Narrow-band single photons from a single-resonant optical parametric oscillator far below threshold
Abstract
We present a single-resonant optical parametric oscillator pumped far below threshold as a source for narrow-band single photons. Spontaneous generation of single photons via parametric downconversion is modified and follows the cavity transfer function. Cross-correlation measurements between signal and idler beams show a cavity bandwidth of 62MHz. As the main improvement to prior realizations, our cavity is locked to the pump beam via the Hänsch-Couillaud method and therefore allows the continuous generation of heralded single photons with long-term stability.
- Publication:
-
Applied Physics Letters
- Pub Date:
- November 2007
- DOI:
- 10.1063/1.2803761
- Bibcode:
- 2007ApPhL..91s1104S
- Keywords:
-
- 42.65.Ky;
- 42.65.Lm;
- 42.65.Yj;
- 42.50.-p;
- Frequency conversion;
- harmonic generation including higher-order harmonic generation;
- Parametric down conversion and production of entangled photons;
- Optical parametric oscillators and amplifiers;
- Quantum optics