"QKD is already used by banks and governments to transmit keys over fibre optics. But these cables absorb photons, limiting the distance over which the signal can travel."
Does hollow-core fibre suffer the same limitation?
Does hollow-core fibre suffer the same limitation?
I wonder what specific uses they mean. It's kind of hard to believe those are "serious" use-cases, going beyond demonstrations done for marketing reasons... Then again, as soon as you have a serious use-case, you don't tell anyone about it, so it's really hard to evaluate how much (if at all) this stuff is really used in practice.
Do you know any instances of practical usage? People getting actual keys and using those to encrypt actual sensitive data?
> what is a dumb thing?
Emphasizing quantum key control. In the situations where it's really relevant you don't need buy-in from investors, the value is evident.
Sayonara!