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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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Published on: August 2, 2019

Superfluid quantum interference in multiple-turn reciprocal geometry.

Supradeep Narayana¹, Yuki Sato

¹The Rowland Institute at Harvard, Harvard University, Cambridge, Massachusetts 02142, USA.

Physical Review Letters

|July 21, 2011

Summary

This summary is machine-generated.

Researchers observed superfluid quantum interference using a novel matter-wave interferometer. This compact device utilizes Earth

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Area of Science:

Quantum physics
Condensed matter physics
Interferometry

Background:

Superfluidity enables unique quantum phenomena.
Matter-wave interferometers are sensitive to fundamental forces.
Previous interferometers faced limitations in size and sensitivity.

Purpose of the Study:

To demonstrate superfluid quantum interference in a compact, large-area matter-wave interferometer.
To explore the use of superfluid heat current for phase shifting.
To investigate the potential for sensitive rotation sensing.

Main Methods:

Construction of a multiple-turn interfering path in reciprocal geometry.
Application of the Sagnac effect from Earth's rotation.
Integration of a superfluid heat current phase shifter.

Main Results:

Successful observation of superfluid quantum interference.
Demonstration of a compact, large-area interferometer.
Validation of the superfluid heat current as a phase shifter.

Conclusions:

The developed interferometer enables superfluid quantum interference.
The scheme shows promise for sensitive rotation sensing applications.
This work advances general interferometry techniques using superfluids.