Parallel gate operations in 3D optical lattice arrays of Cs atoms
Abstract
We propose to create and study novel many-body quantum states using a 3D array of neutral atoms trapped by light. As a first step, we will entangle >50 atoms using parallel pairwise collisions, creating the first large scale cluster state and the first in three dimensions. Cluster states have been theoretically shown to be remarkably robust to decoherence and errors, and we will demonstrate this experimentally. They are uniquely suited to the study of large-scale entanglement and are a central element of proposed one-way quantum computing schemes. To allow for more reliable creation of these states we will develop an optical addressing technology that allows for parallel, patterned changes to the quantum states of atoms in the 3D array, even when the number of atoms is substantially increased. We will also develop a way to measure the states of selected atoms without affecting the surrounding quantum information. This advance will extend how cluster states can be studied and used. Site-specific measurements will allow us to transform sets of atoms in the cluster state into other kinds of entangled states. For instance, two distant atoms in an array that have never interacted with each other can be put into an entangled Bell state by measuring some of the atoms in between them. The three central elements of this proposal, creation of cluster states, parallel addressing, and measurement of a select fraction of the quantum information in an array, will all be brought to bear in demonstrating one-way quantum computing. They will each also be applicable to other neutral atom quantum simulation and quantum computing experiments, significantly expanding the experimental tool box that can be applied to the study of quantum information.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2021
- Source ID
- FA95502010110
Entities
People
- David Weiss
Organizations
- Air Force Office of Scientific Research
- Pennsylvania State University
- United States Air Force