Naresh Emani

Naresh Emani

Associate Professor of Electrical Engineering

Indian Institute of Technology Hyderabad


Welcome to the Nanophotonics Lab at the Indian Institute of Technology Hyderabad. Our research efforts are broadly in the area of Nanophotonics: the science of interaction of light and matter at the nanoscale to enable on-chip devices. We are interested in exploring novel phenomena in nano and micro-scale optics and semiconductors for next generation computing, renewable energy and environmental sensing.

The Principal Investigator, Dr. Naresh Kumar Emani, is a member of faculty of the Department of Electrical Engineering at IIT Hyderabad. For more details, please see his current CV.


  • Nanophotonics
  • Semiconductor Optoelectronics
  • Plasmonics and Metamaterials
  • Nanofabrication


  • PhD in Electrical Engineering, 2014

    Purdue University

  • MTech in EE (Microelectronics), 2007

    Indian Institute of Technology Bombay

  • BSc(Hons) and MSc in Physics, 2005

    Sri Sathya Sai Institute of Higher Learning



Associate Professor

Indian Institute of Technology Hyderabad

Sep 2022 – Present Hyderabad

Assistant Professor

Indian Institute of Technology Hyderabad

Jun 2017 – Sep 2022 Hyderabad


Data Storage Institute, Agency for Science, Technology and Research (A*STAR)

Dec 2014 – Jun 2017 Singapore
Research on light emitting devices based on GaAs and GaN Nanostructures.


Taiwan Semiconductor Manufacturing Company

Aug 2007 – Aug 2009 Hsinchu, Taiwan ROC
Development of advanced reliability characterization techniques for sub-45 nm node CMOS technologies.


Current research directions in our group

Our research interest lies at the intersection of photonics, semiconductor devices, material science and nanotechnology. We are interested in applying developments in these disciplines to advance the frontiers of Nanophotonics and it’s applications. Our ultimate goal is to evolve into a world-class research group, which will address the challenges at the frontiers of engineering and technology, while also innovating to address specific needs in the Indian society. Some of the broad themes that we are currently working are outlined below:

Dielectric Nanophotonics

In this project we are exploring methods to improve gain in Semiconductor Nanostructures, and using a combination of gain and loss to investigate PT symmetric nanoantenna arrays.

Electrical Excitation of Plasmons in Metallic Nanostructures

We are investigating designs to improve the efficiency of optical emission in plasmonic nanostructures

Team Members

Meet the team working in our lab

PhD Students
  1. Jinal Tapar [Aug 2017 - present] Jinal’s research is focused on novel nanoscale light sources based on semiconductor resonators.
  2. Saurabh Kishen [Nov 2017 - present] Saurabh’s research is focused on the study of electrical excitation of plasmons in metallic nanostructures
  3. Vinod Sharma [Aug 2019 - present] Vinod will be investigating Nanophotonic devices in the mid-infrared spectral range.
  4. Sourabh Singh Chouhan [Jan 2020 - present] Sourabh will be investigating Nanophotonic devices in the mid-infrared spectral range.
Postgraduate and Undergraduate Students
  1. Sandeep G [MTech, Jan 2019 - present]
  2. Gaurav Yadav [MTech, Aug 2018 - July 2020] Gaurav joined TSMC after graduation.
  3. Akshita Ramya [BTech, Aug 2019 - July 2020] Akshita will be going to Purdue University to pursue a PhD.
  4. Madhurima V [MTech, Aug 2017 - July 2019] Madhurima joined Qualcomm after graduation.


List of major publications

Full text of manuscripts below can be shared upon request.

