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Parametric oscillation in vertical triple microcavities.

C Diederichs¹, J Tignon, G Dasbach

¹Laboratoire Pierre Aigrain, Ecole Normale Supérieure, 24 rue Lhomond, F-75231 Paris Cedex 05, France.

|April 14, 2006

Summary

This summary is machine-generated.

Researchers demonstrated parametric oscillation in a monolithic semiconductor triple microcavity, enabling efficient generation of entangled photons. This breakthrough paves the way for compact, alignment-free sources for quantum information technologies.

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Area of Science:

Nonlinear optics
Quantum optics
Semiconductor nanophotonics

Background:

Optical parametric oscillators (OPOs) generate new frequencies via nonlinear processes.
Current OPOs often use bulky nonlinear crystals and external cavities, limiting integration.
Efficient OPOs are crucial for quantum information applications like cryptography and entangled photon generation.

Purpose of the Study:

To demonstrate parametric oscillation in a monolithic semiconductor microcavity.
To develop alignment-free, integrated sources for quantum optics.
To explore potential for electrically pumped semiconductor parametric oscillators.

Main Methods:

Fabrication of a monolithic semiconductor triple microcavity.
Utilizing vertical wave propagation for parametric oscillation.
Characterization of signal, idler, and pump wave interactions within the nanostructure.

Main Results:

Successful demonstration of parametric oscillation in the semiconductor microcavity.
Generation of signal and idler waves with potential for entangled photon pair production.
Achieved low pump threshold intensity, indicating feasibility for electrical pumping.

Conclusions:

Monolithic semiconductor microcavities offer a promising platform for integrated parametric oscillators.
This approach enables alignment-free operation and efficient coupling for quantum applications.
The results suggest a pathway towards electrically pumped, compact sources for quantum information processing.