Title :
Single-photon statistics generated by narrow-band cavity-enhanced parametric down-conversion
Author :
Koch, Lars ; Scholz, Matthias ; Benson, Oliver
Author_Institution :
Inst. fur Phys. - AG Nanooptik, Humboldt-Univ. zu Berlin, Berlin, Germany
Abstract :
This paper presents an experiment on single-photon spectrum generation using an optical parametric oscillator device with cavity-enhanced parametric down-conversion. A PPKTP crystal inside a cavity far below threshold is pumped in order to create signal-idler photon pairs. Triple-resonance of pump, signal, and idler fields are achieved using a compensating KTP crystal. Long-term stability, ultra-high brightness (14000 biphotons/s per mW), and MHz signal bandwidth behind a single-mode fiber on the cesium D1 line (894.3 nm) are attained by locking the cavity length of the pump via the Hansch-Couillaud method. The spectral width of the parametric fluorescence is also derived using the signal-to-idler cross-correlation measurements, and has been found to be < 3 MHz.
Keywords :
caesium; fluorescence; optical correlation; optical fibres; optical frequency conversion; optical parametric oscillators; optical pumping; potassium compounds; spectral line narrowing; Cs; Hansch-Couillaud method; KTP; PPKTP crystal; cavity-enhanced parametric down-conversion; cesium D1 line; compensating KTP crystal; idler fields; long-term stability; narrow-band parametric down-conversion; optical parametric oscillator; optical pumping; parametric fluorescence; pump triple-resonance; signal triple-resonance; signal-idler photon pairs; signal-to-idler cross-correlation measurements; single-mode fiber; single-photon spectrum generation; single-photon statistics; ultrahigh brightness; wavelength 894.3 nm; Bandwidth; Brightness; Narrowband; Nonlinear optics; Optical devices; Optical pumping; Oscillators; Parametric statistics; Photonic crystals; Stability;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5191455