Prototyping a Quantum Computer with Trapped Ions

Dr. Kristin Beck (host Murch), Joint Quantum Institute/University of Maryland
April 11, 2018 at 4:00 pm
204 Crow
Event Description 

Trapped ytterbium ions are an ideal system for quantum computation, with optically-accessible qubit states with long coherence times and fidelities exceeding 99% [1]. We realize one- and two- qubit gates on a chain of these ions using far-detuned optical pulses and motional coupling between the ions. This quantum computing template has already demonstrated several quantum algorithms on 5 qubits in another experiment at the University of Maryland [2]. The next generation of this apparatus is the EURIQA system, a new room-temperature universal quantum computing system that has been designed from the top down in a collaboration between academic and industrial partners. The system relies on micro-fabricated traps, parallel addressing of individual ions, and multispecies operation and to address the challenges of increasing the number of ions with the eventual goal of implementing a logical qubit.

In this talk, I will describe our trapped ion quantum computing architecture [3], share first signals from the EURIQA system, and present an outlook for the quantum computation and simulation experiments this new apparatus will enable.

This work is supported by the ARO with funding from the IARPA LogiQ program and the AFOSR MURI on Quantum Measurement and Verification, and the ARO MURI on Modular Quantum Circuits.

  1. R Noek et al. Optics Letters, 38 (22) 4735-4738 (2013)
  2. NM Linke et al. arXiv:1712.08581 (2017); C Figgatt et al. Nature Comm. 8, 1918 (2017); NM Linke et al. Proc. Natl. Acad. Sci. 114, 13 (2017)
  3. C Monroe and D Wineland, Scientific American 64-71 (Aug. 2008); S Debnath et al. Nature 536, 63 (2016).

Coffee: 3:30 pm, 245 Compton