dorsal/arxiv
View SchemaUniversal quantum computation with electron spins in quantum dots based on superpositions of spacetime paths and Coulomb blockade
| Authors | Cyrus C. Y. Lin, Chopin Soo, Yin-Zhong Wu, Wei-Min Zhang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0410150 |
| URL | https://arxiv.org/abs/quant-ph/0410150 |
Abstract
Using electrostatic gates to control the electron positions, we present a new controlled-NOT gate based on quantum dots. The qubit states are chosen to be the spin states of an excess conductor electron in the quantum dot; and the main ingredients of our scheme are the superpositions of space-time paths of electrons and the effect of Coulomb blockade. All operations are performed only on individual quantum dots and are based on fundamental interactions. Without resorting to spin-spin terms or other assumed interactions, the scheme can be realized with a dedicated circuit and a necessary number of quantum dots. Gate fidelity of the quantum computation is also presented.
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"abstract": "Using electrostatic gates to control the electron positions, we present a new\ncontrolled-NOT gate based on quantum dots. The qubit states are chosen to be\nthe spin states of an excess conductor electron in the quantum dot; and the\nmain ingredients of our scheme are the superpositions of space-time paths of\nelectrons and the effect of Coulomb blockade. All operations are performed only\non individual quantum dots and are based on fundamental interactions. Without\nresorting to spin-spin terms or other assumed interactions, the scheme can be\nrealized with a dedicated circuit and a necessary number of quantum dots. Gate\nfidelity of the quantum computation is also presented.",
"arxiv_id": "quant-ph/0410150",
"authors": [
"Cyrus C. Y. Lin",
"Chopin Soo",
"Yin-Zhong Wu",
"Wei-Min Zhang"
],
"categories": [
"quant-ph"
],
"title": "Universal quantum computation with electron spins in quantum dots based on superpositions of spacetime paths and Coulomb blockade",
"url": "https://arxiv.org/abs/quant-ph/0410150"
},
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