2018/12/31 by Morten I. K. Munk, Reinhold Egger, Karsten Flensberg · 15 citations
Materials Science · Physics and Astronomy · #Computer science #Condensed matter physics #Gapless playback #Graphene research and applications #Image (mathematics) #MAJORANA #Noise (video) #Physics #Quantum #Quantum entanglement #Quantum information #Quantum many-body systems #Quantum mechanics #Qubit #Superconductivity #Theoretical physics #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.supr-con #quant-ph
paper · pdf · doi:10.1103/physrevb.99.155419
published in Physical review. B./Physical review. B 99(15) (American Physical Society) · 18 pages, 10 figures
openalex created_date 2019/01/25 · openalex publication_date 2019/04/23 · arxiv created 2019/05/02 · arxiv updated 2019/05/06 · openalex updated_date 2026/08/06
Majorana qubits based on Majorana bound states (MBSs) are believed to be topologically protected and therefore robust to noise. However, when the MBSs are coupled to gapless modes, such as phonons or electromagnetic modes, the quantum information is stored in entangled MBS-environment states. Moreover, the combined system becomes gapless and even though the quantum information is still topologically protected, it is challenging to read out the quantum information when the measurement device only couples to the MBS. The paper discusses the readout errors that occur when performing projective measurement on the MBSs in this situation.