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Journal Article

Probing the Negative Wigner Function of a Pulsed Single Photon Point by Point

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Laiho,  Kaisa
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201029

Cassemiro,  Katiuscia N.
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201196

Silberhorn,  Christine
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Laiho, K., Cassemiro, K. N., Gross, D., & Silberhorn, C. (2010). Probing the Negative Wigner Function of a Pulsed Single Photon Point by Point. PHYSICAL REVIEW LETTERS, 105(25): 253603. doi:10.1103/PhysRevLett.105.253603.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6A7F-8
Abstract
We investigate quantum properties of pulsed light fields point by point in phase space. We probe the negative region of the Wigner function of a single photon generated by the means of waveguided parametric down conversion. This capability is achieved by employing loss-tolerant photon-number resolving detection, allowing us to directly observe the oscillations of the photon statistics in dependence of applied displacements in phase space. Our scheme is highly mode sensitive and can reveal the single-mode character of the signal state.