IISER Kolkata

Research Interests

(i) Quantum Condensed Matter Physics :- Quantum physics at the mesoscopic scale, Topological Insulators and Superconductors, Majorana fermions, Quantum Hall effect, Quantum Pumps, Quantum dots and quantum wires, Geometric (Berry) phase in quantum matter. (ii) Quantum Information and Quantum Computation :- Quantum Metric and quantum speed limit, Quantum measurements, Leggett-Garg type inequalities, Open Quantum Systems, Graph States.

Academic Background

PhD (Physics), Harish-Chandra Research Institute (Allahabad), 2004
MSc (Physics), Department of Physics (Kalyani University), 1998

Positions

Professor, IISER Kolkata (current)
Assistant Professor, Department of Physics and Astrophysics, University of Delhi (2010 - 2016)
Guest Scientist (on sabbatical from DU), Max Planck Institute for the Physics of Complex Systems, Dresden, Germany (2013 - 2014)
Postdoctoral Fellow, Forschungszentrum Julich, Germany (2009 - 2010)
Research Associate, CHEP, Indian Institute of Science (2008 - 2009)
Postdoctoral Fellow, Weizmann Institute of Science, Rehovot, Israel (2004 - 2007)
Graduate Student, Harish-Chandra Research Institute, Prayagraj (Allahabad) (1998 - 2004)
Visiting Graduate Student, Penn State University, USA (2001 - 2002)

Awards and Honors

Institute of Advanced Study Residential Fellow from University of Warwick, UK (2019)
Adjunct Professor from Harish-Chandra Research Institute, Allahabad, 2014-16 (2014)
Regular Associate from Abdus Salam International Centre for Theoretical Physics (ICTP), Trieste, Italy, 2014-19 (2014)

Selected Publications

Selected Publications:

2022."For an updated list of my publications/preprints, please see https://arxiv.org/find/all/1/au:+Das_Sourin/0/1/0/all/0/1." -, -, -

Varma, Anant V and Das, Sourin. 2021."Simulating many-body non-Hermitian PT-symmetric spin dynamics, arXiv:2012.13415 [quant-ph]." Phys. Rev. B, 104, 035153

Ratnakar, Amulya and Das, Sourin. 2021."Enhancement in tunneling density of states in Luttinger liquid -- role of non-local interaction." arXiv:2012.13414 [cond-mat.mes-hall], Phys. Rev. B, 104, 045402

Mukhopadhyay, Aabir and Das, Sourin. 2021."Thermal signature of Majorana fermions in Josephson junction." arXiv:1912.13028 [cond-mat.mes-hall], Phys. Rev. B, 103, 144502

Maiti, Tanmay; Agarwal, Pooja; Agarwal, Pooja; Sreejith, G J; Das, Sourin; Biasiol, Giorgio; Sorba, Lucia and Karmakar, Biswajit. 2020."Magnetic field dependent equilibration of fractional quantum Hall edge modes." arXiv:2006.11621 [cond-mat.mes-hall], Phys. Rev. Lett. , 125, 076802

All Publications:

2022."For an updated list of my publications/preprints, please see https://arxiv.org/find/all/1/au:+Das_Sourin/0/1/0/all/0/1." -, -, -

Maiti, Tanmay; Agarwal, Pooja; Purkait, Suvankar; Sreejith, J G; Das, Sourin; Biasiol, Giorgio; Sorba, Lucia and Karmakar, Biswajit. 2021."Temperature dependent equilibration of spin orthogonal integer/fractional quantum Hall edge modes, arXiv:2106.15848 [cond-mat.mes-hall]." Phys. Rev. B, 104, 085304

Varma, Anant V and Das, Sourin. 2021."Simulating many-body non-Hermitian PT-symmetric spin dynamics, arXiv:2012.13415 [quant-ph]." Phys. Rev. B, 104, 035153

Ratnakar, Amulya and Das, Sourin. 2021."Enhancement in tunneling density of states in Luttinger liquid -- role of non-local interaction." arXiv:2012.13414 [cond-mat.mes-hall], Phys. Rev. B, 104, 045402

Mukhopadhyay, Aabir and Das, Sourin. 2021."Thermal signature of Majorana fermions in Josephson junction." arXiv:1912.13028 [cond-mat.mes-hall], Phys. Rev. B, 103, 144502

Varma, Anant V.; Mohanty, Ipsika and Das, Sourin. 2021."Temporal correlation beyond quantum bounds in non-Hermitian PT- symmetric dynamics of a two level system." arXiv:1907.13400 [quant-ph], J. Phys. A: Math. Theor., 54, 115301

Singh, Ankit Kumar; Das, Antariksha; Das, Sourin and Ghosh, Nirmalya. 2020."Spin selective scattering modes in random anisotropy optical medium." arXiv:1912.13235 [physics.optics], Phys. Rev. A , 102, 033518

