Re: [Qirg] I-D Action: draft-irtf-qirg-quantum-internet-use-cases-02.txt

[Wojciech Kozlowski <[e-mail]>]

Hi all,

I started going through the new draft and I have some questions that would help me before I progress further:
* I am struggling to understand the difference between Quantum Subnetwork and Quantum Internet. Is the difference the same as between a classical subnetwork and the classical Internet? The definitions in the text are too vague for me.
* Additionally, some further comments in-line below in response to Patrick's comments.

> -----Original Message-----
> From: Qirg <[e-mail]> On Behalf Of Gelard Patrick
> Sent: 07 October 2020 16:18
> To: Chonggang Wang <[e-mail]>om>; [e-mail]
> Subject: Re: [Qirg] I-D Action: draft-irtf-qirg-quantum-internet-use-cases-
> 02.txt
> 
> Dear Chonggang,
> 
> Somes feedback
> 
> 1/ 4.3.  Control vs Data Plane Classification  The internet draft "Principles for a
> Quantum Internet" doesn't seem to mention a native quantum control plan
> (i.e based on quantum communication, E.g quatum ping) :
> 
> Control plane protocols for quantum networks will have  responsibilities
> similar to their classical counterparts, namely   drawing the network topology,
> resource management, populating data   plane tables, etc.  They will not
> manipulate quantum data themselves   and they operate by exchanging
> classical messages only.  Therefore   there is no separate quantum and
> classical control plane.  There is   only one network control plane.
> 
> Should we not make these two documents consistent?
> 

[WK] Patrick is right. It would be beneficial to get these two documents consistent and he is also right that with the latest changes I made I seem to exclude a quantum ping from the control plane. This is worth picking up on. As a start, a question to everybody: is the definition in the principles draft too strict then?

> 2/ 6.2.  Requirements
> In coherence with "Quantum internet: A vision for the road ahead" and
> "Principles for a Quantum Internet" should it not be necessary to define
> system metrics making it possible to express the quality of service
> requirements expected by the quantum applications I.e expected
> entanglement fidelity,  loss tolerance, error tolerance, Bell pair rate, Bell pair
> traffic profil (i.e bursty profil. For example if we use satellite LEO to generate
> Bell pair we may be interested in wanting to know what would be the impact
> on applications of Bell pair transmission breaks during phases of non-visibility
> of the satellite by ground stations), latence, time synchronization of nodes,
> ...  ?
> 

[WK] I think these numbers would be great, but really hard to come up with without a more detailed analysis. However, identifying which stage an application requires is already quite informative in terms of requirements. For example, identifying whether we only need a "quantum memory" stage network vs "fault-tolerant" already tells us a lot.

