Australia has a wonderful set of universities researching in photonics and optics. This makes them pioneers in Quantum sensing. You can see this article about the Super conducting gravimeter based on Quantum technology ( An equipment which can detect changes in gravitational field) 

https://earthsciences.anu.edu.au/research/facilities/gravity-monitoring-equipment

With this strong background they are venturing into Quantum computing by forming university clusters. Here we are giving the pointers about the Quantum computing landscape of Australian defense by analyzing the publicly available information

The Australian Strategic Policy Institute(ASPI)  has provided a long article about their strategy in to

quantum computing.This is a very comprehensive coverage mentioning how Australia started with Quantum computing and now where it is heading to etc. It mentions 17 times about China in this article. 

They are mainy concerned about the strategic imbalance which China's perceived dominance in Quantum computing can bring to the region. 

https://www.aspi.org.au/report/australian-strategy-quantum-revolution

But when we see the Australian Defense web page we don’t actually get lot of Quantum computing resources

https://www.dst.defence.gov.au/search/node/quantum

So we looked around and checked which is the right place to understand about Australian Quantum computing research.

Then we got this page of Centre of Excellence for Quantum Computation and Communication Technology (CQC²T)which is funded by Australian Research Council (ARC).

https://www.cqc2t.org/about-us/

This provides interesting insights into the cutting-edge work on Quantum Technologies at Australia. Which we can rightly assume that is under the aegis of Australian Defense Research policies.