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Enhancing the purity of single photons in parametric down-conversion through simultaneous pump-beam and crystal-domain engineering
Baghdasar Baghdasaryan, Fabian Steinlechner, Stephan Fritzsche
Spontaneous parametric down-conversion (SPDC) has shown great promise in the generation of pure and indistinguishable single photons. Photon pairs produced in bulk crystals are hig…
Maximizing the Validity of the Gaussian Approximation for the biphoton State from Parametric Downconversion
Baghdasar Baghdasaryan, Fabian Steinlechner, Stephan Fritzsche
Spontaneous parametric down-conversion (SPDC) is widely used in quantum applications based on photonic entanglement. The efficiency of photon pair generation is often characterized…
Spectral Properties of Transverse Laguerre-Gauss Modes in Parametric Down-Conversion
Carlos Sevilla-Gutiérrez, Varun Raj Kaipalath, Baghdasar Baghdasaryan +3
The first color photos of the parametric down-conversion (PDC) emission cone illustrate the correlation of longitudinal- and transverse momentum in the process, i.e., wavelength-de…
Generalized description of the spatio-temporal biphoton State in spontaneous parametric down-conversion
Baghdasar Baghdasaryan, Carlos Sevilla-Gutiérrez, Fabian Steinlechner +1
Spontaneous parametric down-conversion (SPDC) is a widely used source for photonic entanglement. Years of focused research have led to a solid understanding of the process, but a c…
Double-slit experiment in momentum space
I. P. Ivanov, D. Seipt, A. Surzhykov +1
Young's classic double-slit experiment demonstrates the reality of interference when waves and particles travel simultaneously along two different spatial paths. Here, we propose a…