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Quantum Optics and Entanglement Lab

Prof. Anand K. Jha

Department of Physics, IIT Kanpur

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Publications

  1. Super-resolution Imaging of Azimuthal Features with Illumination Carrying OAM; Nilakshi Senapati, Abhinandan Bhattacharjee, Kedar Khare and Anand K Jha; Applied Physics Letters 128, 181107 (2026). [PDF] [Supplementary]
  2. Patent: A Phase-shifting wavefront-inversion interferometer and method for measuring complex spatial coherence; Anand K Jha and Pranay Mohta; Application No. 202511034237 ; Granted Indian Patent No. 584790. [Filed on 08/04/2025]. [PDF]
  3. Noise-resilient imaging through coherence filtering; Pranay Mohta, Keval Moliya, Aniket Nag, Shaurya Aarav and Anand K Jha; Phys. Rev. Applied 25, 034001 (2026). [PDF] [Supplementary]
  4. Complex Spatial Coherence Measurement using Phase-Shifting Wavefront-Inversion Interferometry; Pranay Mohta, Abhinandan Bhattacharjee and Anand K Jha; Journal of Optics 27 075606 (2025). [PDF]
  5. Broadband uniform-efficiency OAM-mode detector; Suman Karan, Martin Van Exter and Anand K Jha; Science Advances 11, eadq7201 (2025). [PDF] [Supplementary]
  6. An experimental technique for measuring radial coherence; Radhika Prasad, Nilakshi Senapati, Suman Karan, Abhinandan Bhattacharjee, Bruno Piccirillo, Miguel A. Alonso and Anand K Jha; Optics Express 33, 11693-11701 (2025). [PDF]
  7. An experimental technique for measuring radial coherence; Radhika Prasad, Nilakshi Senapati, Suman Karan and Anand K Jha; Application No. 202411102457 ; In Process. [Filed on 24-Dec-2024]
  8. Patent: Broadband uniform-efficiency orbital angular momentum detector for quantum technologies; Suman Karan and Anand K Jha; Application No. 202411014104 ; Granted Indian Patent No. 551808. [Filed on 27-feb-2024]. [PDF]
  9. Structured position-momentum-entangled two-photon fields; Radhika Prasad, Sanjana Wanare, Suman Karan, Mritunjay K Joshi, Abhinandan Bhattacharjee and Anand K Jha; Physical Review Applied 22, 064034 (2024). [PDF]
  10. Wavefront rotator with near-zero mean polarization change; Suman Karan, Nilakshi Senapati, and Anand K Jha; Applied Optics 63, 4552-4557 (2024). [PDF]
  11. Patent: Wavefront rotator with near-zero mean polarization change; Suman Karan and Anand K Jha; Application No. 202411014104 ; Granted Indian Patent No. 557357. [Filed on 27-feb-2024]. [PDF]
  12. Postselection-free controlled generation of a high-dimensional orbital-angular-momentum entangled state; Suman Karan, Radhika Prasad, and Anand K Jha; Physical Review Applied 20, 054027 (2023). [PDF]
  13. Coherence in the radial degree of freedom; A. Bhattacharjee, S. Biswas, M. A. Alonso, and A. K. Jha; JOSAA 40, 411 (2023). [PDF]
  14. Quantifying polarization changes induced by rotating Dove prisms and K-mirros.; S. Karan, Ruchi, P. Mohta, and A. K. Jha; Applied Optics, 61, 8302 (2022). [PDF] - Selected as Editor's Pick.
  15. Propagation-induced revival of entanglement in the angle-OAM bases; A. Bhattacharjee, M. K. Joshi, S. Karan, J. Leach, and A. K. Jha; Science Advances 8, eabn7876 (2022). [PDF] [Supplementary]
  16. Measurement of two-photon position-momentum EPR correlations through single-photon intensity measurements; A. Bhattacharjee, N. Meher, and A. K. Jha; New Journal of Physics, 24, 052033 (2022). [PDF]
  17. Direct measurement of atomic entanglement via cavity photon statistics; N. Meher, M. Bhattacharya and A. K. Jha; Annalen Der Physik 2100395 (2022). [PDF]
  18. Cavity Optomechanical Sensing and Manipulation of an Atomic Persistent Current; P. Kumar, T. Biswas, K. Feliz, R. Kanamoto, M.-S. Chang, A. K. Jha, and M. Bhattacharya; Physical Review Letters 127, 113601 (2021). [PDF]
  19. Experimental demonstration of structural robustness of spatially partially coherent fields in turbulence; A. Bhattarcharjee, and A. K. Jha; Optics Letters 45, 4068 (2020). [PDF]
  20. Dependence of the photon statistics of down-converted field-modes on the photon statistics of the pump field-mode; N. Meher, and A. K. Jha; JOSA B 37, 2248 (2020). [PDF]
  21. Phase matching in β-barium borate crystals for spontaneous parametric down-conversion; S. Karan, S. Aarav, H. Bharadhwaj, L. Taneja, A. De, G. Kulkarni, N. Meher, and A. K. Jha; Journal of Optics 22, 083501 (2020). [PDF]
  22. Measurement of Pure States of Light in the Orbital-Angular-Momentum Basis Using Nine Multipixel Image Acquisitions,” G. Kulkarni, S. Karan, and A. K. Jha; Phys. Rev. Applied 13, 054077 (2020). [PDF]
  23. Intrinsic degree of coherence of two-qubit states and measures of two-particle quantum correlations,” N. Meher, A. S. M. Patoary, G. Kulkarni, and A. K. Jha; JOSA B 37, 1224 (2020). [PDF]
