Dr Bhanu Pratap Das, the top boss of the city's Indian Institute of Astrophysics, has known Dr Wineland since 1984, when both were involved in academic works in Colorado, USA. The scientists kept in touch even after Das left his job in the US and moved back to India few years later. In 2010, Wineland asked Das to contribute in a project that eventually got him the Nobel Prize in 2012. The latter's work was published at a journal in March 2011.
Meanwhile, two of the major applications of 'ground-breaking experimental methods which enable measuring and manipulation of individual quantum systems' that got the 2012 Physics Nobel Prize are building a new type of super computer based on quantum physics and the construction of extremely precise clocks that could become the future basis for the new standard of time.
Das who has had keen interest in the construction of extremely precise clocks and has some work to his credit in this field, said, Cesium ions had been used to measure time accurately until scientists like Wineland started using Aluminum ions which got better results.
"The time taken by a Cesium ion to give out a frequency of 9192631770 Hz was considered the most accurate calculation for a second," he said. "Until scientists started to experiment with aluminum ions."
Das says that Wineland asked him to reduce the error.
"He was not very sure whether the black body radiation figures were correct or not," he said.
Blackbody radiation refers to an object or system which absorbs all radiation incidents upon it and re-radiates energy which is characteristic of this radiating system only, not dependent upon the type of radiation which is incident upon it.
Das, along with two of his former students, HS Nataraj and BK Sahoo and two foreign research collaborators, Lucas Visscher and Mihaly Kallay, were able to conclude their theoretical experiments in less than a year.
"Our Blackbody Radiation Shift calculation had improved the systematic error by about 28 percent," said Das.
The current systematic error in blackbody radiation shift, after Dr Das's work, stands at nine in a billion instances.
Wineland in his Nobel acceptance lecture talked to the audience at the Stockholm City Hall, comprising of a large number of scientists, about atomic clocks and other aspects of quantum physics, in a language that's barely understandable to anyone without a master's degree in physics.
"His main interest is to develop far more accurate clocks than we have today," said Das.
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