کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1533437 | 1512557 | 2016 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Generation of hybrid four-qubit entangled decoherence-free states assisted by the cavity-QED system Generation of hybrid four-qubit entangled decoherence-free states assisted by the cavity-QED system](/preview/png/1533437.png)
• Four-qubit decoherence-free entanglements are generated assisted by quantum dot.
• This deterministic scheme uses single-photon resources.
• The hybrid states may be applied up to different requirements of photons and spins.
We propose three effective protocols to generate four-qubit entangled decoherence-free states assisted by the cavity-QED system. These schemes are based on optical selection rules realized with a single electron charged self-assembled GaAs/InAs quantum dot in a micropillar resonator. Compared with previous photonic protocols, the first scheme is to replace the entangled-state resources with much simpler single-photon resources and has a deterministic success probability. Moreover, the cavity-QED system may be used to generate four-spin entangled decoherence-free states and hybrid four-qubit of spin-photon entangled decoherence-free states. These states may be applied up to different requirements because of different superiorities of photons and spins. All schemes may be implemented with current physical technologies.
Journal: Optics Communications - Volume 366, 1 May 2016, Pages 397–403