Proposal to measure the quasiparticle poisoning time of Majorana bound states
Name
Colbert-2014-Proposal to measure the quasiparticle.pdf
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Author(s)
Lee, Patrick A.
Colbert, Jacob Reid
Date Issued
April 2014
Journal
Physical Review B
Publisher
American Physical Society
Citation
Colbert, Jacob R., and Patrick A. Lee. "Proposal to measure the quasiparticle poisoning time of Majorana bound states." Phys. Rev. B 89, 140505(R) (April 2014). © 2014 American Physical Society
Version
Final published version
Abstract
We propose a method of measuring the fermion parity lifetime of Majorana fermion modes due to quasiparticle poisoning. We model quasiparticle poisoning by coupling the Majorana modes to electron reservoirs, explicitly breaking parity conservation in the system. This poisoning broadens and shortens the resonance peak associated with Majorana modes. In a two-lead geometry, the poisoning decreases the correlation in current noise between the two leads from the maximal value characteristic of crossed Andreev reflection. The latter measurement allows for calculation of the poisoning rate even if the temperature is much higher than the resonance width.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.89.140505
