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TZID:Europe/Vienna
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DTSTART:20260329T030000
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DTSTART:20261025T020000
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DTSTAMP:20260925T121527Z
UID:6aab9d24089c1483964014@ist.ac.at
DTSTART:20260930T160000
DTEND:20260930T170000
DESCRIPTION:Speaker: Wun Kwan Yam\nhosted by Johannes Fink\nAbstract: Quant
 um communication in the microwave frequency regime is set to play an impor
 tant role in distributed quantum computing and hybrid quantum networks. In
  a step towards practical quantum networks\, we demonstrate quantum telepo
 rtation of coherent states over a thermal quantum network composed of two 
 spatially-separated dilution refrigerators\, operating at channel temperat
 ures up to 4 K. Furthermore\, we investigate a quantum secret sharing prot
 ocol in a tripartite superconducting network\, reconstructing microwave co
 herent states with fidelities above the no-cloning threshold and realizing
  unconditionally secure communication. We explore inherent connections bet
 ween quantum secret sharing and other important quantum information proces
 sing tasks\, such as quantum dense coding and elementary quantum error cor
 rection of channel erasures. Our results show the experimental feasibility
  of distributed superconducting architectures and motivate further investi
 gations of practical quantum networks in various frequency regimes.
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:sandra.widdmann@ist.ac.at
SUMMARY:Wun Kwan Yam: Microwave quantum communication in superconducting ne
 tworks
URL:https://talks-calendar.ista.ac.at/events/6665
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