I appreciate you making me aware of the fact that there have been some working quantum computers now. They may be small, but even the first one was a huge step. I'm somewhat surprised to learn that the first real steps were quite a long time ago.
I wonder if I'll live long enough to see a quantum computer on the home desktop. It would probably run The Elder Scrolls 37 really well.
For me if I have to use cash I'm already against the purchase. It's horribly inconvenient for me, and isn't accepted for online purchases which is where I do all my important shopping other than clothes and groceries. Since I can pay for both of those things on my card as well as at pretty much any restaurant, I've got no need for cash that I can see.
Even convenience stores are happy to accept a card (with no surcharge) for very small purchases. I admit that has changed in recent years, and until that change I did grudgingly have to withdraw cash to shop for those items.
I don't really care to carry currency which can be lost or stolen, and then never recovered. If I lose my card, all I have to do is contact the bank and let them know. They will cancel it for me and I can soon get a new one. Under those specific circumstances I would use cash, of course. Since I am deprived of all the better options.
I see things are different for you, but I prefer to handle as little cash as humanly possible.
Has anything practical actually been demonstrated in the field of quantum computing yet? I understand that a lot of exciting and complex (if you're into that) math has gone into describing a model for how quantum computing should function, but as far as I'm aware nobody has actually managed to build any prototype devices yet.
When I first heard the term "quantum computing", I believed it to be a meaningless buzzword. I think at that time it may have been so. Now it is obviously a real concept, but unless I may be better informed, I think it is still a very long way off.
I wonder if programming for a quantum computer will be anything like programming for the digital (is that the proper term to use in contrast?) computers we have now. I can't help but feel that it would be both very different and rather more difficult.