> Best Regards
> Patrick
> 
> -----Message d'origine-----
> De : Qirg <[e-mail]> De la part de Chonggang Wang Envoyé :
> mercredi 30 septembre 2020 16:06 À : [e-mail] Objet : Re: [Qirg] I-D
> Action: draft-irtf-qirg-quantum-internet-use-cases-02.txt
> 
> Dear QIRG,
> 
> Quantum internet use cases have been updated to address the comments
> received during IETF July meeting. Please refer to
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__datatracker.ietf.org_doc_draft-2Dirtf-2Dqirg-2Dquantum-2Dinternet-
> 2Duse-2Dcases_&d=DwIFAw&c=XYzUhXBD2cD-CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=ScCiYNV0YHMuwv
> Q9EO9Pg2DpMUILknHf77NGTuuu24Q&e= .
> 
> We would like to get your feedback on this new version and if the use case
> draft can be considered for next steps.
> 
> Best regards,
> Chonggang
> 
> -----Original Message-----
> From: Qirg <[e-mail]> On Behalf Of [e-mail]
> Sent: Friday, September 18, 2020 7:46 AM
> To: [e-mail]
> Cc: [e-mail]
> Subject: [Qirg] I-D Action: draft-irtf-qirg-quantum-internet-use-cases-02.txt
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Quantum Internet Research Group RG of the
> IRTF.
> 
>         Title           : Applications and Use Cases for the Quantum Internet
>         Authors         : Chonggang Wang
>                           Akbar Rahman
>                           Ruidong Li
>                           Melchior Aelmans
> Filename        : draft-irtf-qirg-quantum-internet-use-cases-02.txt
> Pages           : 23
> Date            : 2020-09-18
> 
> Abstract:
>    The Quantum Internet has the potential to improve application
>    functionality by incorporating quantum information technology into
>    the infrastructure of the overall Internet.  In this document, we
>    provide an overview of some applications expected to be used on the
>    Quantum Internet, and then categorize them using various
>    classification schemes.  Some general requirements for the Quantum
>    Internet are also discussed.  The intent of this document is to
>    provide a common understanding and framework of applications and use
>    cases for the Quantum Internet.
> 
> 
> The IETF datatracker status page for this draft is:
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__datatracker.ietf.org_doc_draft-2Dirtf-2Dqirg-2Dquantum-2Dinternet-
> 2Duse-2Dcases_&d=DwIFAw&c=XYzUhXBD2cD-CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=ScCiYNV0YHMuwv
> Q9EO9Pg2DpMUILknHf77NGTuuu24Q&e=
> 
> There are also htmlized versions available at:
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__tools.ietf.org_html_draft-2Dirtf-2Dqirg-2Dquantum-2Dinternet-2Duse-
> 2Dcases-2D02&d=DwIFAw&c=XYzUhXBD2cD-CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=KSHcjW7jCfeh3ws
> S75EyRdWTPdm6wox1tKWCh0i_EoU&e=
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__datatracker.ietf.org_doc_html_draft-2Dirtf-2Dqirg-2Dquantum-
> 2Dinternet-2Duse-2Dcases-2D02&d=DwIFAw&c=XYzUhXBD2cD-
> CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=PqYaD-
> P1uYemX5KMDp67_mL8sz6KYBE_pwkE869Nhgs&e=
> 
> A diff from the previous version is available at:
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__www.ietf.org_rfcdiff-3Furl2-3Ddraft-2Dirtf-2Dqirg-2Dquantum-
> 2Dinternet-2Duse-2Dcases-2D02&d=DwIFAw&c=XYzUhXBD2cD-
> CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=V3FasdcOnxQiM6s
> yp-OClMyL9y9IsvAr0m4m2DTaY2g&e=
> 
> 
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
> 
> Internet-Drafts are also available by anonymous FTP at:
> https://urldefense.proofpoint.com/v2/url?u=ftp-3A__ftp.ietf.org_internet-
> 2Ddrafts_&d=DwIFAw&c=XYzUhXBD2cD-CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=Hwq4UCag4XW_1
> UFXZM-cw47xdeFD55h3U9TQqMHx4Yg&e=
> 
> 
> _______________________________________________
> Qirg mailing list
> [e-mail]
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__www.irtf.org_mailman_listinfo_qirg&d=DwIFAw&c=XYzUhXBD2cD-
> CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=4T2oNNxQRVdPId
> CTJVle2wo1tQ3JooBoUm9HX3Yl1nA&e=
> [Banner]
> 
> [Banner]<https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__www.6gsymposium.com_-3Futm-5Fsource-3Dinterdigital-26utm-
> 5Fmedium-3Dsignature-26utm-5Fcampaign-
> 3D6gsymposium2020&d=DwIFAw&c=XYzUhXBD2cD-CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=NxCbRqWTfZnM2
> MBvewu6-h-h_BGyflCmCjOze2xJrYs&e= >
> 
> Join us at the First Annual 6G Symposium Virtual
> Event<https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__www.6gsymposium.com_-3Futm-5Fsource-3Dinterdigital-26utm-
> 5Fmedium-3Dsignature-26utm-5Fcampaign-
> 3D6gsymposium2020&d=DwIFAw&c=XYzUhXBD2cD-CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=NxCbRqWTfZnM2
> MBvewu6-h-h_BGyflCmCjOze2xJrYs&e= > This e-mail is intended only for
> the use of the individual or entity to which it is addressed, and may contain
> information that is privileged, confidential and/or otherwise protected from
> disclosure to anyone other than its intended recipient. Unintended
> transmission shall not constitute waiver of any privilege or confidentiality
> obligation. If you received this communication in error, please do not review,
> copy or distribute it, notify me immediately by email, and delete the original
> message and any attachments. Unless expressly stated in this e-mail, nothing
> in this message or any attachment should be construed as a digital or
> electronic signature.
> 
> _______________________________________________
> Qirg mailing list
> [e-mail]
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__www.irtf.org_mailman_listinfo_qirg&d=DwIFAw&c=XYzUhXBD2cD-
> CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=4T2oNNxQRVdPId
> CTJVle2wo1tQ3JooBoUm9HX3Yl1nA&e=
> 
> _______________________________________________
> Qirg mailing list
> [e-mail]
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__www.irtf.org_mailman_listinfo_qirg&d=DwIFAw&c=XYzUhXBD2cD-
> CornpT4QE19xOJBbRy-
> TBPLK0X9U2o8&r=xRe3k8UnFVGCjuC7RWUARpslGfYlRaP7D3dVZXHUEVc&m
> =vRyl9_Ww9DdYXXeBUp6F4AhPhy7qC0fH2FLcbGIntTI&s=4T2oNNxQRVdPId
> CTJVle2wo1tQ3JooBoUm9HX3Yl1nA&e=