dorsal/arxiv
View SchemaGeneralized GHZ States and Distributed Quantum Computing
| Authors | Anocha Yimsiriwattana, Samuel J. Lomonaco Jr |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0402148 |
| URL | https://arxiv.org/abs/quant-ph/0402148 |
Abstract
A key problem in quantum computing is finding a viable technological path toward the creation of a scalable quantum computer. One possible approach toward solving part of this problem is distributed computing, which provides an effective way of utilizing a network of limited capacity quantum computers. In this paper, we present two primitive operations, cat-entangler and cat-disentangler, which in turn can be used to implement non-local operations, e.g. non-local CNOT and quantum teleportation. We also show how to establish an entangled pair, and use entangled pairs to efficiently create a generalized GHZ state. Furthermore, we present procedures which allow us to reuse channel qubits in a sequence of non-local operations. These non-local operations work on the principle that a cat-like state, created by cat-entangler, can be used to distribute a control qubit among multiple computers. Using this principle, we show how to efficiently implement non-local control operations in many situation, including a parallel implementation of a certain kind of unitary transformation. Finally, as an example, we present a distributed version of the quantum Fourier transform.
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"abstract": "A key problem in quantum computing is finding a viable technological path\ntoward the creation of a scalable quantum computer. One possible approach\ntoward solving part of this problem is distributed computing, which provides an\neffective way of utilizing a network of limited capacity quantum computers.\n In this paper, we present two primitive operations, cat-entangler and\ncat-disentangler, which in turn can be used to implement non-local operations,\ne.g. non-local CNOT and quantum teleportation. We also show how to establish an\nentangled pair, and use entangled pairs to efficiently create a generalized GHZ\nstate. Furthermore, we present procedures which allow us to reuse channel\nqubits in a sequence of non-local operations.\n These non-local operations work on the principle that a cat-like state,\ncreated by cat-entangler, can be used to distribute a control qubit among\nmultiple computers. Using this principle, we show how to efficiently implement\nnon-local control operations in many situation, including a parallel\nimplementation of a certain kind of unitary transformation. Finally, as an\nexample, we present a distributed version of the quantum Fourier transform.",
"arxiv_id": "quant-ph/0402148",
"authors": [
"Anocha Yimsiriwattana",
"Samuel J. Lomonaco Jr"
],
"categories": [
"quant-ph"
],
"title": "Generalized GHZ States and Distributed Quantum Computing",
"url": "https://arxiv.org/abs/quant-ph/0402148"
},
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