scholarly journals Efficiency-enhanced optical parametric down conversion for mid-infrared generation on a tandem periodically poled MgO-doped stoichiometric lithium tantalate chip

2011 ◽  
Vol 19 (18) ◽  
pp. 17500 ◽  
Author(s):  
Y. H. Liu ◽  
Z. D. Xie ◽  
W. Ling ◽  
Y. Yuan ◽  
X. J. Lv ◽  
...  
Keyword(s):  
Lithium Tantalate ◽  
Periodically Poled ◽  
Mid Infrared ◽  
Optical Parametric ◽  
Parametric Down Conversion ◽  
Down Conversion

Experimental Study on the Imaging of the Squeezed State Light with -4.93dB Quantum-Noise Reduction at 1064 nm

2012 ◽  
Vol 571 ◽  
pp. 439-444 ◽  
Author(s):  
Bao Zhu Lu ◽  
Si Wen Bi ◽  
Fei Feng ◽  
Meng Hua Kang ◽  
Fei Qin
Keyword(s):  
Light Source ◽  
Quantum Noise ◽  
Squeezed State ◽  
Coherent Light ◽  
Periodically Poled ◽  
Squeezed Light ◽  
Optical Parametric ◽  
Parametric Down Conversion ◽  
Real Objects ◽  
Down Conversion

A stable amplitude squeezed state light was generated by utilizing the optical parametric down-conversion (OPDC) technique based on periodically poled KTiOPO4(PPKTP) in an optical parametric oscillator (OPO) resonator. We observed a -4.93dB of squeezing in homodyne measurement. The imaging experiments of resolution target were conducted. It shown that the imaging resolution with squeezed state light as light source was 1.26 times that of the resolution with coherent light as light source. The squeezed state light was applied for imaging of real objects and we found that the imaging with squeezed light as light source is more distinct and has less distortion.

Spatial Entanglement in Optical Parametric Down-Conversion

2007 ◽  
pp. 17-45
Author(s):  
Alessandra Gatti ◽  
Enrico Brambilla ◽  
Ottavia Jedrkiewicz ◽  
Luigi A. Lugiato
Keyword(s):  
Optical Parametric ◽  
Parametric Down Conversion ◽  
Down Conversion

scholarly journals Generation of Pure State Photon Triplets in the C-Band

Micromachines ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 775 ◽  
Author(s):  
Xi-Rong Su ◽  
Yi-Wen Huang ◽  
Tong Xiang ◽  
Yuan-Hua Li ◽  
Xian-Feng Chen
Keyword(s):  
Pure State ◽  
Schmidt Number ◽  
Second Order ◽  
Conversion Process ◽  
Gaussian Filter ◽  
Periodically Poled ◽  
Two Photon ◽  
Parametric Down Conversion ◽  
Photon States ◽  
Down Conversion

In this work, the cascaded second-order spontaneous parametric down-conversion (SPDC) is considered to produce pure state photon triplets in periodically poled lithium niobite (PPLN) doped with 5% MgO. A set of parameters are optimized through calculating the Schmidt number of two-photon states generated by each down-conversion process with different pump durations and crystal lengths. We use a Gaussian filter in part and obtain three photons with 100% purity in spectrum. We provide a feasible and unprecedented scheme to manipulate the spectrum purity of photon triplets in the communication band (C-band).

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