Hi, my name is Sanchar Sharma

Introduction

I am a theoretical physicist currently working as a postdoc at Laboratoire de Physique de l'Ecole Normale Supérieure (LPENS) in Paris in the group of Christina Psaroudaki.

I am interested in developing the field of quantum magnonics, with the eventual aim of using magnons for quantum applications such as interconnects, transduction, or logic. In the short term, this involves developing practical methods to study and manipulate quantum magnons, along with developing microscopic theories of magnetic materials.

You can find more details about my research on Google Scholar, Orcid, and GitHub.

Background

Postdoctoral Researcher

Laboratoire de Physique de l'Ecole Normale Supérieure (LPENS)

Paris, France

Apr 2024 -- Present

Postdoctoral Researcher

Rheinisch-Westfälische Technische Hochschule (RWTH)

Aachen, Germany

Jan 2023 -- Mar 2024

Postdoctoral Researcher

Max Planck Institute for the Science of Light (MPL)

Erlangen, Germany

Nov 2019 -- Dec 2022

Doctoral candidate

Delft University of Technology (TU Delft)

Delft, Netherlands

Aug 2015 -- Aug 2019

Bachelors + Masters

Indian Institute of Technology Bombay (IIT-B)

Mumbai, India

Aug 2010 -- Jun 2015

Research

Quantum Magnonics

Quantum sensing and manipulation of magnons

Can magnets be useful for quantum applications? While magnetism has long been investigated for classical applications such as low-power logic devices, long-range transport, magnetic field sensing, and more, its potential for quantum applications garnered attention only recently. My goal with these theoretical developments is to propose feasible experiments that can advance demonstrations of genuine non-classical effects in magnets.

  1. Magnon-mediated quantum gates for superconducting qubits
    M Dols, Sanchar Sharma, L Bechara, YM Blanter, M Kounalakis, S Viola Kusminskiy, arXiv (2024)
  2. Quantum tomography of magnons using Brillouin light scattering
    Sanchar Sharma, S Viola Kusminskiy, VASV Bittencourt, Phys. Rev. B (2024)
  3. Protocol for generating an arbitrary quantum state of the magnetization in cavity magnonics
    Sanchar Sharma, VASV Bittencourt, S Viola Kusminskiy, Journal of Physics: Materials (2022)
  4. Spin cat states in ferromagnetic insulators
    Sanchar Sharma, VASV Bittencourt, AD Karenowska, S Viola Kusminskiy, Phys Rev B: Letters (2021)

When magnon met photon

Microwave to optical transduction is one of the most sought after application in quantum communication. Magnets are promising intermediaries for such a transduction because they couple very strongly with the microwaves, although achieving a comparable coupling with optics remains a challenge. My work involves studying and enhancing this optomagnonic coupling, particularly with the use of cavities.

  1. Cavity-Enhanced Optical Manipulation of Antiferromagnetic Magnon-Pairs
    TS Parvini, ALE Römling, Sanchar Sharma, S Viola Kusminskiy, arXiv (2024)
  2. Design of an optomagnonic crystal: Towards optimal magnon-photon mode matching at the microscale
    J Graf, Sanchar Sharma, H Hübl, S Viola Kusminskiy, Phys. Rev. Res. (2021)
  3. Coherent pumping of high-momentum magnons by light
    F Šimić, Sanchar Sharma, YM Blanter, GEW Bauer, Phys. Rev. B (2020)
  4. Optimal mode matching in cavity optomagnonics
    Sanchar Sharma, BZ Rameshti, YM Blanter, GEW Bauer, Phys. Rev. B (2020)
  5. Optical cooling of magnons
    Sanchar Sharma, YM Blanter, GEW Bauer, Phys. Rev. Letters (2018)
  6. Selection rules for cavity-enhanced Brillouin light scattering from magnetostatic modes
    JA Haigh, NJ Lambert, Sanchar Sharma, YM Blanter, GEW Bauer, AJ Ramsay, Phys. Rev. B (2018)
  7. Light scattering by magnons in whispering gallery mode cavities
    Sanchar Sharma, YM Blanter, GEW Bauer, Phys. Rev. B (2017)
Cavity Opto-magnonics

Contact Me

Please feel free to reach me at Institute Email, gmail, or LinkedIn.