dorsal/arxiv
View SchemaQuantum Computation and Bell-state Measurement with Double-Dot Molecules
| Authors | Hui Zhang, Guo-Ping Guo, Tao Tu, Guang-Can Guo |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0702230 |
| URL | https://arxiv.org/abs/quant-ph/0702230 |
| DOI | 10.1103/PhysRevA.76.012335 |
| Journal | Physical Review A 76, 012335 (2007) |
Abstract
We propose a quantum computation architecture of double-dot molecules, where the qubit is encoded in the molecule two-electron spin states. By arranging the two dots inside each molecule perpendicular to the qubit scaling line, the interactions between neighboring qubits are largely simplified and the scaling to multi-qubit system becomes straightforward. As an Ising-model effective interaction can be expediently switched on and off between any two neighboring molecules by adjusting the potential offset between the two dots, universal two-qubit gates can be implemented without requiring time-dependent control of the tunnel coupling between the dots. A Bell-state measurement scheme for qubit encoded in double-dot singlet and triplet states is also proposed for quantum molecules arranged in this way.
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"abstract": "We propose a quantum computation architecture of double-dot molecules, where\nthe qubit is encoded in the molecule two-electron spin states. By arranging the\ntwo dots inside each molecule perpendicular to the qubit scaling line, the\ninteractions between neighboring qubits are largely simplified and the scaling\nto multi-qubit system becomes straightforward. As an Ising-model effective\ninteraction can be expediently switched on and off between any two neighboring\nmolecules by adjusting the potential offset between the two dots, universal\ntwo-qubit gates can be implemented without requiring time-dependent control of\nthe tunnel coupling between the dots. A Bell-state measurement scheme for qubit\nencoded in double-dot singlet and triplet states is also proposed for quantum\nmolecules arranged in this way.",
"arxiv_id": "quant-ph/0702230",
"authors": [
"Hui Zhang",
"Guo-Ping Guo",
"Tao Tu",
"Guang-Can Guo"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.76.012335",
"journal_ref": "Physical Review A 76, 012335 (2007)",
"title": "Quantum Computation and Bell-state Measurement with Double-Dot Molecules",
"url": "https://arxiv.org/abs/quant-ph/0702230"
},
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