Weak Measurement Protocols for Majorana Bound State Identification
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
Weak Measurement Protocols for Majorana Bound State Identification. / Manousakis, J.; Wille, C.; Altland, A.; Egger, R.; Flensberg, K.; Hassler, F.
I: Physical Review Letters, Bind 124, Nr. 9, 096801, 06.03.2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Weak Measurement Protocols for Majorana Bound State Identification
AU - Manousakis, J.
AU - Wille, C.
AU - Altland, A.
AU - Egger, R.
AU - Flensberg, K.
AU - Hassler, F.
PY - 2020/3/6
Y1 - 2020/3/6
N2 - We propose a continuous weak measurement protocol testing the nonlocality of Majorana bound states through current shot noise correlations. The experimental setup contains a topological superconductor island with three normal-conducting leads weakly coupled to different Majorana states. Putting one lead at finite voltage and measuring the shot noise correlations between the other two (grounded) leads, devices with true Majorana states are distinguished from those without by strong current correlations. The presence of true Majorana states manifests itself in unusually high noise levels or the near absence of noise, depending on the chosen device configuration. Monitoring the noise statistics amounts to a weak continuous measurement of the Majorana qubit and yields information similar to that of a full braiding protocol, but at much lower experimental effort. Our theory can be adapted to different platforms and should allow for the clear identification of Majorana states.
AB - We propose a continuous weak measurement protocol testing the nonlocality of Majorana bound states through current shot noise correlations. The experimental setup contains a topological superconductor island with three normal-conducting leads weakly coupled to different Majorana states. Putting one lead at finite voltage and measuring the shot noise correlations between the other two (grounded) leads, devices with true Majorana states are distinguished from those without by strong current correlations. The presence of true Majorana states manifests itself in unusually high noise levels or the near absence of noise, depending on the chosen device configuration. Monitoring the noise statistics amounts to a weak continuous measurement of the Majorana qubit and yields information similar to that of a full braiding protocol, but at much lower experimental effort. Our theory can be adapted to different platforms and should allow for the clear identification of Majorana states.
UR - http://www.scopus.com/inward/record.url?scp=85082287924&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.124.096801
DO - 10.1103/PhysRevLett.124.096801
M3 - Journal article
C2 - 32202888
AN - SCOPUS:85082287924
VL - 124
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 9
M1 - 096801
ER -
ID: 241832603