Data Biz Times
No Result
View All Result
Sunday, June 1, 2025
  • Login
  • Home
  • Tech
  • Start up
  • Economy
  • Markets
  • Real Estate
  • Opinion
  • Others
  • Privacy Policy
  • Advertise
Subscribe
Data Biz times
  • Home
  • Tech
  • Start up
  • Economy
  • Markets
  • Real Estate
  • Opinion
  • Others
  • Privacy Policy
  • Advertise
No Result
View All Result
DataBizTimes
No Result
View All Result
Home Technology

New portable atomic clock from India offers accurate timekeeping at sea

by databiztimes.com
23 October 2024
0
New portable atomic clock from India offers accurate timekeeping at sea
Share on FacebookShare on Twitter

DBT Bureau

Pune, 23 Oct 2024

A team of researchers working with cold Rydberg atoms has improved quantum magnetometry, making atomic clocks and magnetometers more accurate and reliable for navigation, telecommunications, and aviation. Rydberg atoms are excited atoms with electrons at high energy levels, and scientists use a method called Electromagnetically Induced Transparency (EIT) to study them.

This new technique helps achieve better timekeeping and magnetic measurements, which are important for many applications.
Researchers at the Raman Research Institute (RRI) have leveraged the Doppler effect to their advantage and achieved a ten times enhanced response to the magnetic field while performing quantum magnetometry (phenomenon exploiting the quantum nature of light and atoms for precision measurement of magnetic fields) on thermal rubidium atoms using Rydberg Electromagnetically Induced Transparency (EIT) in a room temperature-based environment.

Electromagnetically Induced Transparency (EIT) is a fascinating phenomenon that makes an opaque medium transparent, can slow down light pulses to crawling speeds and even trap light inside atomic media. EIT has led to a myriad of important applications in precise atomic clocks, atomic magnetometers and quantum computation. EIT generally occurs in a three-level atomic system involving two atomic transitions addressed by a weak probe laser beam and a strong coupling laser beam.

Scientifically, interference occurs when a wave can travel between two points via multiple paths, either resulting in their enhancement or cancellation. On similar lines, an atom can transition between multiple quantized energy levels by different routes that can interfere. This determines the amount of light an atom absorbs.

Similar to the interference of light, where constructive interference gives bright fringes and destructive interference gives dark fringes, the probabilities of atomic transitions between these energy levels can also interfere destructively, known as quantum interference. It can result in atoms in a dark state not absorbing the probe light and thereby render the atomic medium transparent. This phenomenon is called Electromagnetically Induced Transparency (EIT).

Deploying Rydberg EIT, the researchers detected atoms in their highly excited (Rydberg) states. Rydberg Electromagnetically Induced Transparency has a Rydberg state as one of the energy levels involved in the EIT process. Rydberg EIT signals were used to measure the response of the Rydberg atoms to the external magnetic field.

“When the Rydberg EIT was observed in an unconventional configuration of the probe and the coupling beam, where the Doppler shift was not compensated, an enhanced response to the magnetic field was observed. It is the Doppler shift that causes a larger response of the Rydberg EIT signal to an externally applied magnetic field,” said Sanjukta Roy, Head of Quantum Optics with Rydberg Atoms Lab (QuORAL) at RRI, an autonomous institute of the Department of Science and Technology (DST).

Generally, Doppler shift is perceived as the change in frequency of a wave by a moving observer. When a laser beam flashes on atoms, their thermal motion leads to a Doppler shift – an atom moving towards the laser beam sees a higher frequency, whereas one moving away sees a lower frequency. This effect is generally assumed to be detrimental to sensing.

Cryogenically-cooled superconducting devices are useful for sensing ultra-weak magnetic fields.
Such Doppler-enhanced quantum Magnetometry offers a wide variety of applications ranging from geophysics to the detection of brain activity and mineralization to space explorations and archaeology.

Popular Stories

  • Top IT CEOs salary rise in FY24 despite slowdown blues

    Data Story: Operating margins of top Indian IT firms in FY25

    0 shares
    Share 0 Tweet 0
  • Data Story: Paradip Port Traffic Report for 31 May

    0 shares
    Share 0 Tweet 0
  • TCS CEO earns over Rs 26 crore as employee salaries see healthy hike

    0 shares
    Share 0 Tweet 0
  • Prof PR Mukund on his new book ‘Numbers & Symbols in Vedic Thought’ with Data Biz Times

    0 shares
    Share 0 Tweet 0
  • Data Story: Is Sonata Software a growth story?

    0 shares
    Share 0 Tweet 0

Recent News

IndiGo, BIAL sign MoU for MRO facility at Bengaluru Airport

IndiGo, BIAL sign MoU for MRO facility at Bengaluru Airport

Data Story: Base Metal Prices fixed by OMC

Data Story: Base Metal Prices fixed by OMC

Data story: Mumbai port Import/Export data comparison April 2025

Data story: Mumbai port Import/Export data comparison April 2025

June 2025
MTWTFSS
 1
2345678
9101112131415
16171819202122
23242526272829
30 
« May    

Categories

  • Artificial Intelligence
  • Authored Article
  • Automotive
  • Blog
  • Book Reviews
  • Business
  • Careers
  • Cryptocurrency
  • Data Story
  • Economy
  • Entertainment
  • Gadget
  • Markets
  • Media Release
  • Movie Review
  • Oil and Gas Industry
  • Opinion
  • Others
  • Politics
  • Real Estate
  • Sports
  • Start Up
  • Startup
  • Tech
  • Technology
  • Travel
  • Watches
  • world
  • world

Site Navigation

  • Home
  • Advertisement
  • Contact Us
  • Privacy & Policy
  • Other Links

Data biz times © 2024. All rights reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In

Add New Playlist

No Result
View All Result
  • Home
  • Tech
  • Start Up
  • Economy
  • Markets
  • Real Estate
  • Opinion
  • Others
  • Privacy Policy
  • Advertise

Data biz times © 2024. All rights reserved.