Dissipative optomechanics studies the coupling of the motion of an optical element to the decay rate of a cavity. We propose and theoretically explore a realization of this system in the optical domain, using a combined Michelson--Sagnac interferometer, which enables a strong and tunable dissipative coupling. Quantum interference in such a setup results in the suppression of the lower motional sideband, leading to strongly enhanced cooling in the non-sideband-resolved regime. With state-of-the-art parameters, ground-state cooling and low-power quantum-limited position transduction are both possible. The possibility of a strong and tunable dissipative coupling opens up a new route towards observation of fundamental optomechanical effects such as ponderomotive squeezing or nonlinear dynamics. Beyond optomechanics, the method suggested here can be readily transferred to other setups involving such systems as nonlinear media, atomic ensembles, or single atoms.
Experimental investigation of the limitations of polarisation optics for future gravitational wave detectors based on the polarisation Sagnac speedmeter
Vector field dark matter search with Sagnac interferometer
National Central University（中央大学）；Center for High Energy and High Field (CHiP), National Central University（高能高场中心）；Institute of Physics, Academia Sinica（中央研究院物理研究所）；Institute of Particle and Nuclear Studies, High Energy Acceleration Research Organization (KEK)（高能加速器研究机构粒子核研究部）；Phenikaa University（菲尼亚卡大学）；Department of Physics, Rikkyo University（立教大学物理系）；Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), WPI, UTIAS, The University of Tokyo（东京大学理学院宇宙线物质宇宙国际研究教育中心）
Nonreciprocal Coupling Induced Non-Hermitian Entanglement in Optomechanical Systems
Northeast Normal University（东北师范大学）；University of Science and Technology of China（中国科学技术大学）；RIKEN Center for Quantum Computing (RQC)（理化学研究所量子计算中心）；Shangrao Normal University（上饶师范学院）
DC response of an interferometer topology with an L-shaped cavity: a tabletop study
Wuhan University（武汉大学）；Beijing Normal University（北京师范大学）；Tsinghua University（清华大学）；Laboratoire d’Annecy de Physique des Particules, CNRS/IN2P3（国家科学研究中心粒子物理研究所安纳西实验室）；LIGO Laboratory, California Institute of Technology（加州理工学院LIGO实验室）；OzGrav, Australian National University（澳大利亚国立大学）
