Quantum group meeting: "Coherent control of Rydberg operations and nuclear spin qubits in Ytterbium optical tweezer arrays," Alex Burgers [Thompson group]

Date
Dec 16, 2021, 12:30 pm1:30 pm
Location
Equad J323

Details

Event Description

Abstract:
Neutral atom arrays are a rapidly developing platform for quantum science. An emerging frontier in neutral atom arrays is the use of alkaline earth atoms (AEA) such as Yb.  The rich internal structure of these atoms affords a number of unique capabilities and entangling operations between atoms can be realized using Rydberg exceptions.  In this talk, I will discuss our recent work utilizing the optically active ion core of Yb to induce light shifts on the Rydberg state. This technique can be extended to achieve local control of Rydberg mediated quantum gates in an array.  Additionally, I will describe our recent realization of universal gate operations on a nuclear spin qubit n 171Yb.  We show long coherence times for nuclear spin, T2*=1.24 s, as well as high fidelity single qubit operations with randomized benchmarking, F=0.99959. Finally we demonstrate two-qubit gate operations and show coherent control of these operations using light shifts induced by driving the Yb+ ion core. These results are an important milestone for quantum computing applications using AEA tweezer arrays.
 
 
Zoom link: for those of you wishing to attend via zoom, the talk will be broadcast at
https://princeton.zoom.us/j/98098084539