Interferometric Bell-state preparation using femtosecond-pulse-pumped spontaneous parametric down-conversion
Interferometric Bell-state preparation using femtosecond-pulse-pumped spontaneous parametric down-conversion
We present theoretical and experimental study of preparing maximally entangled two-photon polarization states, or Bell states, using femtosecond pulse pumped spontaneous parametric down-conversion (SPDC). First, we show how the inherent distinguishability in femtosecond pulse pumped type-II SPDC can be removed by using an interferometric technique without spectral and amplitude post-selection. …