Single-Light-Pulse Driven Compact Atom Interferometry with Measurement Induced Large Momentum Transfer

TL;DR

This paper introduces a novel, compact atom interferometry method driven by a single light pulse, utilizing measurement-induced large momentum transfer to enhance sensitivity and simplify setup for portable applications.

Contribution

It presents a new design for light-pulsed atom interferometry using measurement-induced momentum transfer, reducing complexity and increasing amplification.

Findings

Achieved a momentum offset amplification of about 10^3 in simulations.

Proposed a cost-effective, high-accuracy measurement strategy.

Simplified physical setup for portable atom interferometers.

Abstract

We propose a fundamentally new design strategy of light-pulsed atom interferometry (LPAI) with a single atomic beam splitter. A traditional $\pi/2$-pulse Raman beam is employed to render a small momentum transfer at the initial state. After a short period of evolution during which physical relevant information can be loaded, a quantum weak measurement is applied to the internal state of the atoms. The final information will be detected from the transmission spectrum of a probe light to obviate the measurement of florescence signal. An effective amplification of the order of $10^3$ about the momentum offset is achieved in our simulation employing $Cs$ atoms with current experimental condition. Our proposal offers a cost-effective, high-accuracy measurement and readout strategy for LPAI. Furthermore, the strategy makes the physical setup much simpler and more compact offering new direction towards portable sensitive LPAI.