In:
Annalen der Physik, Wiley, Vol. 533, No. 1 ( 2021-01)
Abstract:
A scheme for nonreciprocal mechanical squeezing (NMS) based on the three‐mode optomechanical interaction is proposed. In this scheme, a mechanical mode couples to a spinning whispering‐gallery‐cavity (WGC) mode and to an optical mode. An external laser is coupled into and thus drives the WGC via a waveguide. Mechanical squeezing results from the joint effect of the mechanical intrinsic nonlinearity and the quadratic optomechanical coupling, which, in the presence of strong thermal noise, is still considerable, while the nonreciprocity originates from the optical Sagnac effect. There are two NMS areas in the parametric space, one works for the laser driving from the left of the waveguide and another, from the right. For a given spinning speed of the WGC, the squeezing values in these two areas are equal if the corresponding detunings of the WGC differ from each other by two‐times of the Sagnac–Fizeau shift. At the red‐detuning resonance, the analytical results for the mechanical squeezing and cooling are obtained. The NMS scheme is robust to the thermal noise of the mechanical environment.
Type of Medium:
Online Resource
ISSN:
0003-3804
,
1521-3889
DOI:
10.1002/andp.202000343
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
1479791-4
detail.hit.zdb_id:
2165600-9
detail.hit.zdb_id:
287-2
SSG:
25
