Recent News : Events

The Department of Physical Sciences will be hosting a two-day national conference on the 25th and 26th of October, 2024. Participation in the conference is by invitation only. Please find the details in the attached document.

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Posted on: October 24th, 2024

A 4-day international conference on Foundations of Quantum Mechanics

A hundred years of the development of quantum mechanics is approaching. As we know, speedy developments happened from 1924 to 1927. Even though we are approaching a century of its existence, many problems relating to the foundations of quantum mechanics remain unsolved.

The Department of Physical Sciences of IISER Kolkata is organizing an international conference focused on the foundational problems of quantum mechanics. The timing is meant to commemorate Prof Satyendra Nath Bose’s momentous contribution in 1924.

Venue: Indian Institute of Science Education & Research Kolkata

Dates: 18-21 December 2024

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Posted on: September 2nd, 2024

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Date: 25th August 2024

Time: 2:00 PM IST

Venue: Asima Chatterjee Lecture Theatre, 2nd Floor, RC

This unique initiative by Gluon offers the younger members of DPS, along with other BS-MS students, a platform to share their insights with peers. In our opening session, six speakers will present their ideas on various fields, ranging from astrophysics to condensed matter physics.

Speakers:

1. Archis Mukhopadhyay: Looking for magnetized jellyfish in a toy Universe

Abstract: Large scale cosmological hydrodynamical simulations can provide us with a wide range of information about galaxies, galaxy clusters, and the multiphase gas in and around galaxies. They provide us with large samples of galaxies in realistic environments, and allow us to infer information about galaxies at a population level. In this talk, I will give a brief introduction to IllustrisTNG, how large simulation data is handled, and the preliminary results from my analysis.

2. Bhaskar Barman: Hot electron relaxation in Metals

Abstract: In this talk we will review of the phenomena related to non-equilibrium electron relaxation in metals using two temp. model .Considering the Boltzmann-Bloch-Peierls (BBP) kinetic equation ,we will find the net phonon generation rate and derive the average energy transfer relation between electron and phonon in low and high temperature limit .

3. Sabarinath M D: Mapping the moon

Abstract: The talk will cover the procedures involved in element mapping on Lunar Surface, using the data of Chandrayaan 2 CLASS payload. I shall also tell about the practical difficulties and some unique findings on the moon surface during the internship. I will provide some interesting methodologies employed and some great features of the X ray range emissions of the moon.

4.Rohan Kumar: Developing a flare detection pipeline to characterize the flare frequency distribution around low mass stars

Abstract: In this talk , I am going to discuss my work related to developing a stellar flare detection pipeline in Python. It has been tested it on optical light curve data from NASA\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'s Transiting Exoplanet Surveyed Satellite. Our pipeline can be broken down into two steps; first, we detrend the light curve to remove the long-term variation or quasi-periodic stellar rotation from the light curve; second, we search for the flares in the detrended light curve. The flare search is performed by classifying significant contiguous outliers, which makes the detection entirely data-driven.We performed injection-recovery tests to tune the flare search parameters to maximize the detection efficiency while keeping the false positive rate low. Our injection recovery test clearly shows the importance of higher cadence observations and the optimal flare search parameters. Our pipeline will ultimately be used to generate flare frequency distribution for mid-to-late M dwarfs.

5.R.Pradeep: Quantum Communication methods for secure communication: Quantum key distribution, Quantum secret sharing and Quantum dialogue protocols.

Abstract: Secure communication between parties can be done using the quantum properties like superposition and entanglement. If security is based on one way computable functions like prime factorisation , it could bee broken through quantum algorithms like Shors algorithm. If we design our security based on laws of quantum mechanics then it would be unconditionally secure and some of the few standard methods will be discussed in this talk.

6.Sanghamitra Basu: Exploring stress and strain in doped β-Ga2O3 crystals.

Abstract:Powder X-ray diffraction studies were conducted on undoped β-Ga2O3 crystals and nine samples doped with various 3d transition metals, starting from Scandium. Our comparative analysis focused on the chemical pressure induced within the lattice by the different dopants used such as strain and twist. Experimental data was fitted using the FullProf Suite, employing the Profile Matching with Constant Scale Factor method to extract precise lattice parameters. Additionally, the Modified-Williamson Hall plot was utilized to investigate the variations in mechanical microstrain along different crystallographic directions and across the doped samples. We additionally annealed 2 samples (undoped and V-doped) to see the changes in microstrain using the same Modified Williamson-Hall method. This comprehensive study provides new insights into the structural and mechanical impacts of transition metal doping in β-Ga2O3 crystals.

