TY - JOUR
T1 - 5-mg suspended mirror driven by measurement-induced backaction
AU - Matsumoto, Nobuyuki
AU - Komori, Kentaro
AU - Michimura, Yuta
AU - Hayase, Gen
AU - Aso, Yoichi
AU - Tsubono, Kimio
N1 - Publisher Copyright:
© 2015 American Physical Society. ©2015 American Physical Society.
PY - 2015/9/15
Y1 - 2015/9/15
N2 - Quantum mechanics predicts superpositions of position states even for macroscopic objects. Recently, the use of a quasifreely suspended mirror combined with a laser was proposed to prepare such states [H. Müller-Ebhardt, Phys. Rev. Lett. 100, 013601 (2008)PRLTAO0031-900710.1103/PhysRevLett.100.013601]. One of the key milestones towards this goal is the preparation of the mechanical oscillator mainly driven by measurement-induced backaction in the quantum regime. Here we describe the observation of backaction acting on a suspended 5-mg mirror in the classical regime. Furthermore, its quantum component is estimated to be larger than the thermal fluctuating force due to internal damping of the suspension, by a factor of 1.4±0.2 at 325 Hz.
AB - Quantum mechanics predicts superpositions of position states even for macroscopic objects. Recently, the use of a quasifreely suspended mirror combined with a laser was proposed to prepare such states [H. Müller-Ebhardt, Phys. Rev. Lett. 100, 013601 (2008)PRLTAO0031-900710.1103/PhysRevLett.100.013601]. One of the key milestones towards this goal is the preparation of the mechanical oscillator mainly driven by measurement-induced backaction in the quantum regime. Here we describe the observation of backaction acting on a suspended 5-mg mirror in the classical regime. Furthermore, its quantum component is estimated to be larger than the thermal fluctuating force due to internal damping of the suspension, by a factor of 1.4±0.2 at 325 Hz.
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U2 - 10.1103/PhysRevA.92.033825
DO - 10.1103/PhysRevA.92.033825
M3 - Article
AN - SCOPUS:84942155408
VL - 92
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 3
M1 - 033825
ER -