Subhadeep Chakraborty

Trying to understand quantum condensed matter physics and 64 squares of the chessboard,
PhD Student, IISER Kolkata
MSc, IIT Kharagpur
BSc, Visva-Bharati

[Physics Magazine @PhysicsMagazine]

Researchers have now clarified the conditions under which the mathematical formalism of quantum mechanics can be expressed wholly in real—as opposed to complex—numbers. The effort challenges physicists to rethink the basic notions of quantum information. https://t.co/v4O2ZUu5P5

[Physical Review Letters @PhysRevLett]

Quantum Mechanics Based on Real Numbers: A Consistent Description
A physically motivated multipartite flag state allows quantum mechanics to work with real numbers instead of complex numbers.
PRL: https://t.co/Ia2nBEACXL #OpenAccess
PhysMag: https://t.co/emsIlaZsMh

[Interesting Engineering @IntEngineering]

Researchers identified a physically motivated alternative that gives rise to a class of theories that can be formulated with real numbers. https://t.co/EHRcnV3l5y

[Nanotechnology Papers @NanotechPapers]

Synthetic Flat Bands, Hierarchical Topology, and Phase-Fluctuation-Insensitive Quantized Transconductance in Josephson Junctions

Subhadeep Chakraborty, Aabir Mukhopadhyay, Udit Khanna, Sourin Das
https://t.co/dH6srXsn8Q [𝚌𝚘𝚗𝚍-𝚖𝚊𝚝.𝚖𝚎𝚜-𝚑𝚊𝚕𝚕]

[Subhadeep Chakraborty @Subho_physics]

Monopolar continuum enables quantized transport, while dipolar Andreev bands offer a platform to prepare phase-fluctuation–insensitive Andreev qubits, transcending from conventional "sweet spots" to "sweet plateaus".

[Subhadeep Chakraborty @Subho_physics]

We uncover a hierarchy of topological phases (defined in the synthetic Brillouin zone constructed from independent superconducting phase biases) in the BdG spectrum of a 3-terminal Josephson junction. (1/2)

https://t.co/FDvHJWmfkw

[Physical Review X @PhysRevX]

Researchers show that persistent spin currents in superconducting altermagnets offer a dissipationless mechanism for spin transport that could enable the development of high-efficiency spintronic computer chips.

Read their paper: https://t.co/FoNUcw4LZp

[Subhadeep Chakraborty @Subho_physics]

Phys. Rev. B 110, 155424 (2024) - Robust Majorana bound state in pseudospin domain wall of a two-dimensional topological insulator https://t.co/8M7zA7OrXi

[Martin Bauer @martinmbauer]

General relativity is often called geometric, but special relativity is also a geometric theory

It explains moving at different speeds as rotations in spacetime, similar to the way we explain looking in different directions as rotations in space

Some math in this 🧵1/12

[Subhadeep Chakraborty @Subho_physics]

We show the emergence of a helical edge state (HES) at the composite domain wall of spin and pseudospin DOF of a 2D topological insulator. This emergent HES hosts Majorana bound states which are exceptionally robust against disorder.

https://t.co/91T8DNhJ7o

#Majorana #arXiv

[Subhadeep Chakraborty @Subho_physics]

characterized by a Real space Winding number which is equal to their energy quantum number. This real space winding of the spin-textures is electrically controllable and can be read off via the TMR response of a spin-polarized lead akin to a Dutta-Das spin transistor. [2/2]

[Subhadeep Chakraborty @Subho_physics]

We show that Volkov-Pankratov states localized at the quantum spin-Hall edge possess non-trivial real space spin textures [1/n]

https://t.co/D4XIBQA6B0

#VolkovPankratovStates #MesoscopicPhysics #Supersymmetry #NewJournalofPhysics #IOPScience #Spintronics #SpinTransistor #TMR

[Universal Curiosity @UniverCurious]

When water flows so smoothly it looks solid. This effect is called Laminar flow.

[Subhadeep Chakraborty @Subho_physics]

@HRDG_CSIR

HRA of amount Rs. 7440 is missing for the May, 2021 month fellowship.

Kindly correct it.

File No. - 09/921(0319)/2020-EMR-I
Bill No. - BILL/EMR/14062021/021955

[Subhadeep Chakraborty @Subho_physics]

@HRDG_CSIR
Fellowship of May month is showing payment in progress but amount is Rs. 31000. HRA of amount Rs. 7440 is missing. Kindly correct it.

File No. - 09/921(0319)/2020-EMR-I
Bill No. - BILL/EMR/14062021/021955

Institiute - IISER Kolkata

[Subhadeep Chakraborty @Subho_physics]

@HRDG_CSIR May, 2021 fellowship showing of amount 31000. HRA is missing.
KIndly correct it.

Fill No. - 09/921(0319)/2020-EMR-I
Bill No. - BILL/EMR/14062021/021955

@HRDG_CSIR

[Subhadeep Chakraborty @Subho_physics]

@HRDG_CSIR
My April, 2021 fellowship is pending.

File No. - 09/921(0319)/2020-EMR-I
Bill No. - BILL/EMR/12052021/019058

Do I need to register this at grievance portal ?

[Subhadeep Chakraborty @Subho_physics]

@HRDG_CSIR

My April, 2021 fellowship is pending.

File No. - 09/921(0319)/2020-EMR-I
Bill No. - BILL/EMR/12052021/019058

Do I need to register this at grievance portal ?

[Subhadeep Chakraborty @Subho_physics]

@HRDG_CSIR Sir,

My April month fellowship is pending ( showing payment in progress ). Does that come under offline fms ? To get that, do I need to log in to grievance portal ?

[Subhadeep Chakraborty @Subho_physics]

@Pallavi2529 @HRDG_CSIR @shekhar_mande @Scholarsense @AIRSA_Hike @ResearchSchola6 Can you kindly tell me what was your bill processing date ?