• 2012-present, Postdoc, LANL, Los Alamos, NM, USA
• 2010-2012, Postdoc, UC, Cincinnati, OH, USA
• 2009-2010, Postdoc, UCSD, La Jolla, CA, USA
• Ph.D. (2009) Raman Research Institute, Bangalore, India
• M.Sc. (2004) Physics, Jadavpur University, Calcutta, India
• B.Sc. (2002) Physics, Jadavpur University, Calcutta, India

Research Interests:

• My research interests are at the interfaces of condensed matter, non-equilibrium statistical mechanics and quantum optics. Some representative examples of problems I have worked on include noise spectroscopy of atomic gases and semiconductors, strong light-matter interactions in 1D open space, charge and energy transport in bulk materials and nanostructures in the presence of disorder and nonlinear interactions, and development of non-equilibrium transport formalism for open quantum systems.

Selected Recent Publications:

1. P. Glasenapp, L. Yang, D. Roy, D. G. Rickel, A. Greilich, M. Bayer, N. A. Sinitsyn, S. A. Crooker, Spin noise spectroscopy beyond thermal equilibrium and linear response, arXiv:1407.2895 (2014)
2. D. Roy, N. A. Sinitsyn, Two-color spin noise spectroscopy of interacting spin systems, LA-UR-14-22422 (2014)
3. D. Roy, L. Yang, S. A. Crooker, N. A. Sinitsyn, Cross-correlation spin noise spectroscopy of heterogeneous interacting spin systems, arXiv:1408.5399 (2014)
4. D. Roy, N. Bondyopadhaya, Statistics of scattered photons from a driven three-level emitter in 1D open space, Phys. Rev. A 89, 043806 (2014)
5. D. Roy, Y. Li, A. Greilich, Y. V. Pershin, A. Saxena, N. A. Sinitsyn, Spin noise spectroscopy of quantum dot molecules, Phys. Rev. B 88, 045320 (2013)
6. D. Roy, N. Bondyopadhaya, S. Tewari, Topologically trivial zero bias conductance peak in semiconductor Majorana wires from boundary effects, Phys. Rev. B 88, 020502 (R) (2013)
7. Y. V. Pershin, V. A. Slipko, D. Roy, N. A. Sinitsyn, Two-Beam Spin Noise Spectroscopy, Appl. Phys. Lett. 102, 202405 (2013)
8. D. Roy, Two-photon scattering of a tightly focused weak light beam from a small atomic ensemble : an optical probe to detect atomic level structures, Phys. Rev. A 87, 063819 (2013)
9. D. Roy, Cascaded two-photon nonlinearity in a one-dimensional waveguide with multiple two-level emitters, Scientific Reports 3, 2337 (2013)
10. D. Roy, Crossover from Fermi-Pasta-Ulam to normal diffusive behaviour in heat conduction through open anharmonic lattices, Phys. Rev. E 86, 041102 (2012)
11. D. Roy, C. J. Bolech, N. Shah, Majorana fermions in an out-of-equilibrium topological superconducting wire: an exact microscopic transport analysis of a p-wave open chain coupled to normal leads, Phys. Rev B 86, 094503 (2012)
12. D. Roy, Two-photon scattering by a driven three-level emitter in a one-dimensional waveguide and electromagnetically induced transparency, Phys. Rev. Lett. 106, 053601 (2011)
13. D. Roy, G. Vignale, M. Di Ventra, Viscous corrections to the resistance of nano-junctions: a dispersion relation approach, Phys. Rev B 83, 075824 (2011)
14. D. Roy, Few-photon optical diode, Phys. Rev. B 81, 155117 (2010)
15. A. Chaudhuri, A. Kundu, D. Roy, A. Dhar, J. L. Lebowitz, H. Spohn, Heat transport and phonon localization in mass-disordered harmonic crystals, Phys. Rev B 81, 064301 (2010).