Revealing the nonlocal coherent nature of Majorana devices from dissipative teleportation

Article

关键词: TOPOLOGICAL SUPERCONDUCTIVITY;    COULOMB-BLOCKADE;    P-WAVE;    NANOWIRE;    CONDUCTANCE;    FERMIONS;    STATISTICS;    SIGNATURE;    GAP;   

DOI  :  10.1103/PhysRevB.101.081406

来源: SCIE

【 摘 要 】

The recent observations of Majorana resonance increase our confidence in the realization of the first topological qubit. The nonlocal coherent nature of Majorana devices is the key factor for the topological protection of these qubits from decoherence. Direct observation of this coherent nature could provide a first-step benchmarking scheme to validate Majorana qubit quality, which could be the next experimental milestone. We propose a simple transport scheme with a Majorana island device along with a dissipative environment in the electrodes. We find that the dissipative environment renormalizes the quantum transport in significantly different ways: As the temperature is reduced, while the conductance for Majorana coherent teleportation increases, all other incoherent signals are strongly suppressed due to dissipation. This unique conductance scaling behavior is a clear benchmark to reveal the nonlocal coherent nature of Majorana devices.

【 授权许可】

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