Metrics on fields in physics with funding/activity?

[YellowBiro]

Are there any metrics that show which areas in physics have lots of funding and activity at this present moment? Of course it would vary by location as well. I'm mainly interested in Europe.

I am basically trying to figure out if Quantum Information/Quantum Computing is a good field to specialise in. Also want to see if there are other theoretical physics fields which are also "trending".

 

[mfb]

The absolute amount of money is not the right question. More total money in a field simply means more researchers but not better career chances.
Funding per researcher? Variations will mainly come from other costs (experiments, travel, ...) or the regional distribution: Incomes are higher in San Francisco than in the middle of nowhere, Montana - but living costs are higher as well.
Growth over time? This is getting more interesting, but also often hard to predict. You want future growth - but that means anticipating what will be interesting in the future before funding agencies do so. What is trending now doesn't have to be trending in a few years when it might be relevant for you. Do you expect to make better decisions than funding agencies?

I am basically trying to figure out if Quantum Information/Quantum Computing is a good field to specialise in.

If and only if you are interested in it.
The main thing you can influence is your performance in the field. The best career chances in a field are useless if you can't be bothered contributing a lot to it. Better become the leading expert in whatever you are interested in.