Feedback-cooling the fundamental torsional mechanical mode of a tapered optical fiber to 30 mK

Tebbenjohanns, Felix; Jia, Jihao; Antesberger, Michael; Prasad, Adarsh S.; Pucher, Sebastian; Rauschenbeutel, Arno; Volz, Jürgen; Schneeweiß, Philipp

doi:10.48550/arxiv.2301.07792

Cited by 2 publications

(1 citation statement)

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“…Experimental investigations of torsional optomechanics of suspended waveguides now go beyond the detection and measurement of the mechanical effects of optical angular momentum transfer, for instance toward the elaboration of quantum experiments in the macroscopic world. This requires preparing the system as close as possible to its motional ground state, and one can mention very recent experimental attempts using either passive 33 or active 34 feedback approaches.…”

Section: Microwave and Radiowave Experimentsmentioning

confidence: 99%

Torsion pendulum driven by the angular momentum of light: Beth’s legacy continues

Brasselet

2023

Adv. Photon.

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.The optical angular momentum is ubiquitous to the science of light, especially whenever the polarization state and the spatial distribution of the phase are involved, which are most often associated with the spin and orbital parts of the total angular momentum, respectively. Notably, the independent introduction of these two contributions to the total optical angular momentum was accompanied by suggestions regarding the possible detection of their mechanical effects using a torsion pendulum. Today, the classical and quantum mechanical aspects of spin and orbital angular momentum of light and their mutual coupling remain active research topics offering exciting perspectives for photonic technologies. Our brief historical overview shows how the torsion pendulum has accompanied scientific advances on mechanical effects based on the angular degrees of freedom of light since Beth’s pioneering contribution published in 1935.

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Section: Microwave and Radiowave Experimentsmentioning

confidence: 99%

Torsion pendulum driven by the angular momentum of light: Beth’s legacy continues

Brasselet

2023

Adv. Photon.

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Optical nanofiber stretcher

Beugnot¹,

Godet²,

Huy³

et al. 2023

Opt. Lett.

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Piezoelectric stretching of optical fiber is a technique that enables the creation of optical delays of a few picoseconds; this is useful in a variety of applications in interferometry or optical cavities. Most commercial fiber stretchers involve lengths of fiber of a few tens of meters. Using a 120-mm-long optical micro-nanofiber, we can create a compact optical delay line that achieves tunable delays of up to 19 ps at telecommunication wavelengths. The high elasticity of silica and the micron-scale diameter allow this significant optical delay to be achieved with low tensile force while keeping the overall length short. We successfully report both static and dynamic operation of this novel, to the best of our knowledge, device. It could find application in interferometry and laser cavity stabilization, where short optical paths and strong resistance to the environment would be required.

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Feedback-cooling the fundamental torsional mechanical mode of a tapered optical fiber to 30 mK

Cited by 2 publications

References 44 publications

Torsion pendulum driven by the angular momentum of light: Beth’s legacy continues

Torsion pendulum driven by the angular momentum of light: Beth’s legacy continues

Optical nanofiber stretcher

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