dorsal/arxiv
View SchemaQuantum computation using weak nonlinearities: robustness against decoherence
| Authors | Hyunseok Jeong |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0512117 |
| URL | https://arxiv.org/abs/quant-ph/0512117 |
| DOI | 10.1103/PhysRevA.73.052320 |
| Journal | Phys. Rev. A 73, 052320 (2006) |
Abstract
We investigate decoherence effects in the recently suggested quantum computation scheme using weak nonlinearities, strong probe coherent fields, detection and feedforward methods. It is shown that in the weak-nonlinearity-based quantum gates, decoherence in nonlinear media it can be made arbitrarily small simply by using arbitrarily strong probe fields, if photon number resolving detection is used. On the contrary, we find that homodyne detection with feedforward is not appropriate for this scheme because in this case decoherence rapidly increases as the probe field gets larger.
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"abstract": "We investigate decoherence effects in the recently suggested quantum\ncomputation scheme using weak nonlinearities, strong probe coherent fields,\ndetection and feedforward methods. It is shown that in the\nweak-nonlinearity-based quantum gates, decoherence in nonlinear media it can be\nmade arbitrarily small simply by using arbitrarily strong probe fields, if\nphoton number resolving detection is used. On the contrary, we find that\nhomodyne detection with feedforward is not appropriate for this scheme because\nin this case decoherence rapidly increases as the probe field gets larger.",
"arxiv_id": "quant-ph/0512117",
"authors": [
"Hyunseok Jeong"
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"categories": [
"quant-ph"
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"doi": "10.1103/PhysRevA.73.052320",
"journal_ref": "Phys. Rev. A 73, 052320 (2006)",
"title": "Quantum computation using weak nonlinearities: robustness against decoherence",
"url": "https://arxiv.org/abs/quant-ph/0512117"
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