Optimized multi-ion cavity coupling

Begley, Stephen, Vogt, Markus, Gulati, Gurpreet Kaur, Takahashi, Hiroki and Keller, Matthias (2016) Optimized multi-ion cavity coupling. Physical Review Letters, 116 (22). pp. 223001-1. ISSN 0031-9007

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Abstract

Recent technological advances in cavity quantum electrodynamics (CQED) are paving the way to utilize multiple quantum emitters confined in a single optical cavity. In such systems, it is crucially important to control the quantum mechanical coupling of individual emitters to the cavity mode. In this regard, combining ion trap technologies with CQED provides a particularly promising approach due to the well established motional control over trapped ions. Here, we experimentally demonstrate coupling of up to five trapped ions in a string to a high-finesse optical cavity. By changing the axial position and spacing of the ions in a fully deterministic manner, we systematically characterize their coupling to the cavity mode through visibility measurements of the cavity emission. In good agreement with the theoretical model, the results demonstrate that the geometrical configuration of multiple trapped ions can be manipulated to obtain optimal cavity coupling. Our system presents a new ground for exploring CQED with multiple quantum emitters, enabled by the highly controllable collective light-matter interaction.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Atomic, Molecular and Optical Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Richard Chambers
Date Deposited: 05 Aug 2016 08:11
Last Modified: 07 Mar 2017 04:54
URI: http://sro.sussex.ac.uk/id/eprint/62228

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Project NameSussex Project NumberFunderFunder Ref
UK Quantum Technology Hub: NQIT-Networked Quantum Information TechnologiesG1503EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCILEP/M013243/1
Quantum Networking with Fibre-Coupled IonsG0755EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCILEP/J003670/1