Faculty Details

Areas of Interest

• Optical Spins
• Magnetic Resonance
• Machine Learning for Quantum Control
• Scanning Confocal Fluorescence Microscopy

Current Research

The following topics are currently being explored:
1) T1-based quantum sensing with NV-nanodiamonds
2) Investigating decoherence-free sub-spaces in diamond and hBN
3) Understanding electron-nuclear dynamics for high-fidelity readout and nuclear hyperpolarization
4) Developing methods for efficient simulation of superconducting qubits
5) Defect generation and characterization
6) Employing ML-based techniques for noise spectroscopy and mitigation
7) Vector AC-magnetometry with NVs in diamond
8) Optimal surface passivation of diamond

Students

Current PhD Students

• PH20D204    Atanu Ghosh
• PH22D075    Basanta Mistri
• PH22D050    Udit Kandpal
• PH24D027    Akshita Bihari Sharma

Recent Publications

• Vector detection of AC magnetic fields by Nitrogen-Vacancy centers of single orientation in diamond. P. Lamba, A. Rana, S. Halder, S. Dhomkar, D. Suter, R. K. Kamineni. Physical Review B. 109. 195424.
  DOI: https://doi.org/10.1103/PhysRevB.109.195424. 2024.
• Stability of near surface nitrogen vacancy centers using dielectric surface passivation. R. Kumar, S. Mahajan, F. Donaldson, S. Dhomkar, H. J. Lancaster, C. Kalha, A. A. Riaz, Y. Zhu, C. A. Howard, A. Regoutz, J. J. L. Morton. ACS photonics. 11. 1244.
  DOI: https://doi.org/10.1021/acsphotonics.3c01773. 2024.
• Comparison of optical trapping wavelengths for nanoscopic diamonds containing nitrogen-vacancy centers. S. Roy, A. Ghosh, M. Lokesh, G. Nalupurackal, S. Chakraborty, J. Goswami, V. P Bhallamudi, S. Dhomkar, B. Roy. Journal of Physics Communications. 8. 055001.
  DOI: https://doi.org/10.1088/2399-6528/ad48d410.1088/2399-6528/ad48d4. 2024.
• Donor-bound-exciton strain microscopy in silicon devices. P. Conti, S. Dhomkar, P. Ross, J. Mansir, J. J. L. Morton.
  DOI: https://doi.org/10.48550/arXiv.2408.17382. 2024.
• Toward Deep-Learning-Assisted Spectrally Resolved Imaging of Magnetic Noise. F. Meneses, D. F. Wise, D. Pagliero, P. R. Zangara, S. Dhomkar, C. A. Meriles. Physical Review Applied. 18. 024004.
  DOI: https://doi.org/10.1103/PhysRevApplied.18.024004. 2022.
• Using deep learning to understand and mitigate the qubit noise environment. D. F. Wise, J. J. L. Morton, S. Dhomkar. PRX Quantum . 2. 010316.
  DOI: https://doi.org/10.1103/PRXQuantum.2.010316. 2021.
• Quantum registers hit the right wavelength. S. Dhomkar and J. J. L. Morton. Nature Materials. 19. 1259.
  DOI: https://doi.org/10.1038/s41563-020-00808-0. 2020.
• Dynamics of frequency-swept nuclear spin optical pumping in powdered diamond at low magnetic fields. P. R. Zangara, S. Dhomkar, A. Ajoy, K. Liu, R. Nazaryan, D. Pagliero, D. Suter, J.A. Reimer, A. Pines, C. A. Meriles. Proceedings of the National Academy of Sciences . 116. 2512.
  DOI: https://doi.org/10.1073/pnas.1811994116. 2019.
• Spin readout via spin-to-charge conversion in bulk diamond nitrogen-vacancy ensembles. H. Jayakumar, S. Dhomkar, J. Henshaw, C. A. Meriles. Applied Physics Letters . 113. 122404.
  DOI: https://doi.org/10.1063/1.5040261. 2018.
• Charge dynamics in near-surface, variable-density ensembles of nitrogen vacancy centers in diamond. S. Dhomkar, H. Jayakumar, P. R. Zangara, C. A. Meriles. Nano Letters . 18. 4046.
  DOI: https://doi.org/10.1021/acs.nanolett.8b01739. 2018.
• Orientation independent room-temperature optical 13C hyperpolarization in powdered diamond. A. Ajoy, K. Liu, R. Nazaryan, X. Lv, P. R. Zangara, B. Safvati, G. Wang, D. Arnold, G. Li, A. Lin, P. Raghavan, E. Druga, S. Dhomkar, D. Pagliero, J. A. Reimer, D. Suter, C. A. Meriles, A. Pines. Science Advances . 4. eaar5492.
  DOI: https://doi.org/10.1126/sciadv.aar5492. 2018.
• On-Demand Generation of Neutral and Negatively-Charged Silicon-Vacancy Centers in Diamond. S. Dhomkar, P. R. Zangara, J. Henshaw, C. A. Meriles. Physical Review Letters . 120. 117401.
  DOI: https://doi.org/10.1103/PhysRevLett.120.117401. 2018.
• Multispin-assisted optical pumping of bulk 13C nuclear spin polarization in diamond. D. Pagliero, K. R. K. Rao, P. R. Zangara, S. Dhomkar, H. H. Wong, A. Abril, N. Aslam, A. Parker, J. King, C. E. Avalos, A. Ajoy, J. Wrachtrup, A. Pines, C. A. Meriles. Physical Review B . 97. 024422.
  DOI: https://doi.org/10.1103/PhysRevB.97.024422. 2018.
• Decoherence in semiconductor nanostructures with type-II band alignment: All-optical measurements using Aharonov-Bohm excitons. I. L. Kuskovsky, L. G. Murokh, B. Roy, H. Ji, S. Dhomkar, J. Ludwig, D. Smirnov, M. C. Tamargo. Physical Review B . 95. 165445.
  DOI: https://doi.org/10.1103/PhysRevB.95.165445. 2017.
• Long-term data storage in diamond. S. Dhomkar, J. Henshaw, H. Jayakumar, C. A. Meriles. Science Advances . 2. e1600911 .
  DOI: https://doi.org/10.1126/sciadv.1600911. 2016.
• Optical patterning of trapped charge in nitrogen-doped diamond. H. Jayakumar, J. Henshaw, S. Dhomkar, D. Pagliero, A. Laraoui, N. B. Manson, R. Albu, M. W. Doherty, C. A. Meriles. Nature Communications . 7. 12660.
  DOI: https://doi.org/10.1038/ncomms12660. 2016.

Teaching