Not good, way to specialised too early on. You're definitely not gonna get a quantum engineering job with a bachelors and you won't be able to get other engineering jobs as easily compared to if you did mech/elec/chem etc.
There's a reason why no theres no other universities that offer such specialised undergrad degrees such as this - it's simply too specialised. You don't have the prerequisite background knowledge to study the subject in any meaningful way, and is why people only begin studying these types of areas as PhD students. If you look at the syllabus, you don't even do any quantum subjects untli the end of 2nd year, and even then, it's likely that most of the quantum subjects you take are very introductory. Would not recommend going into such a specialist degree, since it'd be difficult to find jobs in other fields. A degree with the word "quantum" in it might sound cool, but choosing to enter such a degree without knowing anything about what quantum mechanics entails is extremely ill-advised.
UNSW have always tended to offer a very wide range of engineering majors that might be better described as a specialisation of another major, and I think this is an example of that. I assume it's probably an effective marketing strategy as students will see an interesting major in the UAC booklet and find that it's only offered in name by UNSW.
If you're really interested in this program, i'd also recommend you look into standard electrical/telecoms programs both at UNSW and elsewhere and what elective choice subjects you can pick.