Encrypting Majorana fermion qubits as bound states in the continuum

L. H. Guessi*, F. A. Dessotti, Y. Marques, L. S. Ricco, G. M. Pereira, P. Menegasso, M. De Souza, A. C. Seridonio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


We theoretically investigate a topological Kitaev chain connected to a double quantum-dot (QD) setup hybridized with metallic leads. In this system we observe the emergence of two striking phenomena: (i) a decrypted Majorana fermion (MF) qubit recorded over a single QD, which is detectable by means of conductance measurements due to the asymmetrical MF-qubit leaked state into the QDs; (ii) an encrypted qubit recorded in both QDs when the leakage is symmetrical. In such a regime, we have a cryptographylike manifestation, since the MF qubit becomes bound states in the continuum, which is not detectable in conductance experiments.

Original languageEnglish
Article number041114
JournalPhysical Review B
Issue number4
Publication statusPublished - 13 Jul 2017

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© 2017 American Physical Society.


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