  1. Saurabh Kishen, Jinal Tapar and Naresh Kumar Emani. Tunable directional emission from electrically driven nano-strip metal-insulator-metal tunnel junctions. Nanoscale Advances, 4, 17, (2022). [ doi ]
  2. Jinal Kiran Tapar, Saurabh Kishen and Naresh Kumar Emani. Generalized kerker effect in PT-symmetric nanoantenna array. Journal of Optics, 24, 3, (2022). [ doi ]
  3. Jinal Kiran Tapar, Saurabh Kishen and Naresh Kumar Emani. Dynamically Tunable Asymmetric Transmission in PT-Symmetric Phase Gradient Metasurface. ACS Photonics (2021). [ doi ]
  4. Jinal Kiran Tapar, Saurabh Kishen and Naresh Kumar Emani. Spectral singularities and asymmetric light scattering in PT-symmetric 2D nanoantenna arrays. Optics Letters, 45, 18, pp. 5185-5188 (2020). [ doi ]
  5. Saurabh Kishen, Jinal Kiran Tapar and Naresh Kumar Emani. Enhanced light emission from gap plasmons in nano-strip MIM tunnel junctions. Journal of Optics, 22, 095006 (2020). [ doi ]
  6. Jinal Kiran Tapar, Saurabh Kishen, Kumar Prashant, Kaushik Nayak and Naresh Kumar Emani. Enhancement of the optical gain in GaAs nanocylinders for nanophotonic applications. Journal of Applied Physics, 127, 153102 (2020). [  doi ]

See publications based on research before joining IITH »


Recent happenings in our group

  • April 2022 Dr. Jinal Tapar joined A*STAR Singapore as a scientist. Congratulations and best wishes for her career!
  • April 2022 Saurabh and Vinod presented their research at SPIE Photonics Europe held at Strasbourg, France.
  • October 2021 Jinal Tapar defended her thesis! Congratulations Dr. Jinal Tapar!
  • September 2020 Jinal presented her research at Frontiers in Optics conference held virtually this year. See the Dielectric Nanophotonics project for a video of the talk.
  • August 2020 Jinal’s research on Spectral singularities in 2D array of PT symmetric resonators is accepted for publication in Optics Letters.
  • August 2020 Saurabh’s research work on enhancing the efficiency of light emission from MIM tunnel junctions is published in Journal of Optics.
  • July 2020 Gaurav submitted his MTech thesis on Design of Programmable Delay Generator with 10 ps Resolution. He will be joining TSMC in their Physical Design department. Congratulations Gaurav and Good luck!
  • April 2020 Jinal’s work on Enhancement of optical gain in GaAs nanostructures is published in Journal of Applied Physics.


Information on joining us and other academic matters

We are always on the lookout for motivated students interested in pursuing research in our group. If you think you are a good fit please read the following guidelines

Internship/Project Associate/JRF positions

Please go through the research and recent publication sections carefully. You may not understand the details of the work but it will give you a sense of the type of the work we do. IITH faculty receive a large number of emails from prospective students, and it is not possible to respond to generic emails. Please state briefly your previous education, research/project experience and why you are interested in this work. A well-crafted email will improve your chances of getting a response.

IITH Students

If our research seems to be of interest to you, and you would like to do your project/thesis in our group, please think about the following:

  • What are end results you hope to achieve - Job, PhD, Post-doc, research exposure, etc?
  • Einstein once said “It’s not that I’m so smart; it’s just that I stay with problems longer.” You would be expected to work hard on your research topics, scientific communication and also contribute to the lab development.
  • Please go through some papers in the publications section, and see if you would enjoy working in this area. Also, talk to our group members to figure out if you would like the work we do and the way we do it.
  • Once you have done the above please send me an email to schedule an appointment to discuss potential openings.
Letters of recommendation

Letters of recommendation are an integral part of an academic career. I will be happy to write letters of recommendation if you meet the following criteria:

  1. You have worked on a significant research project with me as a advisor or co-advisor or doctoral committee member (for graduate students)
  2. You have taken atleast 2 courses that I offer at IIT Hyderabad, and have been an active participant in class discussions (for BTech students)
  3. And more importantly, you have discussed your plans with me well ahead of the deadline - atleast 1 month for BTech students and 1 semester for graduate students
  4. If you do not meet the above criteria then the most probable scenario is that I would write a generic letter. This will not help your chances, and you might be better off approaching some one who can give you a strong recommendation