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Abstract: NPL’s ion microtrap is a linear segmented ion trap with 3D electrode geometry. NPL has developed a monolithic MEMS-style fabrication process carried out successfully at the wafer-level for its 3rd generation design. Electronically and vacuum packaged traps with atom source shielding prepared by NPL are in use in experiments at the NPL (88Sr+ optical qubit), the University of Oxford (Ba+ and 43Ca+) and lately at the NQCC (88Sr+). I will give an overview of the trap fabrication and packaging approach and shortly summarize the use outside NPL. At NPL the platform serves for the development of scalable entanglement procedures for metrological applications in precision spectroscopy used in optical clocks and sensors. I will summarize some early results from NPL with 88Sr+ on few-ion entanglement, and on motional heating in single ion and entangled ion-pair shuttling trials.

Over the next 5 years NPL will establish a testbed for Quantum Networking and Secure Communications with dedicated fibre networks also beyond the NPL site. The aim is to provide a test and characterization facility for components. We are exploring the feasibility to implement the NPL ion traps as a quantum network node in the testbed. I will give a short introduction to the present testbed project plans and our fledgling plans to include the ion trap platform.

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