Assistant Professor in Physics @IITHyderabad, previously post-doc @CCQcenter, MSCA-IF @QuSysTCD ......will be talking mainly about recent research works....
Joined October 2020
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Introducing "Quantum non-Markovian Hatano-Nelson model": arxiv.org/abs/2511.05328
Perhaps the first exploration of a non-Markovian nonreciprocal quantum lattice, how it arises exactly, and some of its special properties. [Note: Non-Markovian is generic, Markovian is approximate.]
Making our recently discovered extreme non-Markovian quantum Mpemba effect doi.org/10.1103/PhysRevLett.… relevant for quantum impurity model simulations: "Accelerated calculation of impurity Green's functions exploiting the extreme Mpemba effect" arxiv.org/abs/2510.26651
Exceptional points are critical points of non-Hermitian Physics. Van Hove singularities are critical points of band structure. We find an intriguing connection between these two critical points. Published in PRB Letters: doi.org/10.1103/PhysRevB.111…
The most motivating student feedback I received on my course on Open Quantum Systems : "Instructor's love and endless curiosity about the subject material is inspiring and contagious." I hope to remain contagious for as long as possible, till 'the system' breaks me.
I just learnt about arxiv++. Mind blown! It almost perfectly summarizes papers on arxiv. You just have open the abstract page on arxiv! This is super helpful! Am I late to the party? Is everyone already using it? arxivpp.com/
Inviting applications for faculty positions [Asst. Prof] in IITH, on Quantum Technology related topics, like NV centers, superconducting circuits, cold atoms, quantum error correction, unitary circuits etc (Expt and Theory): Deadline: Nov 1, 2024. iith.ac.in/assets/files/care…
A new tensor network based numerical technique to directly extract the completely positive trace preserving (CPTP) dynamical map of a quantum system strongly coupled to surrounding environment: arxiv.org/abs/2409.17051. CPTP maps are fundamental objects in quantum information.
This paper highlights the difference between thermalization in Open Quantum Systems (OQS) and Isolated Quantum Systems (IQS). It matured like fine wine over the years! Two authors were postdocs when it started, and now about a year into faculty positions! arxiv.org/abs/2409.11932
These two took a long time! Fascinating how maths can connect two types of physics usually discussed in completely different settings: exceptional points and van-Hove singularities and fermionic transport: arxiv.org/abs/2408.10103 arxiv.org/abs/2407.10884
Best student course-feedback on "Advanced numerical methods for quantum many-body physics", which mainly focused on gate-based quantum dynamics:
"As the name suggests the course is indeed advanced. Hope it has some application in real life; doubtful about it though."
Observing non-equilibrium transitions by putting detectors at various places of a quantum system, and checking the number of times they click simultaneously, bypassing the need to repeat the experiment several times to obtain expectation values. doi.org/10.1103/PhysRevA.109…
Dissipation in a quantum system typically takes it towards a steady state. But starting the dynamics from the steady state itself can take much longer to relax back than starting from some special states, like hot water cooling faster: arxiv.org/abs/2402.05756
Call for application in IITH Institute PostDoc Fellowships is out. Deadline for application is Feb 26.
#IITHAmazingAnnouncement #IITHIPDF
@IITHyderabad is thrilled to announce the commencement of applications for the #IITH Institute Post-Doctoral Fellowships (IITH-IPDF) across various disciplines of Science & Technology. This is an opportunity for self-motivated and accomplished PhD scholars eager to collaborate on cutting-edge research in the realms of science and technology.
Highlights:
No. of Fellowships: 50
Stipend: 75,000 INR/ Month
Duration: One year, with the possibility of renewal for an additional year based on satisfactory performance.
Accommodation: On-campus accommodation will be provided.
Submission of Applications: Feb 1 to Feb 26, 2024
Announcement of results: Mar 31, 2024
Research Focus: Open to all disciplines
Eligibility: Applicants must hold a PhD degree in a relevant field from a recognized university (IITH PhD graduates are NOT eligible). Those who submitted the thesis are also eligible.
More details and Application Form: iith.ac.in/news/2024/01/31/I…
About IITH-IPDF:
The IITH-IPDF is designed to attract exceptional scholars keen on engaging with IITH faculty mentors in pioneering research. The program aims to groom scholars for independent academic and research careers by providing a platform for collaboration and exploration. This is an incredible opportunity to be part of a vibrant academic community and contribute to ground-breaking research at IITH.
#postdoctoralfellowship #phd #postdoc #postdoctoral
@PMOIndia @EduMinOfIndia
ArchakP retweeted
#MomentofPride
@IITHyderabad congratulates Mr Apan Dinda, Ms Mrinmoyee Saha, and Mr Pitambar Bagui, MSc, Department of #Physics, for being awarded the prestigious Chanakya Post-graduate Fellowships from I-HUB Quantum Technology Foundation (I-HUB QTF).
Apan, Mrinmoyee, and Pitambar are working under the supervision of Dr Archak Purkayastha and expressed gratitude to their mentor for his continuous support.
@PMOIndia @EduMinOfIndia
Here is a blog written on our recent work: blog.icts.res.in/blog/resear…
It is about this paper: doi.org/10.1103/PhysRevB.108…
where we found that in small wires, due to surrounding environment, resistance can decrease with length.
@ictstifr @IITHyderabad @IISERPune
Opening the possibility to convert unwanted intrinsic noises in quantum devices into potentially useful quantum light (antibunched radiation). [Also may be the first suggestion to utilize the ubiquitous 1/f noise.] Fresh from PRA: doi.org/10.1103/PhysRevA.108…
@IITHyderabad @CCQcenter
