Abstract: Various embodiments of the present invention are directed to self-authenticating, quantum random bit generators that can be integrated into an optoelectronic circuit. In one embodiment, a quantum random bit generator comprises a transmission layer that includes an electromagnetic radiation source coupled to a waveguide branching into a first, second, and third waveguides. The radiation source generates pulses of electromagnetic radiation in a first polarization state. Polarization rotators are operably coupled to the second and third waveguides and rotate pulses transmitted in the second waveguide into a second polarization state and rotate pulses transmitted in the third waveguide into a third polarization state. The system control generates a sequence of bits based on polarization basis states of the pulses transmitted in the first waveguide, and tomographically authenticates randomness of the sequence based on polarization basis states of the second and third pulses.

Abstract: A laptop computer is coupled to a first port of a network hub for the purpose of assigning a logical address to it. The network manager depresses a front panel button on the hub to activate a logical address learn mode. The network manager types a “ping” command into the laptop, specifying as the logical destination address the address to be adopted by the hub. The laptop, unable to find a matching physical address for the logical address, issues an address-resolution packet (ARP). The hub responds by adopting the destination address as its logical address and exiting learn mode; the hub replies with its physical address. The laptop, now informed of the hub's physical address, issues the ping request. The hub responds normally to this request, providing confirmation at the laptop that the logical address has been properly assigned.