Archak Purkayastha

Archak is a physicist from Kolkata, India. He graduated with Bachelors degree in Physics from Jadavpur University, Kolkata, in 2011, followed by a Masters Degree in Physics from Indian Institute of Technology, Kanpur, in 2013. Then he did his Ph.D at the International Centre for Theoretical Sciences, Tata Institute for Fundamental Research (ICTS-TIFR), Bangalore, under the supervision of Prof. Abhishek Dhar. He defended his PhD in September, 2018, and stayed at ICTS-TIFR till December, 2018 as a visiting-fellow. He joined the QuSys team for his post-doctoral research from Feb 1, 2019. Subsequently, he was awarded the Marie-Sklodowska Curie Actions Individual Fellowship (MSCA-IF) to carry out research in collaboration with the QuSys group and the group of Prof. Javier Prior at Universidad Politécnica de Cartagena (UPCT), Spain. He has been an MSCA-IF since May 1, 2020. 

His expertise is in microscopic descriptions of transport phenomena, especially in open quantum systems.  As an MSCA-IF, he has been carrying out research in developing exact analytical and numerical techniques for exploring thermodynamics of interacting open quantum systems, and applications such as quantum heat engines, refrigerators and sensors.

Selected Publications:

1. Emergent PT-symmetry in a double-quantum-dot circuit QED setup, Archak Purkayastha, Manas Kulkarni, and Yogesh N. Joglekar, Phys. Rev. Research 2, 043075 (2020).

2. Tensor-Network Method to Simulate Strongly Interacting Quantum Thermal Machines, Marlon Brenes, Juan José Mendoza-Arenas, Archak Purkayastha, Mark T. Mitchison, Stephen R. Clark, and John Goold, Phys. Rev. X 10, 031040, (2020).

3. Tunable phonon-induced steady-state coherence in a double-quantum-dot charge qubit, Archak  Purkayastha, Giacomo Guarnieri, Mark T. Mitchison, R Filip, John Goold, npj Quantum Information 6 (1), 1-7, (2020).

4. Classifying transport behavior via current fluctuations in open quantum systems, Archak Purkayastha, Journal of Statistical Mechanics: Theory and Experiment, 4, 043101, (2019).

5. Out-of-equilibrium open quantum systems: A comparison of approximate quantum master equation approaches with exact results, Phys. Rev. A 93, 062114, (2016).