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PhysRevApplied.6.044008.pdf (2.87 MB)

Comparative numerical studies of ion traps with integrated optical cavities

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journal contribution
posted on 2023-06-12, 08:34 authored by Nina Podoliak, Hiroki TakahashiHiroki Takahashi, Matthias KellerMatthias Keller, Peter Horak
We study a range of radio-frequency ion trap geometries and investigate the effect of integrating dielectric cavity mirrors on their trapping potential using numerical modelling. We compare five different ion trap geometries with the aim to identify ion trap and cavity configurations that are best suited for achieving small cavity volumes and thus large ion-photon coupling as required for scalable quantum information networks. In particular, we investigate the trapping potential distortions caused by the dielectric material of the cavity mirrors in all 3 dimensions for different mirror orientations with respect to the trapping electrodes. We also analyze the effect of the mirror material properties such as dielectric constants and surface conductivity, and study the effect of surface charges on the mirrors. As well as perfectly symmetric systems, we also consider traps with optical cavities that are not centrally aligned where we find a spatial displacement of the trap centre and asymmetry of the resulting trap only at certain cavity orientations. The best trapcavity configurations with the smallest trapping potential distortions are those where the cavities are aligned along the major symmetry axis of the electrode geometries. These cavity configurations also appear to be the most stable with respect to any mirror misalignment. Although we consider particular trap sizes in our study, the presented results can be easily generalized and scaled to different trap dimensions.

Funding

Quantum Networking with Fibre-Coupled Ions; G0755; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/J003670/1

UK Quantum Technology Hub: NQIT-Networked Quantum Information Technologies; G1503; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/M013243/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review Applied

ISSN

2331-7019

Publisher

American Physical Society

Issue

4

Volume

6

Page range

044008

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Atomic, Molecular and Optical Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-11-24

First Open Access (FOA) Date

2016-11-24

First Compliant Deposit (FCD) Date

2016-11-24

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