Maiti, Tanmay; Agarwal, Pooja; Agarwal, Pooja; Sreejith, G J; Das, Sourin; Biasiol, Giorgio; Sorba, Lucia and Karmakar, Biswajit. 2020."Magnetic field dependent equilibration of fractional quantum Hall edge modes." arXiv:2006.11621 [cond-mat.mes-hall], Phys. Rev. Lett. , 125, 076802

Roy, Monalisa Singh; Kumar, Manoranjan and Das, Sourin. 2020."Tunneling density of states in a Y junction of Tomonaga-Luttinger liquid wires: A density matrix renormalization group study." arXiv:1912.13040 [cond-mat.str-el], Phys. Rev. B, 102, 035130

Adak, Vivekananda; Roychowdhury, Krishanu and Das, Sourin. 2020."Spin Berry phase in helical edge state: Transport signatures." arXiv:1905.02801 [cond-mat.mes-hall], Phys. Rev. B, 102, 035423

Wadhawan, Disha and Das, Sourin. 2020."Dissipation and quantum noise in chiral circuitry." arXiv:1811.07289 [cond-mat.mes-hall], Physica E: Low- dimensional Systems and Nanostructures, 121, 114117

Jana, Sayan; Saha, Arijit and Das, Sourin. 2019."Jackiw-Rebbi zero modes in non-uniform topological insulator nanowire." arXiv:1902.06425 [cond-mat.mes-hall], Phys. Rev. B, 100, 085428

Som, Abhishek and Das, Sourin. 2019."Enhancement of superluminal weak values under Lorentz boost." arXiv:1903.10029 [quant-ph], Modern Physics Letters A, 35, 2050279

Tripathi, Krashna Mohan; Rao, Sumathi and Das, Sourin. 2019."Quantum charge pumping through Majorana bound states." arXiv:1809.00784 [cond-mat.mes-hall], Phys. Rev. B , 99, 085435

Mukherjee, Dibya Kanti; Rao, Sumathi and Das, Sourin. 2018."Fabry–Perot interferometry in Weyl semi-metals." arXiv:1710.06873 [cond-mat.mes-hall], J. Phys.:Condens. Matter, 31, 045302

Wadhawan, Disha; Roychowdhury, Krishanu; Mehta, Poonam and Das, Sourin. 2018."Multielectron geometric phase in intensity interferometry." arXiv:1710.05266 [cond-mat.mes-hall], Phys. Rev. B, 98, 155113

Sahu, Manas Ranjan; Liu, Xin; Paul, Arup Kumar; Das, Sourin; Raychaudhuri, Pratap; Jain, J. K. and Das, Anindya. 2018."Inter-Landau-level Andreev Reflection at the Dirac Point in a Graphene Quantum Hall State Coupled to a NbSe 2 Superconductor." arXiv:1807.07318 [cond-mat.mes-hall], Phys. Rev. Lett., 121, 086809

Paul, Ganesh C.; Saha, Arijit and Das, Sourin. 2018."Spin-selective coupling to Majorana zero modes in mixed singlet and triplet superconducting nanowires." arXiv:1802.05244 [cond-mat.mes-hall], Phys. Rev. B, 97, 205446

Roy, Sthitadhi; Roychowdhury, Krishanu and Das, Sourin. 2016."Pseudospin-valve effect on transport in junctions of three-dimensional topological insulator surfaces." New J. Phys., 18, 073038

Roychowdhury, Krishanu; Wadhawan, Disha; Mehta, Poonam; Karmakar, Biswajit and Das, Sourin. 2016."Quantum Hall realization of polarized intensity interferometry." Phys. Rev. B (Rapid), 93, 220101

Tripathi, Krashna Mohan; Das, Sourin and Rao, Sumathi. 2016."Fingerprints of Majorana Bound States in Aharonov-Bohm Geometry." Phys. Rev. Lett. , 116, 166401

Das, Sourin. 2016."Spin Polarised Tunneling Probe for Two and Three Dimensional Dirac Metals." Journal of the Indian Institute of Science, 96, 137

Wadhawan, Disha; Mehta, Poonam and Das, Sourin. 2016."Geometric phase in p-n junctions of helical edge states." Phys. Rev. B, 93, 085310

Roy, Sthitadhi and Das, Sourin. 2016."Transport signatures of surface potentials on three-dimensional topological insulators." Phys. Rev. B, 93, 085422

Roy, Sthitadhi; Saha, Kush and Das, Sourin. 2015."Probing surface states exposed by crystal terminations at arbitrary orientations of 3D topological insulators." Phys. Rev. B , 91, 195415

Roy, Sthitadhi; Soori, Abhiram and Das, Sourin. 2015."Tunnel magnetoresistance scan of a pristine three-dimensional topological insulator." Phys. Rev. B (Rapid), 91, 041109

Das, Sourin and Satija, Indubala I.. 2014."Majorana fermions: Anholonomy of bound states." cond-mat/1409.6139, ., .

