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Quantum information sharing between topologically distinct platforms
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DOI：10.1103/PhysRevB.94.235113.png)
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摘要
En 中文
Can topological quantum entanglement between anyons in one topological medium stray into a different, topologically distinct medium? In other words, can quantum information encoded nonlocally in the combined state of non-Abelian anyons be shared between two distinct topological media? For one-dimensional topological superconductors with Majorana bound states at the end of system, the quantum information store in those Majorana bound states can be transfered by directly coupling nearby Majorana bound states. However, coupling of two one-dimensional Majorana states will produce a gap, indicating that distinct topological regions of one-dimensional wires unite into a single topological region through the information transfer process. In this paper, we consider a setup with two two-dimensional p-wave superconductors of opposite chirality adjacent to each other. Even two comoving chiral modes at the domain wall between them cannot be gapped through interactions; we demonstrate that information encoded in the fermionic parity of two Majorana zero modes, originally within the same superconducting domain, can be shared between the domains or moved entirely from one domain to another provided that vortices can tunnel between them in a controlled fashion.
Keyword:
MAJORANA FERMIONS
P-WAVE
NANOWIRE
STATES
SUPERCONDUCTOR
STATISTICS
VORTICES
SIGNATURE
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期刊
IF:
3.7
论文数:
15.4W
被引数:
41.0W
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