If a PKI key exchange over classical layers is still required, this device is probably functions solely as a show piece. It's amazingly compact, so that is a go

If a PKI key exchange over classical layers is still required, this device is probably functions solely as a show piece. It's amazingly compact, so that is a good place to make a mark in the industry. A classical binary en/decryptor chip that destroys the private key on first failed use would do essentially the same thing at considerably less cost. Now that they've made this so small, does it mean current quantum chips are soon to be obsolete? What about the refrigeration?