But as I got closer to the frontline, I found more frustrating facts. The qubits are fragile, hard to maintain even for a single day, and the number are limited by all kinds of factors. The cost is huge, the devices are sensitive enough to feel the draft of room temperature. Not to mention there are few useful applications discovered for quantum algorithms. The beautiful visions seem to become a bubble, and it could burst at any time.
That makes me feel lost about the future: whether I should stick on this field? If not, where can I go? The most familiar things to me is quantum mechanics, and it's useless for almost every other fields.
Desperate...
It's ground-level with lots of unknowns. There's not going to be a lot of answers. It's the frontier. There's not a single book or body of knowledge that promises expertise or certification in the applied sense.
Exotic materials, probabilistic effects, cutting-edge research. Isn't that exciting? You get to refine your weaknesses, accept published contributions, and make the same.
Wet warm room temperature quantum computing is believed possible and they are looking for evidence of it in photosynthesis. And, the AI says in summary, skyrmion memory in the quasiparticle space is a career in reach to wide spread application.
As for the sensitivity of qubits, they're much more sensitive than integrated circuits and it's far more expensive to keep a suitable environment for the former. And there are natural limits for decoherence.
Thank you for your insightful comment!