Inducing Time-Reversal-Invariant Topological Superconductivity and Fermion Parity Pumping in Quantum Wires
We propose a setup to realize time-reversal-invariant topological superconductors in quantum wires, proximity coupled to conventional superconductors. We consider a model of quantum wire with strong spin-orbit coupling and proximity coupling to two s-wave superconductors. When the relative phase bet...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/81385 https://orcid.org/0000-0002-8803-1017 |
| _version_ | 1811081871848636416 |
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| author | Keselman, Anna Fu, Liang Stern, Ady Berg, Erez |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Keselman, Anna Fu, Liang Stern, Ady Berg, Erez |
| author_sort | Keselman, Anna |
| collection | MIT |
| description | We propose a setup to realize time-reversal-invariant topological superconductors in quantum wires, proximity coupled to conventional superconductors. We consider a model of quantum wire with strong spin-orbit coupling and proximity coupling to two s-wave superconductors. When the relative phase between the two superconductors is ϕ=π a Kramers pair of Majorana zero modes appears at each edge of the wire. We study the robustness of the phase in the presence of both time-reversal-invariant and time-reversal-breaking perturbations. In addition, we show that the system forms a natural realization of a fermion parity pump, switching the local fermion parity of both edges when the relative phase between the superconductors is changed adiabatically by 2π. |
| first_indexed | 2024-09-23T11:53:44Z |
| format | Article |
| id | mit-1721.1/81385 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:53:44Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/813852022-10-01T06:46:33Z Inducing Time-Reversal-Invariant Topological Superconductivity and Fermion Parity Pumping in Quantum Wires Keselman, Anna Fu, Liang Stern, Ady Berg, Erez Massachusetts Institute of Technology. Department of Physics Fu, Liang We propose a setup to realize time-reversal-invariant topological superconductors in quantum wires, proximity coupled to conventional superconductors. We consider a model of quantum wire with strong spin-orbit coupling and proximity coupling to two s-wave superconductors. When the relative phase between the two superconductors is ϕ=π a Kramers pair of Majorana zero modes appears at each edge of the wire. We study the robustness of the phase in the presence of both time-reversal-invariant and time-reversal-breaking perturbations. In addition, we show that the system forms a natural realization of a fermion parity pump, switching the local fermion parity of both edges when the relative phase between the superconductors is changed adiabatically by 2π. 2013-10-15T15:58:52Z 2013-10-15T15:58:52Z 2013-09 2013-05 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/81385 Keselman, Anna, Liang Fu, Ady Stern, and Erez Berg. “Inducing Time-Reversal-Invariant Topological Superconductivity and Fermion Parity Pumping in Quantum Wires.” Physical Review Letters 111, no. 11 (September 2013). © 2013 American Physical Society https://orcid.org/0000-0002-8803-1017 en_US http://dx.doi.org/10.1103/PhysRevLett.111.116402 Physical Review Letters 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. application/pdf American Physical Society American Physical Society |
| spellingShingle | Keselman, Anna Fu, Liang Stern, Ady Berg, Erez Inducing Time-Reversal-Invariant Topological Superconductivity and Fermion Parity Pumping in Quantum Wires |
| title | Inducing Time-Reversal-Invariant Topological Superconductivity and Fermion Parity Pumping in Quantum Wires |
| title_full | Inducing Time-Reversal-Invariant Topological Superconductivity and Fermion Parity Pumping in Quantum Wires |
| title_fullStr | Inducing Time-Reversal-Invariant Topological Superconductivity and Fermion Parity Pumping in Quantum Wires |
| title_full_unstemmed | Inducing Time-Reversal-Invariant Topological Superconductivity and Fermion Parity Pumping in Quantum Wires |
| title_short | Inducing Time-Reversal-Invariant Topological Superconductivity and Fermion Parity Pumping in Quantum Wires |
| title_sort | inducing time reversal invariant topological superconductivity and fermion parity pumping in quantum wires |
| url | http://hdl.handle.net/1721.1/81385 https://orcid.org/0000-0002-8803-1017 |
| work_keys_str_mv | AT keselmananna inducingtimereversalinvarianttopologicalsuperconductivityandfermionparitypumpinginquantumwires AT fuliang inducingtimereversalinvarianttopologicalsuperconductivityandfermionparitypumpinginquantumwires AT sternady inducingtimereversalinvarianttopologicalsuperconductivityandfermionparitypumpinginquantumwires AT bergerez inducingtimereversalinvarianttopologicalsuperconductivityandfermionparitypumpinginquantumwires |