[Qirg] Suggestions for architecture-04

Joseph D Touch <joseph.d.touch@aero.org> Mon, 17 August 2020 21:55 UTC

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From: Joseph D Touch <joseph.d.touch@aero.org>
To: "qirg@irtf.org" <qirg@irtf.org>
Thread-Topic: Suggestions for architecture-04
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Date: Mon, 17 Aug 2020 21:55:42 +0000
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Subject: [Qirg] Suggestions for architecture-04
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Hi, all,

Jumping in on the discussion (let me know if these would be easier to separate out), some thoughts below:


  *   Sec 5.3.1 could omit the “automated quantum nodes”
     *   They’re just degenerate cases of quantum routers with two quantum channels.
  *   Sec 5.3.2 should distinguish between quantum channels and classical as follows
     *   The quantum channels, at least as described, are direct (though, see below)
     *   The classical channels can be multihop classical paths

Finally, in classical architecture, I like to find equivalences within the architecture (e.g., see https://www.strayalpha.com/pubs/isi-tr-711.pdf). Here, in particular:

  *   That a multiparty link and a router are equivalent
     *   Where a multiparty link uses a MAC to determine forwarding, but a router determines it in-band
  *   That a link and a tunnel are equivalent
     *   Where a tunnel is an encapsulation-based link that can be applied recursively, and a physical link is just the base case of that recursion

In quantum nets, I think the multiparty link and router equivalence holds, e.g., a single fiber could have multiple taps at different wavelengths or that are switched based on control info where frequency and timing can determine destination (same as FDMA and TDMA classical links). Granted that some other classical multiparty link and MAC examples may not have quantum corollaries.

I’m still thinking about the tunnel example; in some sense, it could be just what quantum teleportation achieves (I think this is likely, given previous work Rod and I did on QRNA). We’d need to make sure the control protocols were similarly recursive, though.

It might be useful to add a section discussing these issues.

Joe

--
Dr. Joseph Touch
Sr Distributed Systems Data Architect
Information Systems and Cyber Division
The Aerospace Corporation
424-254-4357 cell