Interference effects in spontaneous two-photon parametric scattering from two 
macroscopic regions

Burlakov, AV; Chekhova, MV; Klyshko, DN; Kulik, SP; Penin, AN; Shih, YH; Strekalov, DV

doi:10.1103/PhysRevA.56.3214

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Interference effects in spontaneous two-photon parametric scattering from two macroscopic regions

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Citation

Burlakov, A., Chekhova, M., Klyshko, D., Kulik, S., Penin, A., Shih, Y., et al. (1997). Interference effects in spontaneous two-photon parametric scattering from two macroscopic regions. PHYSICAL REVIEW A, 56(4), 3214-3225. doi:10.1103/PhysRevA.56.3214.

Cite as: https://hdl.handle.net/21.11116/0000-0001-DFA1-E

Abstract

Two types of interference were observed using two-photon spontaneous parametric radiation from two nonlinear interaction regions. Two experimental setups analogous to the Young and Mach-Zehnder interferometers were used. An interesting feature of the two-photon Young interference is the opposite conditions for its observation by two different methods: by measuring intensity of light at a single frequency and by measuring correlation of intensities at two conjugated frequencies (method of coincidences). Two-photon Mach-Zehnder interference resembles the Ramsey method of separated fields, which is used in beam spectroscopy. A simple macroscopic quantum model agrees well with the experimental results and enables their interpretation in terms of ''biphotons'' carrying information about the pump phase.