Feedback cooling of a strained GaAs micromechanical beam resonator

Takayuki Watanabe; Koji Onomitsu; Hiroshi Yamaguchi

doi:10.1143/APEX.3.065201

Feedback cooling of a strained GaAs micromechanical beam resonator

Takayuki Watanabe, Koji Onomitsu, Hiroshi Yamaguchi

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6 Citations (Scopus)

Abstract

Active feedback cooling is an important technique for achieving the quantum ground state in micro/nanomechanical resonators. We studied the effect of tensile strain on the achievable minimum temperature and quantum occupation number by fabricating a doubly clamped beam resonator from a GaAs/InAlAs strained layer heterostructure. Despite the increase of the minimum temperature, we demonstrate that the occupation number can be decreased by applying tensile strain to the mechanical resonator.

Original language	English
Article number	065201
Journal	Applied Physics Express
Volume	3
Issue number	6
DOIs	https://doi.org/10.1143/APEX.3.065201
Publication status	Published - 2010 Jun

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abstract = "Active feedback cooling is an important technique for achieving the quantum ground state in micro/nanomechanical resonators. We studied the effect of tensile strain on the achievable minimum temperature and quantum occupation number by fabricating a doubly clamped beam resonator from a GaAs/InAlAs strained layer heterostructure. Despite the increase of the minimum temperature, we demonstrate that the occupation number can be decreased by applying tensile strain to the mechanical resonator.",

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Feedback cooling of a strained GaAs micromechanical beam resonator

Abstract

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