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Can I read Gouy phase of type-I SPDC-generated biphotons on EtoBox?
Gouy phase of type-I SPDC-generated biphotons by de Brito, F.C.V.; da Paz, I.G.; Hiller, Brigitte; Araujo, Jonas B.; Sampaio, Marcos is a Physics and Astronomy article available to read on EtoBox.
What is Gouy phase of type-I SPDC-generated biphotons about?
We consider a double Gaussian approximation to describe the wavefunction of twin photons (also called a biphoton) created in a nonlinear crystal via a type-I spontaneous parametric downconversion (SPDC) process. We find that the wavefunction develops a Gouy phase while it propagates, being dependent of the two-photon correlation through the Rayleigh length. We evaluate the covariance matrix and show that the logarithmic negativity, useful in quantifying entanglement in Gaussian states, although Rayleighdependent, does not depend on the propagation distance. In addition, we show that the two-photon entanglement can be connected to the biphoton Gouy phase as these quantities are Rayleigh-lengthrelated. Then, we focus the double Gaussian biphoton wavefunction using a thin lens and calculate a Gouy phase that is in reasonable agreement with the experimental data of D. Kawase et al. published in Ref. [1].
Who reads Gouy phase of type-I SPDC-generated biphotons?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- de Brito, F.C.V.; da Paz, I.G.; Hiller, Brigitte; Araujo, Jonas B.; Sampaio, Marcos
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0375-9601)
- Published
- 2021
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)