SQuaD and QR.X hos­ted a Joint Work­shop in Bad Hon­nef

SQuaD and QR.X hos­ted a Joint Work­shop in Bad Hon­nef –

From 22 to 24 Febru­ary 2023, a lar­ge sec­tion of Germany’s Quan­tum Com­mu­ni­ca­ti­on com­mu­ni­ty came tog­e­ther for a con­fe­rence held at the Phy­sik­zen­trum Bad Hon­nef (PBH) near Bonn. The sta­te­ly atmo­sphe­re of the PBH’s 19th cen­tu­ry monas­tery buil­ding com­bi­ned with the modern set­ting of the adjoi­ning con­fe­rence cen­ter pro­vi­ded a uni­que frame­work for this event. To sti­mu­la­te the dis­cour­se, the QR.X rese­arch pro­ject joi­n­ed forces with the umbrel­la pro­ject known as SQuaD of the Ger­man Inno­va­ti­on Hub for Quan­tum Com­mu­ni­ca­ti­on to orga­ni­ze a joint con­fe­rence. Around 80 atten­de­es took part on site, while at peak times the live stream audi­ence top­ped the 30 mark. Fol­lo­wing a brief gree­ting, Prof. Dr. Chris­toph Becher repor­ted first on the Quantenrepeater.Link (QR.X) joint rese­arch pro­ject. Its work is aimed at demons­t­ra­ting the fun­da­men­tal ele­ments and func­tions of Quan­tum Repea­ters and how they can be deploy­ed under real-world con­di­ti­ons. QR.X rese­ar­chers are explo­ring new and inno­va­ti­ve approa­ches along three tech­no­lo­gy pathways: (1) trap­ped atoms and ions; (2) Quan­tum Sys­tems in dia­monds; and (3) semi­con­duc­tor nanos­truc­tures. Tog­e­ther, the­se tech­no­lo­gies will lead to the deve­lo­p­ment of com­pon­ents for Quan­tum Repea­ters. The rese­arch teams were able to show that an asyn­chro­no­us ent­an­gle­ment dis­tri­bu­ti­on sche­me veri­fies the slight los­ses pre­dic­ted in asso­cia­ti­on with Quan­tum Key Dis­tri­bu­ti­on (QKD), and that incre­asing the cohe­rence time will, in prin­ci­ple, enable Quan­tum Com­mu­ni­ca­ti­on over grea­ter distances. “The next step: We have to get out of the lab. We need to actively test the appli­ca­ti­on in fiber test­ing links and demons­tra­te the advan­ta­ges of the Quan­tum Repea­ter in prac­ti­ce. We will use mul­ti­plex­ing to try and rai­se the data rate even fur­ther,” says Prof. Becher in sum­ming up whe­re the QR.X pro­ject curr­ent­ly stands.

Next up was Dr. Thors­ten Goe­bel, who pre­sen­ted the four fields of appli­ca­ti­on being inves­ti­ga­ted by the QuN­ET rese­arch initia­ti­ve. With fun­ding from the Fede­ral Minis­try of Edu­ca­ti­on and Rese­arch (BMBF), the QuN­ET initia­ti­ve is lay­ing the foun­da­ti­on for secu­re and robust IT net­works based on Quan­tum Com­mu­ni­ca­ti­on. Bet­ween now and 2026, the share of rese­ar­chers is to be gra­du­al­ly redu­ced in favor of the par­ti­ci­pa­ting indus­try part­ners, the aim being to ensu­re that the trans­fer of know­ledge to indus­try goes as smooth­ly and as quick­ly as pos­si­ble. One key expe­ri­ment of par­ti­cu­lar importance is sche­du­led for June of 2023. Its objec­ti­ve is to demons­tra­te an exch­an­ge of Quan­tum Keys on a point-to-point link in Jena via both free-space and opti­cal fiber con­nec­tions.

Sin­ce late 2022 Ger­ma­ny has been working to pool its exper­ti­se in this area within the Inno­va­ti­on Hub for Quan­tum Com­mu­ni­ca­ti­on, which is being coor­di­na­ted by SQuaD, the Umbrel­la Pro­ject for Quan­tum Com­mu­ni­ca­ti­on in Ger­ma­ny. “The aim of this umbrel­la pro­ject is to estab­lish a cen­tral point of cont­act for the exper­ti­se and infra­struc­tu­re of Quan­tum Com­mu­ni­ca­ti­on in Ger­ma­ny.” says Dr. Nico­las Speth­mann in describ­ing the SQuaD mis­si­on. To achie­ve this, rese­arch and indus­try actors and pro­jects like QuN­ET, QR.X and DivQ­Sec are being brought tog­e­ther as part­ners and their exis­ting rese­arch faci­li­ties expan­ded to crea­te publicly available test­ing links for Quan­tum Com­mu­ni­ca­ti­on tech­no­lo­gy. The Phy­si­ka­lisch-Tech­ni­sche Bun­des­an­stalt (PTB) and the Bun­des­in­sti­tut für Sicher­heit in der Infor­ma­ti­ons­tech­nik (BSI) con­tri­bu­te to the Hub by adding key exper­ti­se in the are­as of metro­lo­gy and cyber­se­cu­ri­ty.

With its broad ran­ge of acti­vi­ties that includes Ger­ma­ny-wide coor­di­na­ti­on, ensu­ring tech­no­lo­gy and know­ledge trans­fer, harnes­sing rese­arch infra­struc­tures, and per­forming moni­to­ring, road map­ping, and long-term plan­ning, SQuaD is working to bring Quan­tum Com­mu­ni­ca­ti­on actors tog­e­ther both within the Inno­va­ti­on Hub and bey­ond.

This talk was fol­lo­wed by pre­sen­ta­ti­ons by the six indus­try-led pro­jects in the Inno­va­ti­on Hub to address the topics of Quan­tum Key Dis­tri­bu­ti­on, stan­dar­diza­ti­on, cer­ti­fi­ca­ti­on, and user plat­forms. The third day of the con­fe­rence focu­sed on 6G rese­arch and gave atten­de­es a broa­der over­view of what is hap­pe­ning in this field.

Pho­to: Prof. Becher and Dr. Speth­mann wel­co­me the par­ti­ci­pan­ts.

Pho­to and source refe­rence: https://www.forschung-it-sicherheit-kommunikationssysteme.de/service/aktuelles/fachcommunity-quantenkommunikation-bad-honnef