Abstract
We present a simple technique to reduce the emission rate of higher-order photon events from pulsed spontaneous parametric down-conversion. The technique uses extra-cavity control over a mode locked ultrafast laser to simultaneously increase repetition rate and reduce the energy of each pulse from the pump beam. We apply our scheme to a photonic quantum gate, showing improvements in the non-classical interference visibility for 2-photon and 4-photon experiments, and in the quantum-gate fidelity and entangled state production in the 2-photon case. (C) 2011 Optical Society of America
| Original language | English |
|---|---|
| Pages (from-to) | 22698-22708 |
| Number of pages | 11 |
| Journal | Optics Express |
| Volume | 19 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 7 Nov 2011 |
Keywords
- SINGLE-PHOTON SOURCE
- ROOM-TEMPERATURE
- QUANTUM-DOT