dorsal/arxiv
View SchemaQuantum noise reduction in singly resonant optical devices
| Authors | C. Cabrillo, J. L. Roldan, P. Garcia-Fernandez |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9810020 |
| URL | https://arxiv.org/abs/quant-ph/9810020 |
Abstract
Quantum noise in a model of singly resonant frequency doubling including phase mismatch and driving in the harmonic mode is analyzed. The general formulae about the fixed points and their stability as well as the squeezing spectra calculated linearizing around such points are given. The use of a nonlinear normalization allows to disentangle in the spectra the dynamic response of the system from the contributions of the various noisy inputs. A general ``reference'' model for one-mode systems is developed in which the dynamic aspects of the problem are not contaminated by static contributions from the noisy inputs. The physical insight gained permits the elaboration of general criteria to optimize the noise suppression performance. With respect to the squeezing in the fundamental mode the optimum working point is located near the first turning point of the dispersive bistability induced by cascading of the second order nonlinear response. The nonlinearities induced by conventional crystals appear enough to reach it being the squeezing ultimately limited by the escape efficiency of the cavity. In the case of the harmonic mode both, finite phase mismatch and/or harmonic mode driving allow for an optimum dynamic response of the system something not possible in the standard phase matched Second Harmonic Generation. The squeezing is then limited by the losses in the harmonic mode, allowing for very high degrees of squeezing because of the non-resonant nature of the mode. This opens the possibility of very high performances using artificial materials with resonantly enhanced nonlinearities. It is also shown how it is possible to substantially increase the noise reduction and at the same time to more than double the output power for parameters corresponding to reported experiments.
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"abstract": "Quantum noise in a model of singly resonant frequency doubling including\nphase mismatch and driving in the harmonic mode is analyzed. The general\nformulae about the fixed points and their stability as well as the squeezing\nspectra calculated linearizing around such points are given. The use of a\nnonlinear normalization allows to disentangle in the spectra the dynamic\nresponse of the system from the contributions of the various noisy inputs. A\ngeneral ``reference\u0027\u0027 model for one-mode systems is developed in which the\ndynamic aspects of the problem are not contaminated by static contributions\nfrom the noisy inputs. The physical insight gained permits the elaboration of\ngeneral criteria to optimize the noise suppression performance. With respect to\nthe squeezing in the fundamental mode the optimum working point is located near\nthe first turning point of the dispersive bistability induced by cascading of\nthe second order nonlinear response. The nonlinearities induced by conventional\ncrystals appear enough to reach it being the squeezing ultimately limited by\nthe escape efficiency of the cavity. In the case of the harmonic mode both,\nfinite phase mismatch and/or harmonic mode driving allow for an optimum dynamic\nresponse of the system something not possible in the standard phase matched\nSecond Harmonic Generation. The squeezing is then limited by the losses in the\nharmonic mode, allowing for very high degrees of squeezing because of the\nnon-resonant nature of the mode. This opens the possibility of very high\nperformances using artificial materials with resonantly enhanced\nnonlinearities. It is also shown how it is possible to substantially increase\nthe noise reduction and at the same time to more than double the output power\nfor parameters corresponding to reported experiments.",
"arxiv_id": "quant-ph/9810020",
"authors": [
"C. Cabrillo",
"J. L. Roldan",
"P. Garcia-Fernandez"
],
"categories": [
"quant-ph"
],
"title": "Quantum noise reduction in singly resonant optical devices",
"url": "https://arxiv.org/abs/quant-ph/9810020"
},
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