Cavity Optomagnonics with Spin-Orbit Coupled Photons

Osada, Alto; Hisatomi, Ryusuke; Noguchi, Atsushi; Tabuchi, Yoshihiko; Yamazaki, Rekishu; Usami, Koji; Sadgrove, Mark; Yalla, Ramachandrarao; Nomura, Masahiro; Nakamura, Y.

doi:10.1103/physrevlett.116.223601

Cited by 395 publications

(330 citation statements)

References 32 publications

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“…Such a possibility has been discussed theoretically [311,312], and experimentally explored in ferromagnetic microspheres made from yttrium iron garnet [313][314][315][316]. The conventional Faraday effect as well as non-reciprocal sidebands generation at the magnon frequency is observed in these experiments.…”

Section: Electro-optical Phenomena and Applications Of Wgmrsmentioning

confidence: 99%

Nonlinear and Quantum Optics with Whispering Gallery Resonators

Strekalov

2015

Cleo: 2015

114

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Optical whispering gallery modes (WGMs) derive their name from a famous acoustic phenomenon of guiding a wave by a curved boundary observed nearly a century ago. This phenomenon has a rather general nature, equally applicable to sound and all other waves. It enables resonators of unique properties attractive both in science and engineering. Very high quality factors of optical WGM resonators persisting in a wide wavelength range spanning from radio frequencies to ultraviolet light, their small mode volume, and tunable in-and out-coupling make them exceptionally efficient for nonlinear optical applications. Nonlinear optics facilitates interaction of photons with each other and with other physical systems, and is of prime importance in quantum optics. In this paper we review numerous applications of WGM resonators in nonlinear and quantum optics. We outline the current areas of interest, summarize progress, highlight difficulties, and discuss possible future development trends in these areas.

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Section: Electro-optical Phenomena and Applications Of Wgmrsmentioning

confidence: 99%

Nonlinear and Quantum Optics with Whispering Gallery Resonators

Strekalov

2015

Cleo: 2015

114

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“…The mechanism behind the optomagnonic coupling is the Faraday effect, where the angle of polarization of the light changes as it propagates through a magnetic material. Very recent first experiments in this regime show that this is a promising route, by demonstrating coupling between optical modes and magnons, and advances in this field are expected to develop rapidly [23][24][25][26][27]. models.…”

Section: Introductionmentioning

confidence: 99%

Coupled spin-light dynamics in cavity optomagnonics

Kusminskiy¹,

2016

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Experiments during the past two years have shown strong resonant photon-magnon coupling in microwave cavities, while coupling in the optical regime was demonstrated very recently for the first time. Unlike with microwaves, the coupling in optical cavities is parametric, akin to optomechanical systems. This line of research promises to evolve into a new field of optomagnonics, aimed at the coherent manipulation of elementary magnetic excitations by optical means. In this work we derive the microscopic optomagnonic Hamiltonian. In the linear regime the system reduces to the well-known optomechanical case, with remarkably large coupling. Going beyond that, we study the optically induced nonlinear classical dynamics of a macrospin. In the fast cavity regime we obtain an effective equation of motion for the spin and show that the light field induces a dissipative term reminiscent of Gilbert damping. The induced dissipation coefficient however can change sign on the Bloch sphere, giving rise to self-sustained oscillations. When the full dynamics of the system is considered, the system can enter a chaotic regime by successive period doubling of the oscillations.

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“…Recently, strong coupling between a microwave cavity mode and ferromagnetic resonance (FMR) has been realized at room temperature [6][7][8][9][10][11][12][13][14][15][16][17] . Exchange interactions lock the high density of spins in YIG into a macro-spin state, leading to strong coupling with a cavity mode which can be adjusted using an external magnetic field.…”

mentioning

confidence: 99%

Indirect coupling between two cavity modes via ferromagnetic resonance

Hyde

Bai

Harder

et al. 2016

Applied Physics Letters

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We experimentally realize indirect coupling between two cavity modes via strong coupling with the ferromagnetic resonance in Yttrium Iron Garnet (YIG). We find that some indirectly coupled modes of our system can have a higher microwave transmission than the individual uncoupled modes. Using a coupled harmonic oscillator model, the influence of the oscillation phase difference between the two cavity modes on the nature of the indirect coupling is revealed. These indirectly coupled microwave modes can be controlled using an external magnetic field or by tuning the cavity height. This work has potential for use in controllable optical devices and information processing technologies.The indirect coupling of cavity modes via a waveguide has been studied theoretically and experimentally for use in optical information processing 1 . This indirect coupling dramatically modifies the transmission spectra, and is widely used for optical filtering, buffering, switching, and sensing in photonic crystal structures 2-5 . For micro/nano disk optical cavities, coupling properties are determined by the spatial distance between the disk and the waveguide during the fabrication process. Therefore, a tunable coupling between indirectly coupled cavity modes is required for potential applications.Recently, strong coupling between a microwave cavity mode and ferromagnetic resonance (FMR) has been realized at room temperature 6-17 . Exchange interactions lock the high density of spins in YIG into a macro-spin state, leading to strong coupling with a cavity mode which can be adjusted using an external magnetic field. Potential applications of this form of strong coupling are currently being explored. For example, indirect coupling between the FMR in two YIG spheres has produced dark magnon modes with potential uses in information storage technologies 18 , and the FMR of YIG has been indirectly coupled with a qubit through a microwave cavity mode 19 . Instead of using a microwave cavity mode to build a bridge between two oscillators, we have used the FMR in YIG to produce indirect coupling between two cavity modes.In this work, we present two cavity modes which indirectly couple via their strong coupling with the FMR in YIG at room temperature. The two cavity modes are labelled h ω1 (ω) and h ω2 (ω) respectively, and are independent of each other when there is no direct coupling between them. Here ω 1 and ω 2 are the uncoupled resonance frequencies of each cavity mode and ω is the input microwave frequency. The two cavity modes can be indirectly coupled with each other when they both individually interact with the FMR in YIG and this indirect coupling can be controlled using an external magnetic field. We found that the microwave transmission properties change dramatically for the coupled modes as the external field is tuned. Our experimental results,

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Cavity Optomagnonics with Spin-Orbit Coupled Photons

Cited by 395 publications

References 32 publications

Nonlinear and Quantum Optics with Whispering Gallery Resonators

Nonlinear and Quantum Optics with Whispering Gallery Resonators

Coupled spin-light dynamics in cavity optomagnonics

Indirect coupling between two cavity modes via ferromagnetic resonance

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