Manis Hazra

IIT Kanpur

Education / Work History

  • Ph.D. Scholar, Nuc. Engg. & Tech. Prog., IIT Kanpur (2018-present)
  • M.Tech., Jadavpur University, Kolkata (2013)
  • B.Tech., Techno India Group (WBUT), Kolkata (2010)

Research Topic / Interest

My main interest is currently:

  • Quantum Computing by Coherent Control of Atom or Molecular Quantum States

Publications

These include only those published in our lab.

  1. Modification of the Expression of L1-Norm of Coherence. M. Hazra and D. Goswami, in Quantum 2.0 Conference and Exhibition (2022), Paper QW2A.3 (Optica Publishing Group, 2022), p. QW2A.3 [Abstract] [PDF] [BibTeX]

    Abstract: Though a well-verified approach of quantifying quantum coherence is l1-norm, this is not normalized for a multi-qubit (multi-level) system. We propose a modification to show that the altered expression normalizes a multi-qubit (multi-level) system coherence with numerical studies.

     BibTeX: @inproceedings{hazraModificationExpressionL1norm2022,
  title = {Modification of the Expression of L1-Norm of Coherence},
  booktitle = {Quantum 2.0 {{Conference}} and {{Exhibition}} (2022), Paper {{QW2A}}.3},
  author = {Hazra, Manis and Goswami, Debabrata},
  date = {2022-06-13},
  pages = {QW2A.3},
  publisher = {{Optica Publishing Group}},
  doi = {10.1364/QUANTUM.2022.QW2A.3},
  url = {https://opg.optica.org/abstract.cfm?uri=QUANTUM-2022-QW2A.3},
  urldate = {2022-12-31},
  eventtitle = {Quantum 2.0}
}
  2. Quantifying Coherence with Principal Diagonal Elements of Density Matrix. M. Hazra and D. Goswami, (2023) [Abstract] [PDF] [BibTeX]

    Abstract: Being the key resource in quantum physics, the proper quantification of coherence is of utmost importance. Amid complex-looking functionals in quantifying coherence, we set forth a simple and easy-to-evaluate approach: Principal diagonal difference of coherence (C_PDD), which we prove to be non-negative, self-normalized, and monotonic (under any incoherent operation). To validate this theory, we thought of a fictitious two-qubit system (both interacting and non-interacting) and, through the laser pulse-system interaction (semi-classical approach), compare the coherence evolution of C_PDD with the relative entropy of coherence (C_(r.e)) and l_1-norm of coherence (C_(l_1 )), in a pure-state regime. The numerical results show that the response of C_PDD is better than the other two quantifiers. To the best of our knowledge, this letter is the first to show that a set of density-matrix diagonal elements carries complete information on the coherence (or superposition) of any pure quantum state.

     BibTeX: @online{hazraQuantifyingCoherencePrincipal2023,
  title = {Quantifying Coherence with Principal Diagonal Elements of Density Matrix},
  author = {Hazra, Manis and Goswami, Debabrata},
  date = {2023-02-06},
  eprint = {2301.12295},
  eprinttype = {arxiv},
  eprintclass = {quant-ph},
  doi = {10.48550/arXiv.2301.12295},
  url = {http://arxiv.org/abs/2301.12295},
  urldate = {2023-07-28},
  pubstate = {preprint}
}