Hell, Michael; Das, Sourin and Wegewijs, Maarten R.. 2013."Transport of spin anisotropy without spin currents." Phys. Rev. B , 88, 115435

Viola, Giovanni; Das, Sourin; Grosfeld, Eytan and Stern, Ady. 2012."Thermoelectric Probe for Neutral Edge Modes in the Fractional Quantum Hall Regime." Phys. Rev. Lett. , 109, 146801

Soori, Abhiram; Das, Sourin and Rao, Sumathi. 2012."Magnetic-field-induced Fabry-Pérot resonances in helical edge states." Phys. Rev. B , 86, 125312

Saha, K.; Das, Sourin; Sengupta, K. and Sen, Diptiman. 2011."Spin-polarized STM spectra of Dirac electrons on the surface of a topological insulator." Phys. Rev. B , 84, 165439

Baumgartel, Michael M. E.; Hell, Michael; Das, Sourin and Wegewijs, Maarten R.. 2011."Transport and Accumulation of Spin Anisotropy." Phys. Rev. Lett. , 107, 087202

Das, Sourin and Rao, Sumathi. 2011."Spin-Polarized Scanning-Tunneling Probe for Helical Luttinger Liquids." Phys. Rev. Lett. , 106, 236403

Agarwal, Amit; Das, Sourin and Sen, Diptiman. 2010."Power dissipation for systems with junctions of multiple quantum wires." Phys. Rev. B , 81, 035324

Das, Sourin; Rao, Sumathi and Saha, Arijit. 2009."Resonant charge and spin transport in a T -stub coupled to a superconductor." Eur. Phys. J. B., 72, 139

Agarwal, Amit; Das, Sourin; Rao, Sumathi and Sen, Diptiman. 2009."Enhancement of Tunneling Density of States at a Junction of Three Luttinger Liquid Wires." Phys. Rev. Lett. , 103, 026401

Das, Sourin; Rao, Sumathi and Sen, Diptiman. 2009."Effect of inter-edge Coulomb interactions on transport through a point contact in a 5/2 quantum Hall state." Europhys. Lett. , 86, 037010

Das, Sourin; Rao, Sumathi and Saha, Arijit. 2009."Systematic stability analysis of the renormalization group flow for the normal-superconductor-normal junction of Luttinger liquid wires." Phys. Rev. B , 79, 155416

Grosfeld, Eytan and Das, Sourin. 2009."Probing the neutral edge modes in transport across a point contact via thermal effects in the Read-Rezayi non-abelian quantum Hall states." Phys. Rev. Lett. , 102, 106403

Das, Sourin and Rao, Sumathi. 2008."Duality between normal and superconducting junctions of multiple quantum wires." Phys. Rev. B , 78, 205421

Saha, Arijit and Das, Sourin. 2008."Quantized charge pumping in a superconducting double-barrier structure: Nontrivial correlations due to proximity effect." Phys. Rev. B , 78, 075412

Das, Sourin and V. Shpitalnik, V.. 2008."Quantum pump for fractional charge." Europhys. Lett. , 83, 17004

Das, Sourin; Rao, Sumathi and Saha, Arijit. 2008."Renormalization group study of transport through a superconducting junction of multiple one-dimensional quantum wires." Phys. Rev. B , 77, 155418

Das, Sourin; Rao, Sumathi and Saha, Arijit. 2008."Spintronics with NSN Junction of one-dimensional quantum wires: A study of pure spin current and magnetoresistance." Europhys. Lett. , 81, 67001

Greenbaum, D.; Das, Sourin; Schwiete, G. and Silvestrov, P. G.. 2007."Pure spin current in graphene normal-superconductor structures." Phys. Rev. B , 75, 195437

Das, Sourin; Rao, Sumathi and Sen, Diptiman. 2006."Interedge interactions and fixed points at a junction of quantum Hall line junctions." Phys. Rev. B , 74, 045322

Das, Sourin and Rao, Sumathi. 2005."Effects of interaction on an adiabatic quantum electron pump." Phys. Rev. B , 71, 165333

Das, Sourin and Rao, Sumathi. 2004."Transport through multiply connected quantum wires." Phys. Rev. B , 70, 155420

Das, Sourin; Rao, Sumathi and Sen, Diptiman. 2004."Renormalization group study of the conductances of interacting quantum wire systems with different geometries." Phys. Rev. B , 70, 085318

Das, Sourin and Rao, Sumathi. 2003."Effective action and interaction energy of coupled quantum dots." Phys. Rev. B , 68, 073301

Banerjee, Argha; Das, Sourin and Rao, Sumathi. 2003."Quantised charge pumping through multiple quantum dots." cond-mat/0307324, ., .

Deo, P. Singha; Bandopadhyay, S. and Das, Sourin. 2002."Scattering phase shifts in quasi-one-dimension." Int. Jour. of Mod. Phys. B , 16, 2247

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भारतीय विज्ञान शिक्षा एवं अनुसंधान संस्थान कोलकाता

INDIAN INSTITUTE OF SCIENCE EDUCATION AND RESEARCH KOLKATA

Faculty Details

Research Interests

Academic Background

Positions

Awards and Honors

Selected Publications