dorsal/arxiv
View SchemaElectrical detection of 31P spin quantum states
| Authors | A. R. Stegner, C. Boehme, H. Huebl, M. Stutzmann, K. Lips, M. S. Brandt |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0607178 |
| URL | https://arxiv.org/abs/quant-ph/0607178 |
| DOI | 10.1038/nphys465 |
Abstract
In recent years, a variety of solid-state qubits has been realized, including quantum dots, superconducting tunnel junctions and point defects. Due to its potential compatibility with existing microelectronics, the proposal by Kane based on phosphorus donors in Si has also been pursued intensively. A key issue of this concept is the readout of the P quantum state. While electrical measurements of magnetic resonance have been performed on single spins, the statistical nature of these experiments based on random telegraph noise measurements has impeded the readout of single spin states. In this letter, we demonstrate the measurement of the spin state of P donor electrons in silicon and the observation of Rabi flops by purely electric means, accomplished by coherent manipulation of spin-dependent charge carrier recombination between the P donor and paramagnetic localized states at the Si/SiO2 interface via pulsed electrically detected magnetic resonance. The electron spin information is shown to be coupled through the hyperfine interaction with the P nucleus, which demonstrates the feasibility of a recombination-based readout of nuclear spins.
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"abstract": "In recent years, a variety of solid-state qubits has been realized, including\nquantum dots, superconducting tunnel junctions and point defects. Due to its\npotential compatibility with existing microelectronics, the proposal by Kane\nbased on phosphorus donors in Si has also been pursued intensively. A key issue\nof this concept is the readout of the P quantum state. While electrical\nmeasurements of magnetic resonance have been performed on single spins, the\nstatistical nature of these experiments based on random telegraph noise\nmeasurements has impeded the readout of single spin states. In this letter, we\ndemonstrate the measurement of the spin state of P donor electrons in silicon\nand the observation of Rabi flops by purely electric means, accomplished by\ncoherent manipulation of spin-dependent charge carrier recombination between\nthe P donor and paramagnetic localized states at the Si/SiO2 interface via\npulsed electrically detected magnetic resonance. The electron spin information\nis shown to be coupled through the hyperfine interaction with the P nucleus,\nwhich demonstrates the feasibility of a recombination-based readout of nuclear\nspins.",
"arxiv_id": "quant-ph/0607178",
"authors": [
"A. R. Stegner",
"C. Boehme",
"H. Huebl",
"M. Stutzmann",
"K. Lips",
"M. S. Brandt"
],
"categories": [
"quant-ph"
],
"doi": "10.1038/nphys465",
"title": "Electrical detection of 31P spin quantum states",
"url": "https://arxiv.org/abs/quant-ph/0607178"
},
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