Probing spin entanglement by gate-voltage-controlled interference of current correlation in quantum spin Hall insulators
Mesoscale and Nanoscale Physics
2015-06-15 v2 Quantum Physics
Abstract
We propose an entanglement detector composed of two quantum spin Hall insulators and a side gate deposited on one of the edge channels. For an ac gate voltage, the differential noise contributed from the entangled electron pairs exhibits the nontrivial step structures, from which the spin entanglement concurrence can be easily obtained. The possible spin dephasing effects in the quantum spin Hall insulators are also included.
Cite
@article{arxiv.1304.5933,
title = {Probing spin entanglement by gate-voltage-controlled interference of current correlation in quantum spin Hall insulators},
author = {Wei Chen and Z. D. Wang and R. Shen and D. Y. Xing},
journal= {arXiv preprint arXiv:1304.5933},
year = {2015}
}
Comments
Physics Letters A in press