Grid states for encoding and stabilizing a logical qubit in superconducting circuits (Part 1)
ORAL
Abstract
Quantum computation requires that systems preserve quantum information in the presence of noise. The impact of this noise can be mitigated by redundantly encoding a quantum bit of information within a space with a large number of dimensions. Stabilization is done by detecting noise-induced transformations of the system state before the encoded information is lost. In 2001, Gottesman Kitaev and Preskill (GKP) proposed to encode a quantum bit in non-local grid states of a harmonic oscillator. Remarkably, GKP codes have the potential to protect quantum information against all known error channels. In this talk, I will review GKP code properties and present a protocol based on a tunable interaction with an ancillary two-level system to create and stabilize GKP grid states using phase-estimation of the harmonic oscillator field.
*Work supported by ARO, AFOSR and YINQE
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Presenters
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Alec Eickbusch
- Yale Univ