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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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Published on: August 12, 2013

Pumped-Up SU(1,1) Interferometry.

Stuart S Szigeti^1,2, Robert J Lewis-Swan¹, Simon A Haine³

¹School of Mathematics and Physics, University of Queensland, Brisbane, Queensland 4072, Australia.

Physical Review Letters

|April 29, 2017

Summary

This summary is machine-generated.

We introduce a "pumped-up" SU(1,1) interferometry technique that enhances sensitivity by engaging all particles in phase measurements. This novel approach improves upon conventional methods, especially in challenging experimental conditions.

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Area of Science:

Quantum optics
Quantum metrology
Atomic physics

Background:

SU(1,1) interferometry offers Heisenberg-limited sensitivity.
A key limitation is that only a fraction of particles contribute to phase measurement, reducing absolute sensitivity.

Purpose of the Study:

To propose and analyze a "pumped-up" SU(1,1) interferometry scheme.
To enable all input particles to participate in phase measurements for enhanced sensitivity.
To demonstrate the scheme's applicability in spinor Bose-Einstein condensates and hybrid atom-light systems.

Main Methods:

Theoretical proposal of the "pumped-up" SU(1,1) interferometry.
Implementation analysis in spinor Bose-Einstein condensates and hybrid atom-light systems.
Performance evaluation under various noise and loss conditions.

Main Results:

Pumped-up schemes surpass the shot-noise limit concerning total input particles.
The proposed method consistently outperforms conventional SU(1,1) interferometry.
Enhanced performance is maintained despite particle losses, detection limitations, and phase noise.

Conclusions:

Pumped-up SU(1,1) interferometry significantly boosts absolute sensitivity.
This technique overcomes limitations of conventional SU(1,1) interferometry.
The approach is crucial for developing practical quantum-enhanced devices.