Readout of Parafermionic States by Transport Measurements
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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Readout of Parafermionic States by Transport Measurements. / Nielsen, Ida E.; Flensberg, Karsten; Egger, Reinhold; Burrello, Michele.
I: Physical Review Letters, Bind 129, Nr. 3, 037703, 13.07.2022.Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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TY - JOUR
T1 - Readout of Parafermionic States by Transport Measurements
AU - Nielsen, Ida E.
AU - Flensberg, Karsten
AU - Egger, Reinhold
AU - Burrello, Michele
PY - 2022/7/13
Y1 - 2022/7/13
N2 - Recent experiments have demonstrated the possibility of inducing superconducting pairing into counterpropagating fractional quantum Hall edge modes. This paves the way for the realization of localized parafermionic modes, non-Abelian anyons that share fractional charges in a nonlocal way. We show that, for a pair of isolated parafermions, this joint degree of freedom can be read by conductance measurements across standard metallic electrodes. We propose two complementary setups. We investigate first the transport through a grounded superconductor hosting two interacting parafermions. In the low -energy limit, its conductance peaks reveal their shared fractional charge yielding a three-state telegraph noise for weak quasiparticle poisoning. We then examine the two-terminal electron conductance of a blockaded fractional topological superconductor, which displays a characteristic e/3 periodicity of its zero -bias peaks in the deep topological regime, thus signaling the presence of parafermionic modes.
AB - Recent experiments have demonstrated the possibility of inducing superconducting pairing into counterpropagating fractional quantum Hall edge modes. This paves the way for the realization of localized parafermionic modes, non-Abelian anyons that share fractional charges in a nonlocal way. We show that, for a pair of isolated parafermions, this joint degree of freedom can be read by conductance measurements across standard metallic electrodes. We propose two complementary setups. We investigate first the transport through a grounded superconductor hosting two interacting parafermions. In the low -energy limit, its conductance peaks reveal their shared fractional charge yielding a three-state telegraph noise for weak quasiparticle poisoning. We then examine the two-terminal electron conductance of a blockaded fractional topological superconductor, which displays a characteristic e/3 periodicity of its zero -bias peaks in the deep topological regime, thus signaling the presence of parafermionic modes.
KW - ZERO-MODES
KW - QUANTUM
U2 - 10.1103/PhysRevLett.129.037703
DO - 10.1103/PhysRevLett.129.037703
M3 - Letter
C2 - 35905364
VL - 129
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 3
M1 - 037703
ER -
ID: 317438442