ArchakP

Assistant Professor in Physics @IITHyderabad, previously post-doc @CCQcenter, MSCA-IF @QuSysTCD ......will be talking mainly about recent research works....

[ArchakP @Archak_physics]

Introducing "Quantum non-Markovian Hatano-Nelson model": https://t.co/sVRn8QdxrO
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.]

[ArchakP @Archak_physics]

Making our recently discovered extreme non-Markovian quantum Mpemba effect https://t.co/7xQX2uXvyf relevant for quantum impurity model simulations: "Accelerated calculation of impurity Green's functions exploiting the extreme Mpemba effect" https://t.co/8cswwItvqb

[ArchakP @Archak_physics]

@IITHyderabad @ictstifr

[ArchakP @Archak_physics]

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: https://t.co/AwojjeSGst

[ArchakP @Archak_physics]

@Quantumchahnel I am too lazy to type them up. Also, I am not sure it works that way. Surely, many books are better.

[ArchakP @Archak_physics]

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.

[ArchakP @Archak_physics]

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? https://t.co/76V6iGz44z

[ArchakP @Archak_physics]

@MarkMitchison @ASPECTS_quantum @ambercentre @FightingWordsIE So similar to the old Mr. Tompkins books of George Gamow. Pretty cool!

[ArchakP @Archak_physics]

@MarkMitchison @ASPECTS_quantum @ambercentre @FightingWordsIE A book on what?

[ArchakP @Archak_physics]

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. https://t.co/MF7GlLrKw8

[ArchakP @Archak_physics]

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: https://t.co/G3geW7ojbV. CPTP maps are fundamental objects in quantum information.

[ArchakP @Archak_physics]

@PennyLaneAI I always thought and taught that the time order exponential only meant discretizing t in steps of dt, assuming H(t) is constant within each dt, and evolving sequentially with such H's. I believe this idea is more physical and less misleading than the connection with Dyson series.

[ArchakP @Archak_physics]

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! https://t.co/pSYVBBVEf6

[ArchakP @Archak_physics]

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: https://t.co/X1n1fEqcSL https://t.co/45bn4xGgYY

[ArchakP @Archak_physics]

@NEQphysics Pulci made it to news articles!

[Gabriel Landi @landi_qt2]

Open quantum system in the strong coupling regime be Iike

[ArchakP @Archak_physics]

@landi_qt2 Perfect!

[ArchakP @Archak_physics]

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."

[ArchakP @Archak_physics]

@HaukeGroup Just sharing some of our works in this direction: "Periodically refreshed baths to simulate open quantum many-body dynamics" https://t.co/iYTQGGmORI, "Tensor-Network Method to Simulate Strongly Interacting Quantum Thermal Machines", https://t.co/LqQoB6HsOI

[ArchakP @Archak_physics]

@ThomasJ02 @michael_nielsen Feynman and Hamming does not seem at odds with each other. Feynman is defining important problems as those one can make some positive progress on. So, he is asking a researcher to believe all such problems are important.