  24. Controlling propagation of spatial coherence for enhanced imaging through scattering media; A. Bhattarcharjee, S. Aarav, H. Wanare, and A. K. Jha; Phys. Rev. A 101, 043839 (2020). [PDF]
  25. Intrinsic degree of coherence of classical and quantum states; A. S. M. Patoary, G. Kulkarni, and Anand K. Jha; JOSA B 36, 2765 (2019). [PDF]
  26. Generation of a Gaussian Schell-model field as a mixture of its coherent modes; A. Bhattacharjee, R. Sahu, and A. K. Jha; Journal of Optics 21, 105601 (2019). [PDF]
  27. Two-shot measurement of spatial coherence; A. Bhattacharjee, S. Aarav, and A. K. Jha; Appl. Phys. Lett. 113, 051102 (2018). [PDF]
  28. Angular Schmidt spectrum of entangled photons: Derivation of an exact formula and experimental characterization for noncollinear phase matching; G. Kulkarni, L. Taneja, S. Aarav, and A. K. Jha; Phys. Rev. A 97, 063846 (2018). [PDF]
  29. Angular Lens; R. Sahu, S. Chaudhary, K. Khare, M. Bhattacharya, H. Wanare, A. K. Jha; Optics Express, 26(7), 8709 (2018). [PDF]
  30. Single-shot measurement of the orbital-angular-momentum spectrum of light; G. Kulkarni, R. Sahu, O. S. Magana-Loaiza, R. W. Boyd, and A. K. Jha; Nature Communications, 8, 1054 (2017). [PDF]
  31. Efficient generation of propagation-invariant spatially-stationary partially coherent fields; S. Aarav, A. Bhattacharjee, H. Wanare, and A. K. Jha; Phys. Rev. A 96, 033815 (2017). [PDF]
  32. Transfer of temporal coherence in parametric down-conversion; G. Kulkarni, P. Kumar, and A. K. Jha; JOSAB 34(8) 1637 (2017). [PDF]
  33. Effects of photon scattering torque in off-axis levitated torsional cavity optomechanics; M. Bhattacharya, B. Rodenburg, W. Wetzel, B. Ek, and A. K. Jha; JOSA B 34, 060C44 (2017). [PDF]
  34. Intrinsic upper bound on two-qubit polarization entanglement predetermined by pump polarization correlations in parametric down-conversion; G. Kulkarni, V. Subrahmanyam, and A. K. Jha; Phys. Rev A 93, 063842 (2016). [PDF]
  35. Accurate multipixel phase measurement with classical-light interferometry; M. Singh, K. Khare, A. K. Jha, S. Prabhakar, and R. P. Singh; Phys. Rev. A 91, 021802(R) (2015). [PDF]
  36. Partial angular coherence and the angular Schmidt spectrum of entangled two-photon fields; A. K. Jha, G. S. Agarwal, and Robert W. Boyd; Physical Review A 84, 063847 (2011). [PDF]
  37. Supersensitive measurement of angular displacements using entangled photons; A. K. Jha, G. S. Agarwal, and R. W. Boyd; Physical Review A 83, 053829 (2011). [PDF]
  38. Quantum correlations in optical angle-orbital angular momentum variables; J. Leach, B. Jack, J. Romero, A. K. Jha, S. Franke-Arnold, D. G. Ireland, R.W. Boyd, S.M. Barnett, and M. J. Padgett; Science 329, 662 (2010). [PDF]
  39. New twist on light beams for quantum information science; R.W. Boyd, J. Leach, B. Jack, J. Romero, A. K. Jha, A. M. Yao, S. Franke-Arnold, S.M. Barnett, and M. J. Padgett; Optics and Photonics News 21, 48 (2010). [PDF]
  40. Effects of atmospheric turbulence on the entanglement of spatial two-qubit states; A. K. Jha, G .A. Tyler, and R. W. Boyd; Physical Review A 81, 053832 (2010). [PDF]
  41. Spatial two-photon coherence of the entangled field produced by down-conversion using a partially spatially coherent pump beam; A. K. Jha and R. W. Boyd; Physical Review A 81, 013828 (2010). [PDF]
  42. Angular two-qubit states and two-photon angular interference; A. K. Jha, J. Leach, B. Jack, S. Franke-Arnold, S. M. Barnett, R. W. Boyd, and M. J. Padgett; Physical Review Letters 104, 010501 (2010). [PDF]
  43. Violation of a Bell inequality in two-dimensional orbital angular momentum state-spaces; J. Leach, B. Jack, J. Romero, M. Ritsch-Marte, R. W. Boyd, A. K. Jha, S. M. Barnett, S. Franke-Arnold, and M. J. Padgett; Optics Express 17, 8287 (2009). [PDF]
  44. Temporal coherence and indistinguishability in two-photon interference effects; A. K. Jha, M. N. O'Sullivan, K. W. C. Chan, and R. W. Boyd; Physical Review A 77, 021801(R) (2008). [PDF]
  45. Exploring energy-time entanglement using geometric phase; A. K. Jha, M. Malik, and R. W. Boyd; Physical Review Letters 101, 180405 (2008). [PDF]
  46. Fourier relationship between the angle and angular momentum of entangled photons; A. K. Jha, B. Jack, E. Yao, J. Leach, R. W. Boyd, G. S. Buller, S. M. Barnett, S. Franke-Arnold, and M. J. Padgett; Physical Review A 78, 043810 (2008). [PDF]
  47. Propagation of quantum states of light through absorbing and amplifying media; R. W. Boyd, G. S. Agarwal, K. W. C. Chan, A. K. Jha, and M. N. O'Sullivan; Optics Communications 281, 3732 (2008). [PDF]