dorsal/arxiv
View SchemaTeleportation improvement by inconclusive photon subtraction
| Authors | Stefano Olivares, Matteo G. A. Paris, Rodolfo Bonifacio |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0209140 |
| URL | https://arxiv.org/abs/quant-ph/0209140 |
| DOI | 10.1103/PhysRevA.67.032314 |
| Journal | Phys. Rev. A vol 67, 032314 (2003) |
Abstract
Inconclusive photon subtraction (IPS) is a conditional measurement scheme to force nonlinear evolution of a given state. In IPS the input state is mixed with the vacuum in a beam splitter and then the reflected beam is revealed by ON/OFF photodetection. When the detector clicks we have the (inconclusive) photon subtracted state. We show that IPS on both channels of an entangled twin-beam of radiation improves the fidelity of coherent state teleportation if the energy of the incoming twin-beam is below a certain threshold, which depends on the beam splitter transmissivity and the quantum efficiency of photodetectors. We show that the energy threshold diverges when the transmissivity and the efficiency approach unit and compare our results with that of previous works on {\em conclusive} photon subtraction.
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"abstract": "Inconclusive photon subtraction (IPS) is a conditional measurement scheme to\nforce nonlinear evolution of a given state. In IPS the input state is mixed\nwith the vacuum in a beam splitter and then the reflected beam is revealed by\nON/OFF photodetection. When the detector clicks we have the (inconclusive)\nphoton subtracted state. We show that IPS on both channels of an entangled\ntwin-beam of radiation improves the fidelity of coherent state teleportation if\nthe energy of the incoming twin-beam is below a certain threshold, which\ndepends on the beam splitter transmissivity and the quantum efficiency of\nphotodetectors. We show that the energy threshold diverges when the\ntransmissivity and the efficiency approach unit and compare our results with\nthat of previous works on {\\em conclusive} photon subtraction.",
"arxiv_id": "quant-ph/0209140",
"authors": [
"Stefano Olivares",
"Matteo G. A. Paris",
"Rodolfo Bonifacio"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.67.032314",
"journal_ref": "Phys. Rev. A vol 67, 032314 (2003)",
"title": "Teleportation improvement by inconclusive photon subtraction",
"url": "https://arxiv.org/abs/quant-ph/0209140"
},
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