Re: [Qirg] GitHub PR Patch 1

[Wojciech Kozlowski <[e-mail]>]

Re: https://github.com/Wojtek242/draft-irtf-qirg-principles/pull/1

Hi Patrick,

Thanks for the pull request!

I've finally had some time to look at it now that I'm back to working on the
draft and before I include your changes I have some questions:

> Bell's pair-generating sources are part of the link.

[WK] I'm not sure I'd say the that the sources are part of the link, but the
link is crucial part of the generation process. I think it's worth returning to
this point once I sort out Sara's contribution about elementary link
generation.

> Quantum internet must support the diversity of encoding schemes.

[WK] I'm not enough of an expert to make a judgement on whether this should or
should not be part of the draft. I've heard of other encoding schemes before,
but not in the context of networks before. Can you explain a bit more about
this and if this will be practical in a quantum network context?

> Need an interconnection protocol to distribute Bell peer between autonomous
systems

[WK] Agreed, a brief addition like yours is good. Will include it. Would it be
worth adding some mention of potential challenges? Such as one AS having one
qubit of the pair and the other AS the other? Without too much detail though.

> Do not prematurely close the door to super dense coding that can be used for
example to transport control plane of classical and quantum Network. In this
use case the control plane can be seen as a quantum application that consumes
quantum bits to realize its functions.

[WK] I'm not sure why you would ever send control information over a quantum
channel. In general classical channels will be cheaper and more practical and
it would be wasteful to use qubits to send control information (where you need
10s of bits for each qubit you transmit). Could you explain a bit more?

> Bell pairs are also the basic fundamental unit for building complex multi-
partite entanglement state shared among several nodes of the network.

[WK] Agreed, will be included.

Cheers,
Wojtek