A direct approach to Gaussian measurement based quantum computation

TL;DR

This paper presents a new measurement-based quantum computation scheme for continuous variables that avoids the need for ancillary cluster states, using resource state detection and digital post-processing with optimized parameters.

Contribution

It introduces a novel approach to continuous-variable quantum computation that simplifies implementation by eliminating the reliance on cluster states.

Findings

Demonstrates the method with simple computational examples

Shows the potential for optimized experimental parameter settings

Provides a general framework applicable to various quantum computations

Abstract

In this work we introduce a general scheme for measurement based quantum computation in continuous variables. Our approach does not necessarily rely on the use of ancillary cluster states to achieve its aim, but rather on the detection of a resource state in a suitable mode basis followed by digital post-processing, and involves an optimization of the adjustable experimental parameters. After introducing the general method, we present some examples of application to simple specific computations.