Sumanta Kumar Das

Sumanta Kumar Das

Assistant professor

 I have a decade of research experience in quantum optics, quantum information, communication and quantum computing. In particular, my expertise lies in the study of light-matter interaction at the quantum regime with focus on superconducting qubits for quantum communication and computing. Additionally, I have several years of teaching experience in quantum optics, lasers, superconducting qubits, quantum algorithms and quantum information sciences. I am also interested in understanding how quantum computing and machine learning can be combined to solve challenging problems in drug desigining, optimization algorithms, finance sector and basic sciences.

Current research

My current research emcompasses the field of quantum nonlinear optics, quantum networks, hybrid systems and quantum computation with photons. I am trying to find novel methods and systems for generating strong nonlinearity at quantum levels. The aim is to harness the nonlinearity for achieving efficient photon-photon interaction at the quantum level - the holy grail of both nonlinear optics at and implementation of photonic logic gates for quantum information protocols. Furthermore, I investigate hybrid semiconductor-superconductor systems for developing efficient light-matter interfaces. Such interfaces has potential applications in quantum technologies like quantum nodes, memories and optical switches. I also work on engineering of decoherence for efficient generation and preservation entanglement - a key requirement for quantum information and computation.

Primary fields of research

Quantum Nonlinear Optics, Superconducting qubits, Quantum Information and communication protocols, Quantum Networks, Quantum Logic Operations, Decoherence. 

Fields of interest

Quantum Optics, Quantum Information Sciences, Quantum Simulation, Many body physics, Nonlinear Optics, Quantum Machine Learning, Nanosciences

Teaching

2016- 2019 : Quantum Information, NBI, Copenhagen University

2010           : Laser Physics, Quantum Optics, Texas A&M University

2006-2007  : Basic Physics, Oklahoma State University

Selected publications

  1. Published

    Strongly Correlated Photon Transport in Waveguide Quantum Electrodynamics with Weakly Coupled Emitters

    Mahmoodian, S., Čepulkovskis, M., Das, S. K., Lodahl, P., Hammerer, K. & Sørensen, A. S., 3 Oct 2018, In : Physical Review Letters. 121, 7 p., 143601.

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    Photon scattering from a system of multilevel quantum emitters. II. Application to emitters coupled to a one-dimensional waveguide

    Das, S. K., Elfving, V. E., Reiter, F. & Sørensen, A. S., 17 Apr 2018, In : Physical Review A. 97, 22 p., 043838.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Interfacing Superconducting Qubits and Single Optical Photons Using Molecules in Waveguides

    Das, S. K., Elfving, V. E., Faez, S. & Sørensen, A. S., 3 Apr 2017, In : Physical Review Letters. 118, 140501.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Photonic controlled- PHASE gates through Rydberg blockade in optical cavities

    Das, S. K., Grankin, A., Iakoupov, I., Brion, E., Borregaard, J., Boddeda, R., Usmani, I., Ourjoumtsev, A., Grangier, P. & Sørensen, A. S., 11 Apr 2016, In : Physical Review A (Atomic, Molecular and Optical Physics). 93, 4, 040303.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Coherence-Enhanced Optical Determination of the Th-229 Isomeric Transition

    Liao, W-T., Das, S., Keitel, C. H. & Palffy, A., 28 Dec 2012, In : Physical Review Letters. 109, 26

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 43241911