Laboratory Research ProgramsE&ECE · IIT Kharagpur

Research ThemesProbing light. Engineering atomic devices.

We investigate the fundamental limits of light-matter interactions in low-dimensional quantum materials and engineer CMOS-compatible, packaged optoelectronic devices and cryogenic sensing systems.

Theme 01 · Exciton Physics Theme 02 · Quantum Materials Theme 03 · Cryogenic Spectroscopy Theme 04 · Emerging

END-TO-END TRANSLATIONAL FABRICATION PIPELINE

Research grade cryo optical lab space under development E&ECE

01/SYNTHESIS

2D Materials & Stacking

Atomic Layer Heterostructures

vdW StampingMoS₂ / WSe₂hBN Capped

Deterministic transfer of monolayer TMDs with sub-micron spatial registration.

02/DEVICES

Nanophotonic Fabrication

E-Beam LithoCMOS WGPhotonic Crystals

Sub-wavelength optical waveguides and high-Q microcavities integrated on SOI.

03/SPECTROSCOPY

Extreme Characterisation

Cryogenics & Quantum Optics

4 K CryoMicro-PLValley Polarization

Confocal Raman & ultrafast photoluminescence from deep cryogenic to ambient regimes.

04/TRANSLATION

Toward Applications

Future Translation

Cryo RF ProbingDevice ConceptsEarly Partners

Planned: carrying promising results toward foundry-compatible devices with partners.

Theme 01 · Fundamental Light-Matter Interactions

FabricationCharacterisationSimulation

Exciton Physics in 2D Materials

One sentence a non-specialist can follow: what you make and why it matters.

Our research focuses on the excitonic interactions in monolayers and heterostructures. We explore the fundamental limits of light-matter interactions at the nanoscale,focusing on the complex, multi-particle quantum phenomena that emerge within low-dimensional systems.

Experimental Equipment & Cleanroom Facilities

Confocal SpectroscopyCleanroom Lithography4 K Cryogenics

Theme publications & preprints Join this research strand

Sub-Picosecond Exciton Lifetimes · Valley Polarized

Theme 02 · On-Chip Semiconductor Heterostructures

DevicesOn-chipModelling

Quantum Materials and Devices

One sentence a non-specialist can follow: what you make and why it matters.

Our research aims to engineer quantum materials and heterostructures with tailored optical and electronic properties for applications ranging from quantum photonics to quantum information processing.

Experimental Equipment & Cleanroom Facilities

Confocal SpectroscopyCleanroom Lithography4 K Cryogenics

Theme publications & preprints Join this research strand

CMOS Waveguide Integrated · Zero Dark Current

Theme 03 · Extreme Diagnostics & Quantum Metrology

SensingInstrumentationTranslation Research

Cryogenic Spectroscopy and Sensing

One sentence a non-specialist can follow: what you make and why it matters.

This vertical serves as our diagnostic and discovery engine, probing the coupled spin-valley physics and optical degrees of freedom of quantum devices under extreme physical conditions.

Experimental Equipment & Cleanroom Facilities

Confocal SpectroscopyCleanroom Lithography4 K Cryogenics

Theme publications & preprints Join this research strand

4 K Cryostat (Under Development) · Magneto-Optics (through external collab.)

Theme 04 · Exploratory & Deep-Tech Hardware Frontiers

EmergingCollaboration

Emerging / Interdisciplinary

The bet you are making on where the field goes next.

The exploratory strand — collaborations, new directions, work that is not yet published. This is where we show ambition rather than results.

Experimental Equipment & Cleanroom Facilities

Confocal SpectroscopyCleanroom Lithography4 K Cryogenics

Theme publications & preprints Join this research strand

Exploratory · Collaboration-Driven

Laboratory FacilitiesCleanroom & Optics Benches

Experimental & diagnostic capabilities

The floorplan and lab area for ALO at E&ECE have been commissioned. Each instrument below shows its current stage — none are operational yet; we post an update as each one comes online.

Follow our progress

Planned

4 K Closed-Cycle Optical Cryostat (CCR)

Closed-cycle helium optical cryostat (under development) with ultra-low thermal vibration (< 5 nm RMS) tailored for magneto-optical transmission, reflection, and high-frequency RF electrical probing.

Target specifications

Magneto-optical vector magnetic field
Continuous variable temperature control
4 K optical sample chamber

Planned

Micro-Photoluminescence & Raman Spectroscopy

Custom-built high numerical aperture confocal microscope with multi-wavelength laser excitations (405nm, 532nm, 633nm) coupled to deep-cooled CCD spectrometers.

Target specifications

Sub-micron spatial spot size (< 800nm)
Ultra-low frequency Raman (< 10 cm⁻¹)
Polarization-resolved valley analysis

Planned

Deterministic 2D Heterostructure Transfer Bench

Dry viscoelastic stamping station equipped with motorized micromanipulators, heated vacuum chuck, and long-working-distance optics for stacking van der Waals heterostructures.

Target specifications

Motorized heated stage (up to 200°C)
Sub-micron rotational & spatial alignment
Inert ambient isolation for reactive TMDs

Planned

RF Wafer Probe Station

High-speed electro-optic characterisation setup featuring motorized 6-axis fiber-to-chip grating couplers, high-bandwidth optical receivers, and low-noise source meters.

Target specifications

Automated wafer-scale fiber array alignment
Low-noise dark current probing down to pA
RF microwave coplanar waveguide probes

Research Partnerships

Propose a collaboration or joint experiment

We actively collaborate with international photonics groups, semiconductor foundries, and academic partners on joint research grants, student co-supervision, and measurement campaigns.

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