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Posted on: August 23rd, 2024

The nuclear beta decay revealed the existence of neutrino more than eight decades ago, but the neutrino still continues to be a puzzle waiting to be unravelled. The mass and nature of neutrinos play an important role in physics beyond the standard model. At present, neutrinoless double beta decay (NDBD) is perhaps the only experiment that can tell us whether or not the neutrino is its own antiparticle. Given the significance of the NDBD, there is a widespread interest worldwide employing a variety of novel techniques. This talk will present a brief report of ongoing and proposed NDBD experiments and will highlight Indian efforts towards the feasibility study of search for NDBD in 124Sn.

Time: Wednesday, August 7

Venue:Asima Chatterjee Lecture Theatre

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Posted on: July 30th, 2024

Physics days is an annual celebration of Physics conducted by the Department of Physical Sciences and associated Centres at IISER Kolkata. This year's celebration focuses on astronomy, astrophysics and space science research pursued by the Center of Excellence in Space Scienes India (CESSI), which has completed 10 years of functioning. An additional theme centres around quantum information and technology pursued at the Physics Department. Several talks by invited speakers and our senior PhD students, and a poster session will provide a flavour of both the national scenario, as well as research highlights from IISER Kolkata.

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Posted on: March 6th, 2024

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A two-day workshop on “Correlated Quantum Matter” is to be held in IISER Kolkata between 18-19 April 2024. The workshop would bring together leading practitioners of quantum condensed matter physics from the country and abroad to discuss the latest developments in the field.

Correlated quantum many-body systems have played an important role in our understanding of fundamental phenomena in nature from symmetry breaking to topological phases of matter. Emergent properties in these systems have led to diverse phenomena from superconductivity to spin liquids to the quantum hall effect. Correlated quantum matter is also intrinsically tied to the development of modern quantum technologies like quantum computing, quantum sensing, etc. In this context, this workshop will not only lead to a discussion on this timely topic, but it would also be a great opportunity for students and postdocs of IISER Kolkata to be exposed to the frontline research topics in this field.

Among other speakers, Prof. Mohit Randeria and Prof. Nandini Trivedi of Ohio State University, USA, will participate in the workshop and each of them will deliver a DPS colloquium (on 18 and 19 April 2024), which will also be a part of this workshop. We hope that our PhD students, postdocs, and colleagues, particularly those working in the broad area of condensed matter physics, will benefit from the informal academic discussions throughout this workshop.

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Posted on: March 1st, 2024

We have the fun-filled DPS picnic on the 3rd of February, 2024. Thanks to all the volunteers ..

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Posted on: February 10th, 2024

The DPS will be hosting its Annual Research Meet this year on 19-20 January 2024. The program will showcase the research activities of the faculty members and postdocs carried out during the last year. Please find the detailed program in the attached document.

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Posted on: February 5th, 2024

Gluon is extremely thrilled to announce the long anticipated event Equituition! For those probably wondering what this is all about : An integration bee kind of setting where instead of integration, one needs to find a governing model equation of the system introduced in the problem. Who all can participate : With questions catering to varying levels of difficulty, everyone from every academic level is encouraged to participate - we don\'t discriminate here at Gluon. Why you should join: If the joy of problem solving is simply not enough to remove the inertia, most certainly the glory and fame of the crown will do the job. And if you want something more - worry not, since three exciting prizes will await shall fate bless you in the battlefield. The space time coordinates : (16/09/23-17:30, G, 0, 6) Registration Link : https://docs.google.com/forms/d/e/1FAIpQLSfAW3Xe1XouLfUK_HGQGO-6JRka8ZCim0LvUVW6MzWIf9pSVw/viewform

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Posted on: September 13th, 2023

The 2nd Bibha Chowdhuri Memorial Lecture in celebration of women in science will be delivered by Prof. Aditi Sen De of Harish-Chandra Research Institute, Allahabad.

Dr. Bibha Chowdhuri was the first Indian woman to earn a Ph.D. in Physics. Her work laid down the path towards the discovery of the pion - a short-lived, unstable subatomic particle that showers from high-energy cosmic ray collisions. As a token of recognition for her contributions to astronomy and astrophysics, the International Astronomical Union has re-christened the star HD 86081 as Bibha (a yellow-white dwarf star in the constellation Sextans south of the celestial equator) after her.

