12, pp. C98-C104 (2022) | Hemant Kumar Singh and Bhaskar Kanseri |
| 12. | Tuning of the Stokes scintillations by controlling the longitudinal coherence | Optics & Laser Technology, Volume 160, May 2023, 109067 | G. Arya, HK. Singh and B.Kanseri |
| 13. | Determination of Stokes fluctuations and Stokes scintillations for an electromagnetic beam | Journal of Optics, Volume 25, 014001 (2023) | Hemant Kumar Singh, Gaytri Arya and Bhaskar Kanseri |
| 14. | Propagation-induced changes in non-isotropically correlated vector vortex beams | Journal of Optics, Volume 25, Number 6, 25 065601 | Manisha, Saba N Khan, Stuti Joshi, P Senthilkumaran1, and Bhaskar Kanseri |
| 15. | Tuning of the Stokes scintillations by controlling the longitudinal coherence | Optics & Laser Technology Volume 160, May 2023, 109067 | G. Arya, P. Sharma and B. Kanseri |
| 16. | Experimental generation and characterization of partially spatially coherent qubits | Physica Scripta, Volume 98, Number 6, 98 065115 | Preeti Sharma, Sakshi Rao and Bhaskar Kanseri |