Assistant Professor

Dr Nilakantha Meher

Department of Physics

Interests

  • Quantum Optics
  • Quantum Information Processing, Entanglement
  • Quantum interferometry, Optomechanics

Faculty Details

Education

2011

Sambalpur University
BSc

2013

Pondicherry University
MSc

2018

Indira Gandhi Centre for Atomic Research, Kalpakkam
PhD

Experience

  • Nov 2018 to June 2021 – Postdoctoral Fellow – Indian Institute of Technology Kanpur, Uttar Pradesh
  • June 2021 to April 2024 – Postdoctoral Fellow – Weizmann Institute of Science, Israel

    • Research Interest

    • Quantum information processing in cavities (quantum state transfer, entanglement generation, realisation of quantum gates, quantum dense coding, quantum teleportation).
    • Quantum dynamics and control of photon transfer in coupled cavity network.
    • Entanglement generation and measurement in atom-cavity system.
    • Generation of nonclassical states for quantum applications.
    • Cavity quantum optomechanics.
    • Nonlinear interferometers for quantum sensing applications.
    • Quantum thermodynamics in atom-cavity system and interferometer.

    Awards & Fellowships

    • April 2022 - Weizmann Excellence Postdoctoral Fellowship (Dean postdoctoral fellowship), Weizmann Institute of Science, Israel
    • June 2021 - Feinberg Graduate postdoctoral Fellowship, Weizmann Institute of Science, Israel

    Publications

    Journal articles:

  • N. Meher, "Quantum optics in MATLAB", J. Phys. B: At. Mol. Opt. Phys. 57, 073001 (2024).
  • T. Opatrný, Š. Bräuer, A. G. Kofman, A. Misra, N. Meher, O. Firstenberg, E. Poem, G. Kurizki, "Nonlinear coherent heat machines", Sci. Adv. 9, eadf1070 (2023).
  • N. Meher, A. Raman and S. Sivakumar, “Limitations to Realize Quantum Zeno Effect in Beam Splitter Array—a Monte Carlo Wavefunction Analysis” Journal of the Physical Society of Japan 91, 114401 (2022).
  • N. Meher and S. Sivakumar, "A review on quantum information processing in cavities", European Physical Journal Plus, 137, 985 (2022).
  • A. Bhattacharjee, N. Meher and A. K. Jha, "Measurement of two-photon position-momentum EPR correlations through single-photon intensity measurements ", New J. Phys. 24, 053033 (2022).
  • N. Meher, M. Bhattacharya and A. K. Jha, "Direct measurement of atomic entanglement via cavity photon statistics", Annalen der Physik 534, 2100395 (2022).
  • S. Karan, S. Aarav, H. Bharadhwaj, L. Taneja, A. De, G. Kulkarni, N. Meher, A. K. Jha, "Phase matching in β-barium borate crystals for spontaneous parametric down-conversion, J. Opt. 22, 083501 (2020).
  • N. Meher and A. K. Jha, "Dependence of the photon statistics of down-converted field-modes on the photon statistics of the pump field-mode", J. Opt. Soc. Am. B, 37, 8, 2248-2255 (2020).
  • N. Meher, A. S. M. Patoary, G. Kulkarni, A. K. Jha, "Intrinsic degree of coherence of two-qubit states and measures of two-particle quantum correlations", J. Opt. Soc. Am. B, 37 (4), 1224 (2020).
  • N. Meher, "Scheme for realizing quantum dense coding via entanglement swapping", J. Phys. B: At. Mol. Opt. Phys. 53, 065502 (2020).
  • N. Meher and S. Sivakumar, "Enhancing phase sensitivity with number state filtered coherent states", Quantum Information Processing, 19, 51 (2020).
  • N. Meher and S. Sivakumar, “Atomic switch for control of heat transfer in coupled cavities”, J. Opt. Soc. Am. B, 37, 1, 138-147 (2020).
  • N. Meher, “Perfect quantum state transfer in Glauber-Fock cavity array”, Int J Theor Phys, 59, 218-228 (2020)
  • N. Meher, “A proposal for the implementation of quantum gates in an optomechanical system via phonon blockade”, J. Phys. B: At. Mol. Opt. Phys. 52,205502 (2019).
  • N. Meher and S. Sivakumar, “Number state filtered coherent state”, Quantum Information Processing 17, 233 (2018).
  • N. Meher, S. Sivakumar, and P. K. Panigrahi, “Duality and quantum state engineering in cavity arrays”, Scientific Reports (Nature) 7, 9251 (2017).
  • N. Meher and S. Sivakumar, "Quantum interference induced photon localization and delocalization in Kerr-type nonlinear cavities," J. Opt. Soc. Am. B, 33, 1233-1241 (2016).

    •  Tutorials:

  • N. Meher, "Quantum optics in MATLAB", J. Phys. B: At. Mol. Opt. Phys. 57, 073001 (2024). Link: https://iopscience.iop.org/article/10.1088/1361-6455/ad2e2f

    • Conference Proceedings:

  • N. Meher and S. Sivakumar, “Nonintegrability and quantum fluctuations in a quantum optical model”, National Laser Symposium 23, Tirupati. ISBN: 9788190332156 CP-04-04.
  • N. Meher and S. Sivakumar, "Localization and delocalization dynamics of photons in linearly coupled cavity arrays," in 13th International Conference on Fiber Optics and Photonics, OSA Technical Digest (online) (Optical Society of America, 2016), paper Th3A.73.
  • N. Meher and A. K. Jha, “Photon statistics in parametric down-conversion process”, Laser Science conference (Optical Society of America), JTu1B.38, 2020.

    • Invited talk:

  • “Controlling quantum state transfer in coupled cavities”, Summer School on Quantum Information and Quantum Technology 2021, IISER Kolkata (14th June– 18th July 2021).
  • “Direct measurement of atomic entanglement”, Summer School on Quantum Information and Quantum Technology 2022, IISER Kolkata (1st June– 30th June 2022).
  • "Quantum teleportation", On the occasion of National Science Day 2024 at Panchayat College, Bargarh, Odisha

    • Contact Details

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