[CS] Andrew Litteken MS Presentation/May 14, 2021

[pbaclawski at uchicago.edu]

This is an announcement of Andrew Litteken's MS Presentation.
===============================================
Date: Friday, May 14, 2021

Time: 1:30PM CST

Location: Via Zoom
Link: https://uchicago.zoom.us/j/94246028106?pwd=c2tDQ1EraVp2bnVGbzd5WmRSUHdkQT09 Password: 518129

M.S. Candidate: Andrew Litteken

M.S. Paper Title: Exploiting Long-Distance Interactions and Tolerating Atom Loss in Neutral Atom Quantum Architectures

Abstract: While many quantum technologies are currently in development, all are prone to high levels of noise and none have found  a  true  path  to  scalability.  As  a  result,  many  software optimizations  for  quantum  program  are  employed  to  decrease error  and  increase  the  possibility  of  success.  At  times,  these software approaches can be used to mitigate major disadvantages on  quantum  hardware.

Neutral   Atom   (NA)   architectures   are   among   the   possible candidates  for  developing  scalable  quantum  technology.  Neutral atom  systems   offers   several   benefits   such   as   long   distance interactions,  and  native  multiqubit  gates,  such  as  the  3  qubit Toffoli gate, to reduce communication overhead, gate count, and depth of quantum programs. All of these are important metrics to  running  quantum  programs  with  noisy  operations.

However, atoms in an Neutral Atom array can randomly be lost over the course of a program's execution, during measurement, a combined 2% chance per run, or due to atom collisions, a 0.0068% chance.  The loss of an atom used in computation has a destructive outcome on a result, requiring a full reloading of the array, which is a slow process to perform after a loss.  This works explores, in depth, several different coping mechanisms to increase the resilience of a neutral atom system to atom loss.  These mechanisms are much faster than the time necessary to reload an array of atoms or a full recompilation of the program, dramatically reducing overall computation time, allowing neutral atoms to be a viable candidate for scalable quantum computing.

Advisor: Fred Chong

Committee Members: Fred Chong, Hank Hoffman, Robert Rand