dorsal/arxiv
View SchemaQuantum computing via measurements only
| Authors | Robert Raussendorf, Hans J. Briegel |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0010033 |
| URL | https://arxiv.org/abs/quant-ph/0010033 |
Abstract
A quantum computer promises efficient processing of certain computational tasks that are intractable with classical computer technology. While basic principles of a quantum computer have been demonstrated in the laboratory, scalability of these systems to a large number of qubits, essential for practical applications such as the Shor algorithm, represents a formidable challenge. Most of the current experiments are designed to implement sequences of highly controlled interactions between selected particles (qubits), thereby following models of a quantum computer as a (sequential) network of quantum logic gates. Here we propose a different model of a scalable quantum computer. In our model, the entire resource for the quantum computation is provided initially in form of a specific entangled state (a so-called cluster state) of a large number of qubits. Information is then written onto the cluster, processed, and read out form the cluster by one-particle measurements only. The entangled state of the cluster thus serves as a universal substrate for any quantum computation. Cluster states can be created efficiently in any system with a quantum Ising-type interaction (at very low temperatures) between two-state particles in a lattice configuration.
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"abstract": "A quantum computer promises efficient processing of certain computational\ntasks that are intractable with classical computer technology. While basic\nprinciples of a quantum computer have been demonstrated in the laboratory,\nscalability of these systems to a large number of qubits, essential for\npractical applications such as the Shor algorithm, represents a formidable\nchallenge. Most of the current experiments are designed to implement sequences\nof highly controlled interactions between selected particles (qubits), thereby\nfollowing models of a quantum computer as a (sequential) network of quantum\nlogic gates. Here we propose a different model of a scalable quantum computer.\nIn our model, the entire resource for the quantum computation is provided\ninitially in form of a specific entangled state (a so-called cluster state) of\na large number of qubits. Information is then written onto the cluster,\nprocessed, and read out form the cluster by one-particle measurements only. The\nentangled state of the cluster thus serves as a universal substrate for any\nquantum computation. Cluster states can be created efficiently in any system\nwith a quantum Ising-type interaction (at very low temperatures) between\ntwo-state particles in a lattice configuration.",
"arxiv_id": "quant-ph/0010033",
"authors": [
"Robert Raussendorf",
"Hans J. Briegel"
],
"categories": [
"quant-ph"
],
"title": "Quantum computing via measurements only",
"url": "https://arxiv.org/abs/quant-ph/0010033"
},
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