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10 September 2019 Integrating a fiber cavity into a wheel trap for strong ion-cavity coupling (Conference Presentation)
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Abstract
Trapped ions coupled to optical cavities can be used to build up quantum interfaces between stationary and flying qubits in a quantum network. Shared entangled states between different network nodes have proven to be an essential resource for various applications of a quantum network, such as distributed quantum computation. At a first quantum network node, we have trapped ions in a linear Paul trap and coupled them to an optical cavity two centimeter in length. We have demonstrated entanglement of a single ion with a single photon, and used this high-fidelity operation to entangle two ions in a heralded fashion [1,2]. However, the speed of these operations is intrinsically limited by the ion-cavity coupling strength, which is predetermined by the length of the optical cavity. Fiber-based optical cavities have been coupled to single ions and it has been shown that these microscopic cavities allow access to the strong coupling regime [3]. Operating in this regime would enable quantum communication protocols to be carried out over long distances with enhanced fidelity and efficiency. With this goal, we have designed and constructed a novel ion-cavity system which incorporates a fiber cavity. In my talk, I will introduce basic building blocks of quantum networks based on trapped ions coupled to optical cavities and will present recent results, including simulation and characterization of our fiber-based ion-cavity system. [1] A. Stute et al., Nature. 485, 482 (2012) [2] B. Casabone et al., Phys. Rev. Lett. 111, 100505 (2013) [4] H. Takahashi et al., arXiv:1808.04031 (2018)
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Markus Teller, Viktor Messerer, Klemens Schüppert, Yueyang Zou, Dario Fioretto, Konstantin Friebe, Maria Galli, Yunfei Pu, Rainer Blatt, and Tracy Northup "Integrating a fiber cavity into a wheel trap for strong ion-cavity coupling (Conference Presentation)", Proc. SPIE 11134, Quantum Communications and Quantum Imaging XVII, 111340R (10 September 2019); https://doi.org/10.1117/12.2529120
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