dorsal/arxiv
View SchemaScalable Quantum Computing with "Enhancement" Quantum Dots
| Authors | Y. B. Lyanda-Geller, M. J. Yang, C. H. Yang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0508126 |
| URL | https://arxiv.org/abs/quant-ph/0508126 |
Abstract
We propose a novel scheme of solid state realization of a quantum computer based on single spin "enhancement mode" quantum dots as building blocks. In the enhancement quantum dots, just one electron can be brought into initially empty dot, in contrast to depletion mode dots based on expelling of electrons from multi-electron dots by gates. The quantum computer architectures based on depletion dots are confronted by several challenges making scalability difficult. These challenges can be successfully met by the approach based on ehnancement mode, capable of producing square array of dots with versatile functionalities. These functionalities allow transportation of qubits, including teleportation, and error correction based on straightforward one- and two-qubit operations. We describe physical properties and demonstrate experimental characteristics of enhancement quantum dots and single-electron transistors based on InAs/GaSb composite quantum wells. We discuss the materials aspects of quantum dot quantum computing, including the materials with large spin splitting such as InAs, as well as perspectives of enhancement mode approach in materials such as Si.
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"abstract": "We propose a novel scheme of solid state realization of a quantum computer\nbased on single spin \"enhancement mode\" quantum dots as building blocks. In the\nenhancement quantum dots, just one electron can be brought into initially empty\ndot, in contrast to depletion mode dots based on expelling of electrons from\nmulti-electron dots by gates. The quantum computer architectures based on\ndepletion dots are confronted by several challenges making scalability\ndifficult. These challenges can be successfully met by the approach based on\nehnancement mode, capable of producing square array of dots with versatile\nfunctionalities. These functionalities allow transportation of qubits,\nincluding teleportation, and error correction based on straightforward one- and\ntwo-qubit operations. We describe physical properties and demonstrate\nexperimental characteristics of enhancement quantum dots and single-electron\ntransistors based on InAs/GaSb composite quantum wells. We discuss the\nmaterials aspects of quantum dot quantum computing, including the materials\nwith large spin splitting such as InAs, as well as perspectives of enhancement\nmode approach in materials such as Si.",
"arxiv_id": "quant-ph/0508126",
"authors": [
"Y. B. Lyanda-Geller",
"M. J. Yang",
"C. H. Yang"
],
"categories": [
"quant-ph",
"cond-mat.other"
],
"title": "Scalable Quantum Computing with \"Enhancement\" Quantum Dots",
"url": "https://arxiv.org/abs/quant-ph/0508126"
},
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