Researchers develop new method for detecting superfluid motion

A group of researchers led by Associate Professor Mishkat Bhattacharya proposed a new method for detecting superfluid motion in a short article released in Physical Review Letters. Credit: Rochester Institute of Technology

Researchers at Rochester Institute of Technology belong to a new research study that might assist open the capacity of superfluids—basically smooth unique compounds efficient in unstopped motion as soon as started. A group of researchers led by Mishkat Bhattacharya, an associate teacher at RIT’s School of Physics and Astronomy and Future Photon Initiative, proposed a new method for detecting superfluid motion in a short article released in Physical Review Letters.

Scientists have actually formerly produced superfluids in liquids, solids, and gases, and hope utilizing superfluids’ residential or commercial properties might assist result in discoveries such as a superconductor that operates at space temperature level. Bhattacharya stated such a discovery might reinvent the electronic devices market, where loss of energy due to resistive heating of wires sustains significant expenses.

However, among the primary issues with studying superfluids is that all offered techniques of determining the fragile superfluid rotation bring the motion to a stop. Bhattacharya and his group of RIT postdoctoral researchers coordinated with researchers in Japan, Taiwan, and India to propose a new detection method that is minimally damaging, in situ, and in real-time.

Bhattacharya stated the strategies utilized to find gravitational waves forecasted by Einstein influenced the new method. The fundamental concept is to pass laser light through the turning superfluid. The light that emerged would then get a modulation at the frequency of superfluid rotation. Detecting this frequency in the beam utilizing existing technology yielded understanding of the superfluid motion. The obstacle was to guarantee the laser beam did not disrupt the superflow, which the group achieved by selecting a light wavelength various from any that would be soaked up by the atoms.

“Our proposed method is the first to ensure minimally destructive measurement and is a thousand times more sensitive than any available technique,” stated Bhattacharya. “This is a very exciting development, as the combination of optics with atomic superflow promises entirely new possibilities for sensing and information processing.”

Bhattacharya and his coworkers likewise revealed that the beam might actively control supercurrents. In specific, they revealed that the light might develop quantum entanglement in between 2 currents streaming in the very same gas. Such entanglement might be helpful for keeping and processing quantum info.

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More info:
Pardeep Kumar et al, Cavity Optomechanical Sensing and Manipulation of an Atomic Persistent Current, Physical Review Letters (2021). DOI: 10.1103/PhysRevLett.127.113601

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Rochester Institute of Technology

Researchers develop new method for detecting superfluid motion (2021, September 25)
obtained 26 September 2021

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