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Journal Article

Quantum Light from a Whispering-Gallery-Mode Disk Resonator

MPS-Authors
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Fuerst,  J. U.
International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society;
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Strekalov,  D. V.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Elser,  D.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Aiello,  A.
Optical Quantum Information Theory, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Andersen,  U. L.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Marquardt,  Ch
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs,  G.
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Fuerst, J. U., Strekalov, D. V., Elser, D., Aiello, A., Andersen, U. L., Marquardt, C., et al. (2011). Quantum Light from a Whispering-Gallery-Mode Disk Resonator. PHYSICAL REVIEW LETTERS, 106(11): 113901. doi:10.1103/PhysRevLett.106.113901.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6A13-7
Abstract
Optical parametric down-conversion has proven to be a valuable source of nonclassical light. The process is inherently able to produce twin-beam correlations along with individual intensity squeezing of either parametric beam, when pumped far above threshold. Here, we present for the first time the direct observation of intensity squeezing of -1.2 dB of each of the individual parametric beams in parametric down-conversion by use of a high quality whispering-gallery-mode disk resonator. In addition, we observed twin-beam quantum correlations of -2.7 dB with this cavity. Such resonators feature strong optical confinement and offer tunable coupling to an external optical field. This work exemplifies the potential of crystalline whispering-gallery-mode resonators for the generation of quantum light. The simplicity of this device makes the application of quantum light in various fields highly feasible.