Release-free silicon-on-insulator cavity optomechanics

Sarabalis, Christopher J.; Dahmani, Yanni D.; Patel, Rishi N.; Hill, John; Safavi-Naeini, Amir H.

doi:10.1364/optica.4.001147

Cited by 29 publications

(26 citation statements)

References 16 publications

(16 reference statements)

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“…where Σ opt (ω) = −ihG 2 |α| 2 (χ α (ω) − χ * α (−ω)) /m eff (36) and χ α (ω) = (i(∆ − ω) + κ/2) −1 is the optical resonance response function. The expression in equation 35 represents the response of a damped mechanical resonance that is modified by a "self-energy" term, Σ opt (ω), due to interaction with optical resonance. The real and imaginary parts of this self-energy cause an effective modification of the mechanical frequency and linewidth ω m and γ in .…”

Section: A2 Back-action On the Mechanical Modementioning

confidence: 99%

Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics

Safavi-Naeini

Thourhout

Baets

et al. 2019

Optica

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183

167

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Radio-frequency communication systems have long used bulk-and surface-acoustic-wave devices supporting ultrasonic mechanical waves to manipulate and sense signals. These devices have greatly improved our ability to process microwaves by interfacing them to orders-ofmagnitude slower and lower loss mechanical fields. In parallel, long-distance communications have been dominated by low-loss infrared optical photons. As electrical signal processing and transmission approaches physical limits imposed by energy dissipation, optical links are now being actively considered for mobile and cloud technologies. Thus there is a strong driver for wavelength-scale mechanical wave or "phononic" circuitry fabricated by scalable semiconductor processes. With the advent of these circuits, new micro-and nanostructures that combine electrical, optical and mechanical elements have emerged. In these devices, such as optomechanical waveguides and resonators, optical photons and gigahertz phonons are ideally matched to one another as both have wavelengths on the order of micrometers. The development of phononic circuits has thus emerged as a vibrant field of research pursued for optical signal processing and sensing applications as well as emerging quantum technologies. In this review, we discuss the key physics and figures of merit underpinning this field. We also summarize the state of the art in nanoscale electro-and optomechanical systems with a focus on scalable platforms such as silicon. Finally, we give perspectives on what these new systems may bring and what challenges they face in the coming years. In particular, we believe hybrid electro-and optomechanical devices incorporating highly coherent and compact mechanical elements on a chip have significant untapped potential for electro-optic modulation, quantum microwave-tooptical photon conversion, sensing and microwave signal processing.

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Section: A2 Back-action On the Mechanical Modementioning

confidence: 99%

Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics

Safavi-Naeini

Thourhout

Baets

et al. 2019

Optica

Self Cite

183

167

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“…This principle of separating device from bath ensures that the nanomechanical mode temperature is nearly independent of the SiN membrane material temperature, hence providing immunity to local self-heating effects of probe light absorbed by the membrane. Such self-heating effects are a dominant source of uncertainty and noise in quantum optomechanical thermometry [6] and other low temperature quantum optomechanics experiments [31].The thermal bath engineering technique that we have developed can be readily applied to different size and frequency scale of nanomechanical systems [7,32] to improve the accuracy of optomechanical temperature metrology. Our technique of exploiting acoustic radiation channels potentially provides a building block for quantum networks where information is acoustically transduced between coherently coupled quantum optomechanical systems.…”

Section: Heating Laser Cyclementioning

confidence: 99%

Detecting Acoustic Blackbody Radiation with an Optomechanical Antenna

Singh,

Purdy

2019

Preprint

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Nanomechanical systems are generally embedded in a macroscopic environment where the sources of thermal noise are difficult to pinpoint. We engineer a silicon nitride membrane optomechanical resonator such that its thermal noise is acoustically driven by a spatially well-defined remote macroscopic bath. This bath acts as an acoustic blackbody emitting and absorbing acoustic radiation through the silicon substrate. Our optomechanical system acts as a sensitive detector for the blackbody temperature and for photoacoustic imaging. We demonstrate that the nanomechanical mode temperature is governed by the blackbody temperature and not by the local material temperature of the resonator. Our work presents a route to mitigate self-heating effects in optomechanical thermometry and other quantum optomechanics experiments, as well as acoustic communication in quantum information.

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“…3. Consequently, they do not suffer mechanical radiation losses in the absence of disorder [20,27]. Mechanical modes of the structure can be understood in terms of waves in the sockets and waves in the core.…”

Section: Optomechanical Antennas For Silicon Photonicsmentioning

confidence: 99%

Optomechanical antennas for on-chip beam-steering

Sarabalis

Laer

2018

Opt. Express

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Rapid and low-power control over the direction of a radiating light field is a major challenge in photonics and a key enabling technology for emerging sensors and free-space communication links. Current approaches based on bulky motorized components are limited by their high cost and power consumption, while on-chip optical phased arrays face challenges in scaling and programmability. Here, we propose a solid-state approach to beam-steering using optomechanical antennas. We combine recent progress in simultaneous control of optical and mechanical waves with remarkable advances in on-chip optical phased arrays to enable low-power and full two-dimensional beam-steering of monochromatic light. We present a design of a silicon photonic system made of photonic-phononic waveguides that achieves 44° field of view with 880 resolvable spots by sweeping the mechanical wavelength with about a milliwatt of mechanical power. Using mechanical waves as nonreciprocal, active gratings allows us to quickly reconfigure the beam direction, beam shape, and the number of beams. It also enables us to distinguish between light that we send and receive.

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Release-free silicon-on-insulator cavity optomechanics

Cited by 29 publications

References 16 publications

Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics

Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics

Detecting Acoustic Blackbody Radiation with an Optomechanical Antenna

Optomechanical antennas for on-chip beam-steering

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