Work

Phase-stable traveling waves stroboscopically matched for superresolved observation of trapped-ion dynamics

Year: 2024

Type: article

Abstract: In quantum technologies, it is essential to understand and exploit the interplay of light and matter. We introduce an approach creating and maintaining the coherence of four oscillators: a global microwave reference field, a polarization-gradient traveling-wave pattern of light, and the spin and motional states of a single trapped ion. Our method employs a UV light pattern capable of achieving a gigahertz-modulation bandwidth, here demonstrated in the megahertz regime, allowing for stroboscopic tracking of dynamic changes in phase space. We achieve noise floors of $1.8(2)\phantom{\rule{0.16em}{0ex}}\text{nm}$ for position and $8(2)\phantom{\rule{4.pt}{0ex}}\text{zN}\phantom{\rule{0.16em}{0ex}}\phantom{\rule{0.16em}{0ex}}\textmu{}\mathrm{s}$ for momentum observables, superresolving variations on timescales $\ensuremath{\lesssim}100$ ns. The implications of our findings contribute to enhancing quantum control and metrological applications.

Source: Physical Review A

DOI: 10.1103/physreva.109.053105

Authors: Florian Hasse, Deviprasath Palani, Robin Thomm, Ulrich Warring, Tobias Schaetz

Institution: University of Freiburg

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funder: Deutsche Forschungsgemeinschaft

Awards: G8549798711, G8921241793