Title: Quantum Networks

Abstract: The quantum theory of nature, formalized in the first few decades of the 20th century, contains elements that are fundamentally different from those required in the classical description of nature. Based on the laws of quantum mechanics, in recent years, several discoveries have been reported that can revolutionize the way we think about modern technologies. I will talk about such inventions in the field of communication and some of our recent results in building quantum networks.

Date: Wednesday, August 2, 2023

Time: 3.00 – 4.00 PM (IST)

Venue: Asima Chatterjee Lecture Theatre

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Posted on: August 2nd, 2023

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Vigyan Pratibha (https://vigyanpratibha.in/) is organizing a workshop for school teachers at IISER Kolkata during 17-21 July 2023. Dr. Deepa Chari from Homi Bhabha Center of Science Education (HBCSE) will be with us on Monday (17th July) and she will brief us about Vigan Pratibha and its activities. She will also discuss how you can contribute to the program. The full program is attached as a pdf document. On behalf of IISER Kolkata, the program is coordinated by Prof. Pradeep Kumar Mohanty of the Department of Physical Sciences.

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Posted on: July 26th, 2023

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In honor of our senior colleague Prof. Prasanta K. Panigrahi turning 65 this June 2023, we will be having Rapid Talks with the theme "Physics Trends @ IISER Kolkata" from 28th - 29th June 2023. Most of the talks will be by research scholars/postdocs of IISER Kolkata. The event will start on the 28th with an opening short remark by Prof. Bedangadas Mohanty, NISER. On the evening of 28th June, a felicitation program will be arranged.

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Posted on: June 26th, 2023

Annual DPS Day will be hosted on the 17th and 18th of March 2023. The main theme of the DPS Day will be "Quantum Entanglement and Quantum Information Science" in view of the recent Nobel Prize in Physics.

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Posted on: March 16th, 2023

We hosted an internal research meeting on the 10th and 11th of February 2023 where all faculty members discussed their recent research work.

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Posted on: February 11th, 2023

Is there a better way to spend a Winter day than having a departmental picnic?

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Posted on: February 5th, 2023

Prof. Yuval Gefen, The Isabelle and Samuel Friedman Professor of Theoretical Physics , The Weizmann Institute of Science, Israel gave an Institute Colloquium titled Weak Measurements: A peephole to the quantum world

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Posted on: January 17th, 2023

32nd Meeting of Indian Association for General Relativity and Gravitation (IAGRG32) hosted by IISER Kolkata Department of Physical Sciences at Indian Institute of Science Education and Research Kolkata from 19th to 21st December, 2022.

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Posted on: December 18th, 2022

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The DPS @9th Convocation

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Posted on: July 14th, 2022

The Department of Physical Sciences will host its annual day this year on March 5, 2022 (Saturday)

DPS Day 2022 Schedule:)

10h00-10h30 Welcome by Director & Head

10h30-11h00 Faculty presentations (~5 minutes)

11h00-11h30 Tea/Coffee break

11h30-13h00 Faculty presentations (~5 minutes)

13h00-14h30 Lunch (Packets)

14h30-17h00 Poster (by students & postdocs)

15h30 Tea/Coffee at the poster venue

March 4, 2022

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Posted on: March 4th, 2022

The DPS will celebrate its 10 years of existence through a 3-day conference during February 23-25, 2019. See the event schedule for the details.

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Posted on: February 15th, 2019

The Asia Pacific Conference and Workshop on Quantum Information Science to be held during 19-23 December 2018 at DPS, IISER Kolkata.

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Posted on: December 3rd, 2018

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The National Workshop on Studies at Extreme Conditions of Pressure and Temperature will be held at IISER Kolkata during Mar 29-30, 2018.

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Posted on: March 20th, 2018

Workshop on Top Quark Physics at Present and Future Collider during 27-30 January, 2018 at the Department of Physical Sciences IISER Kolkata.

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Posted on: January 20th, 2018

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A two-day workshop is being organized at DPS on “Frontiers areas in Condensed Matter and Statistical Physics” during February 23 - 24, 2018. Organizers: Subhasis Sinha, Bhavtosh Bansal, Supratim Sengupta and Siddhartha Lal

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Posted on: January 18th, 2018

The DPS Day for the academic year 2017-2018 is being celebrated on 13th January 2018. The invited speakers for the event: Prof. Somak Raychaudhry, IUCAA, Pune; Prof. Ashok Chatterjee, HCU; Prof. M. Krishnamorthy, TIFR, Mumbai; and Prof. Surajit Sengupta, TIFR Hyderabad.

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Posted on: December 30th, 2017