Ion shuttling method for long-range shuttling of trapped ions in MEMS-fabricated ion traps

Abstract

A large-scale ion trap array fabricated using the microelectromechanical systems (MEMS) technology is expected to be a promising device for building a practical quantum computer. Shuttling trapped ions is essential for operating scalable ion trap structures. This paper proposes an ion shuttling method for a MEMS-fabricated surface ion trap. Change of secular frequency of trapping potential can cause heating and subsequent loss of ions. Therefore, direct current voltage sets to form uniform ion trapping potentials around the ions while shuttling are calculated by simulations. A 32-channel digital-to-analog converter system is developed to apply the calculated voltage sets to the electrodes of the MEMS-fabricated surface ion trap. The shuttling process is experimented using trapped 174Yb+ ions. The successful round trip of the ion for 1920 μm is demonstrated using the developed approach.

Analysis of multipartite entanglement distribution using a central quantum-network node

“…We note that an additional challenge when using trapped ions to realize a factory node is that N different ionic qubits in the same device need to participate in simultaneous Bellstate distribution with end nodes. One potential method to allow for a good photonic interface with individual ions is to use shuttling techniques [98][99][100][101][102][103][104]. This way, ions could be physically moved to separate cavities, where they can be made to emit entangled photons suitable for Bell-state distribution.…”

Analysis of Multipartite Entanglement Distribution using a Central Quantum-Network Node

“…We note that an additional challenge when using trapped ions to realize a factory node is that N different ionic qubits in the same device need to participate in simultaneous Bell-state distribution with end nodes. One potential method to allow for a good photonic interface with individual ions is to use shuttling techniques [95][96][97][98][99][100][101]. This way, ions could be physically moved to separate cavities, where they can be made to emit entangled photons suitable for Bell-state distribution.…”

Fast and robust particle shuttling for quantum science and technology

“…More recent experiments are described in refs. [20,42,[69][70][71]. We comment here on works that have addressed robustness in specific experimental settings.…”