dorsal/arxiv
View SchemaImplementation of quantum logic operations and creation of entanglement in a silicon-based quantum computer with constant interaction
| Authors | G. P. Berman, G. W. Brown, M. E. Hawley, D. I. Kamenev, V. I. Tsifrinovich |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0512174 |
| URL | https://arxiv.org/abs/quant-ph/0512174 |
Abstract
We describe how to implement quantum logic operations in a silicon-based quantum computer with phosphorus atoms serving as qubits. The information is stored in the states of nuclear spins and the conditional logic operations are implemented through the electron spins using nuclear-electron hyperfine and electron-electron exchange interactions. The electrons in our computer should stay coherent only during implementation of one Control-Not gate. The exchange interaction is constant and selective excitations are provided by a magnetic field gradient. The quantum logic operations are implemented by rectangular radio-frequency pulses. This architecture is scalable and does not require manufacturing nanoscale electronic gates. As shown in this paper parameters of a quantum protocol can be derived analytically even for a computer with a large number of qubits using our perturbation approach. We present the protocol for initialization of the nuclear spins and the protocol for creation of entanglement. All analytical results are tested numerically using a two-qubit system.
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"abstract": "We describe how to implement quantum logic operations in a silicon-based\nquantum computer with phosphorus atoms serving as qubits. The information is\nstored in the states of nuclear spins and the conditional logic operations are\nimplemented through the electron spins using nuclear-electron hyperfine and\nelectron-electron exchange interactions. The electrons in our computer should\nstay coherent only during implementation of one Control-Not gate. The exchange\ninteraction is constant and selective excitations are provided by a magnetic\nfield gradient. The quantum logic operations are implemented by rectangular\nradio-frequency pulses. This architecture is scalable and does not require\nmanufacturing nanoscale electronic gates. As shown in this paper parameters of\na quantum protocol can be derived analytically even for a computer with a large\nnumber of qubits using our perturbation approach. We present the protocol for\ninitialization of the nuclear spins and the protocol for creation of\nentanglement. All analytical results are tested numerically using a two-qubit\nsystem.",
"arxiv_id": "quant-ph/0512174",
"authors": [
"G. P. Berman",
"G. W. Brown",
"M. E. Hawley",
"D. I. Kamenev",
"V. I. Tsifrinovich"
],
"categories": [
"quant-ph"
],
"title": "Implementation of quantum logic operations and creation of entanglement in a silicon-based quantum computer with constant interaction",
"url": "https://arxiv.org/abs/quant-ph/0512174"
},
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