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SUMMARY:Majorana Parity Qubits in Kitaev Chains
DTSTART:20261021T023000Z
DTEND:20261021T033000Z
DTSTAMP:20261106T111500Z
UID:indico-event-5380@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Leo Kouwenhoven (QuTech\, Delft University of Techno
 logy\, The Netherlands)\n\nHost: Prof. Chun-Xiao Liu  \nVenue: TDLI Mee
 ting Room N400\n \nAbstract:\nA Kitaev chain consists of semiconducting q
 uantum dots coupled by nanoscale superconductors. Under appropriate condit
 ions\, the system realizes an effective p-wave topological superconductor\
 , characterized by a bulk excitation gap and zero-energy states localized 
 at its two ends. These end states—Majorana bound states (MBSs)—togethe
 r form a single fermionic state whose occupation can be either even or odd
 . This fermion parity provides a basis for encoding a qubit in a pair of M
 BSs. Such a Majorana parity qubit is expected to be resilient to several s
 ources of noise that typically cause decoherence and loss of quantum infor
 mation.\nWe have realized Kitaev chains containing up to six quantum dots 
 and operated a Majorana parity qubit in shorter chains. Although the chain
 s used in these initial demonstrations are too short to provide full topol
 ogical protection\, the qubit encoding is the same as that envisioned for 
 topological quantum computation. Ongoing work focuses on increasing the ch
 ain length\, which is expected to enhance the qubit coherence time exponen
 tially. \n \nBiography:\nDr. Leo P. Kouwenhoven\, Distinguished Universi
 ty Professor at Delft University of Technology\, former Partner Manager an
 d Principal Researcher at Microsoft\, former founding-director at QuTech a
 nd member of the Kavli Institute for NanoScience in Delft. PhD from Delft 
 University of Technology (1992)\, postdoc research at UC-Berkeley\, visiti
 ng professor at Harvard\, member of both the Dutch Academy of Science and 
 Arts and the US National Academy of Science.\n\nhttps://indico-tdli.sjtu.e
 du.cn/event/5380/
LOCATION:Tsung-Dao Lee Institute/N4F-N400 - meeting room (Tsung-Dao Lee In
 stitute)
URL:https://indico-tdli.sjtu.edu.cn/event/5380/
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