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The National Metrology Institute of India and A Premier Research Laboratory in the Field of Physical Sciences
Time and Frequency Standards

Our division is responsible for the highest level of time and frequency measurements in India and keeping them traceable to the the International Bureau of Weights and Measures (BIPM) using ultraprecise satellite links. In simple words, we maintain the Indian Standard Time (IST). The time keeping by us is based on a bank of Cesium (Cs) atomic clocks and a Hydrogen maser. These clocks are so accurate that they would lose or gain one second in about three lakh years. The traceability of our time scale with BIPM is at the level of few nano-seconds (ns). In addition, we carry out research and development on primary atomic clocks. Our first Cs fountain clock, with an accuracy of a few parts in 10-15, became operational in 2011. A second Cs Fountain is under development (project NOVOCEF). Recently, we have started developing a more accurate clock (≈10-17) at optical wavelengths based on a single trapped Ytterbium ion (project STIOS).

Contact:
Dr. A. Sen Gupta
Room: 128A, Main Building CSIR-NPL, Dr. K. S. Krishnan Rd.,
New Delhi -110012
Email: sengupta@nplindia.org
Ph: +91 4560 8343
Fax: +91 4560 9240

Research Activities:

   Precise Timing Systems

       -Maintenence of Indian Standard Time

       -Dissemination of Time

       -Calibration and Testing

   Microwave Frequency Standards

      -Cesium Fountain I and Cesium Fountain II

      - Rubidium Atomic Clock for Space

   Optical frequency Standard

      -Single trapped Ion Optical Standard(STIOS)

People:

Scientists and Technical Staff:

  1. Dr. Amitava Sen Gupta
  2. Mr. Kavindra Pant
  3. Mrs. Arunadhati Chatterjee
  4. Mr. A. K. Suri
  5. Dr. Ashish Agarwal
  6. Dr. Subhasis Panja
  7. Dr. Poonam Arora
  8. Dr. Subhadeep De
  9. Mrs. Pranalee Thorat
  10. Mrs. Suchi Yadav
  11. Mrs. Preeti Kandpal
  12. Mr. Mahavir Prasad Olaniya

Students and Project Fellow:

  1. Mr. Aishik Acharya
  2. Mr. Nirbindu Das
  3. Mr. Vattikonda Bharath
  4. Ms. Sathi Chakraborti
  5. Ms. Amrita Awasthi
  6. Ms. Swati Bansal
  7. Mr. Anirudh Thakur
  8. Ms. Himani Kohli
  9. Ms. Neha Batra
  10. Mr. Ashutosh Sinha
  11. Mr. Dynu K. Daniel
  12. Mr. Thangjam Jayenta Singh
  13. Mr. Vijay Kumar

Supporting Staff:

  1. Mr. Rakesh Kaushik
  2. Mr. Amar Singh
  3. Mr. Ved Prakash
  4. Mr. Ram Sajjan
  5. Mr. Harish Bisht
  6. Mr. Prem Chand
  7. Mr. Devender Kumar

Photo:

Find our photos at: https://plus.google.com/photos/108722323066025213151/albums

Drop your comment at :npli.time.frequency@gmail.com

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