Simultaneous near-field and far-field spatial quantum correlations in the high-gain regime of parametric down-conversion

By E. Brambilla, A. Gatti, M. Bache, L. Lugiato. 2003

155 citations recorded by the source corpus.

We study the spatial correlations of quantum fluctuations that can be observed in multimode parametric down-conversion in the regime of high gain. We investigate both a type-I and a type-II phase-matching configuration: in the latter case spatial correlations at the quantum level are shown to exist both in the near-field and in the far-field zones of the down-converted light. In the stationary and plane-wave approximation we treat the problem analytically. A stochastic model is solved numerically to obtain quantitative results beyond this approximation. The finite transverse size and pulse duration of the pump beam and other features of the system, such as spatial walk-off and diffraction are taken into account, and we show that correlations beyond the standard quantum limit exist for values of parameters consistent with realistic experiments.

Subfields: Acoustics and Ultrasonics, Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/b05e422bdf690141a49532c954ade4c5b28294e3

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In Artificial Intelligence

1. Andreas Christ
2. Wolfgang Mauerer
3. B. Brecht
4. Christine Silberhorn

In Atomic and Molecular Physics, and Optics

1. Andreas Christ
2. Wolfgang Mauerer
3. B. Brecht
4. Christine Silberhorn

Citations in the corpus

• Theory of quantum frequency conversion and type-II parametric down-conversion in the high-gain regime (2012, methodology): “The structure of this result is very similar to the equations derived by [27, 47, 25], which serves as a nice cross check of our calculations.”