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On the quantum limit of laser amplifier detectors |
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| Authors: | Karlsson A. |
| Affiliation: | Dept. of Electron., R. Inst. of Technol., Kista ; |
| Abstract: | The quantum limit of a laser amplifier used as a detector is calculated. It is shown that the amplified output can be quantum correlated to the detector readout. However, as an information tap, the amplifying detector is no better than a lossless linear beamsplitter due to the added spontaneous emission noise |
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