Nonlinear power dependence of the spectral properties of an optical parametric oscillator below threshold in the quantum regime
Nonlinear power dependence of the spectral properties of an optical parametric oscillator below threshold in the quantum regime
复制标题
量子态中低于阈值的光参量振荡器的光谱特性的非线性功率依赖性
DOI：
10.1088/1367-2630/ab9a87
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发表时间：
2019
影响因子：
3.3
通讯作者：
C. Marquardt
中科院分区：
文献类型：
--
作者：
G. Shafiee;D. Strekalov;A. Otterpohl;F. Sedlmeir;G. Schunk;U. Vogl;H. Schwefel;G. Leuchs;C. Marquardt
由腔辅助参数下转换（PDC）获得的光子对和预传单光子在量子通信和技术中起着重要作用。这激发了对参数光的光谱和时间特性的深入研究，无论是在光学参数振荡器（OPO）阈值之上，半经典方法是合理的，还是在它之下，线性腔近似是适用的。追求更高的双光子发射率导致了一个有趣的中间状态，介于高于OPO阈值和非常低的泵浦功率之间，其中OPO仍然大大低于阈值，但非线性腔现象不能再被忽视了。在这里，我们研究了这种中间状态，并表明光子对的光谱和时间特性，以及它们的发射速率，可能与广泛接受的线性模型有很大的不同。观测到的下转换光场的时间相关现象包括频率拉拔和频率展宽。在设计高倍率空腔辅助自发PDC源的实际应用时，需要考虑这些因素。
Photon pairs and heralded single photons, obtained from cavity-assisted parametric down conversion (PDC), play an important role in quantum communications and technology. This motivated a thorough study of the spectral and temporal properties of parametric light, both above the optical parametric oscillator (OPO) threshold, where the semiclassical approach is justified, and deeply below it, where the linear cavity approximation is applicable. The pursuit of a higher two-photon emission rate leads into an interesting intermediate regime, between above OPO threshold and very low pump power, where the OPO still operates considerably below the threshold but the nonlinear cavity phenomena cannot be neglected anymore. Here, we investigate this intermediate regime and show that the spectral and temporal properties of the photon pairs, as well as their emission rate, may significantly differ from the widely accepted linear model. The observed phenomena include frequency pulling and broadening in the temporal correlation for the down-converted optical fields. These factors need to be taken into account when devising practical applications of the high-rate cavity-assisted spontaneous PDC sources.
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影响因子：
10.4
作者：
Schunk, Gerhard;Vogl, Ulrich;Marquardt, Christoph
通讯作者：
Marquardt, Christoph
影响因子：
3.8
作者：
M. Leidinger;S. Fieberg;N. Waasem;F. Kühnemann;K. Buse;I. Breunig
通讯作者：
M. Leidinger;S. Fieberg;N. Waasem;F. Kühnemann;K. Buse;I. Breunig
影响因子：
16.6
作者：
Foertsch, Michael;Fuerst, Josef U.;Marquardt, Christoph
通讯作者：
Marquardt, Christoph
DOI：
10.1038/lsa.2017.30
发表时间：
2017-08
期刊：
Light, science & applications
影响因子：
--
作者：
Kreinberg S;Chow WW;Wolters J;Schneider C;Gies C;Jahnke F;Höfling S;Kamp M;Reitzenstein S
通讯作者：
Reitzenstein S