dorsal/arxiv
View SchemaLong-distance teleportation of atomic qubit via optical interferometry
| Authors | Y. P. Huang, M. G. Moore |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0609214 |
| URL | https://arxiv.org/abs/quant-ph/0609214 |
Abstract
The problem of long-distance teleportation of single-atom qubits via a common photonic channel is examined within the framework of a Mach-Zender optical interferometer. As expected, when a coherent state is used as input, a high-finesse optical cavity is required to overcome sensitivity to spontaneous emission. However, we find that a number-squeezed light field in a twin-Fock state can in principle create useful entanglement without cavity-enhancement. Both approaches require single photon counting detectors, and best results are obtained by combining cavity-feedback with twin-fock inputs. Such an approach may allow a fidelity of $.99$ using a two-photon input and currently available mirror and detector technology. In addition, the present approach can be conveniently extended to generate multi-site entanglement and entanglement swapping, both of which are necessities in quantum networks.
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"abstract": "The problem of long-distance teleportation of single-atom qubits via a common\nphotonic channel is examined within the framework of a Mach-Zender optical\ninterferometer. As expected, when a coherent state is used as input, a\nhigh-finesse optical cavity is required to overcome sensitivity to spontaneous\nemission. However, we find that a number-squeezed light field in a twin-Fock\nstate can in principle create useful entanglement without cavity-enhancement.\nBoth approaches require single photon counting detectors, and best results are\nobtained by combining cavity-feedback with twin-fock inputs. Such an approach\nmay allow a fidelity of $.99$ using a two-photon input and currently available\nmirror and detector technology. In addition, the present approach can be\nconveniently extended to generate multi-site entanglement and entanglement\nswapping, both of which are necessities in quantum networks.",
"arxiv_id": "quant-ph/0609214",
"authors": [
"Y. P. Huang",
"M. G. Moore"
],
"categories": [
"quant-ph"
],
"title": "Long-distance teleportation of atomic qubit via optical interferometry",
"url": "https://arxiv.org/abs/quant-ph/0609214"
},
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