Publication

Coherence properties of polaritons in semiconductor microcavities

Benoît Marie Joseph Deveaud, Jean-Louis Staehli, Cristiano Ciuti, Michele Saba, Stefan Kundermann
2004
Journal Articles

Abstract

In this work we present the coherent control of polariton parametric scattering with weak phase locked probe pulses. It is demonstrated that the signal emission arising from the parametric scattering is completely coherent for moderate excitation power, whereas at high pump density the dynamics appears less coherent due to the depletion of the pump polariton reservoir. It is furthermore demonstrated that the phase of the probe pulses controls the emission from signal, pump, and idler at the same time.

Official source

https://infoscience.epfl.ch/entities/publication/888864d4-6fc3-4b80-834f-39ca7338655d

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Benoît Marie Joseph Deveaud, Jean-Louis Staehli, Cristiano Ciuti, Michele Saba, Stefan Kundermann
2004
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/888864d4-6fc3-4b80-834f-39ca7338655d

About this result

Related concepts (32)

Coherence (physics)

In physics, coherence expresses the potential for two waves to interfere. Two monochromatic beams from a single source always interfere. Physical sources are not strictly monochromatic: they may be partly coherent. Beams from different sources are mutually incoherent. When interfering, two waves add together to create a wave of greater amplitude than either one (constructive interference) or subtract from each other to create a wave of minima which may be zero (destructive interference), depending on their relative phase.

Coherent state

In physics, specifically in quantum mechanics, a coherent state is the specific quantum state of the quantum harmonic oscillator, often described as a state which has dynamics most closely resembling the oscillatory behavior of a classical harmonic oscillator. It was the first example of quantum dynamics when Erwin Schrödinger derived it in 1926, while searching for solutions of the Schrödinger equation that satisfy the correspondence principle.

Pump

A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation and air conditioning systems.

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Coherence properties of polaritons in semiconductor microcavities

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