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Tobias Kippenberg

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Related publications (465)

A hybrid on-chip optonanomechanical transducer for ultra-sensitive force measurements

We realize an integrated hybrid optonanomechanical transducer for the detection of weak forces. We propose and demonstrate with our system that dissipative feedback dramatically decreases the averaging time necessary to detect an incoherent force. (C) 2011 ...

Ieee2012

Quantum-Coherent Coupling of a Mechanical Oscillator to an Optical Cavity Mode

Tobias Kippenberg, Stefan Alexander Weis, Albert Schliesser

We demonstrate an optomechanical microresonator in which optical and mechanical degrees of freedom exchange energy at a rate exceeding the relevant decoherence rates in the system, enabling quantum control of a mechanical oscillator with light. ...

Ieee2012

Optomechanical sideband cooling of a micromechanical oscillator close to the quantum ground state

Tobias Kippenberg, Emanuel Gavartin, Stefan Alexander Weis, Albert Schliesser

Cooling a mesoscopic mechanical oscillator to its quantum ground state is elementary for the preparation and control of quantum states of mechanical objects. Here, we pre-cool a 70-MHz micromechanical silica oscillator to an occupancy below 200 quanta by t ...

2011

Cavity optomechanics and cooling nanomechanical oscillators using microresonator enhanced evanescent near-field coupling

Tobias Kippenberg

Nanomechanical oscillators are at the heart of a variety of precision measurements. This article reports on dispersive radiation coupling of nanomechanical oscillators to the evanescent near-field of toroid optical microresonators. The optomechanical coupl ...

Elsevier2011

Optomechanical Coupling in a Two-Dimensional Photonic Crystal Defect Cavity

Tobias Kippenberg, Emanuel Gavartin

Periodically structured materials can sustain both optical and mechanical modes. Here we investigate and observe experimentally the optomechanical properties of a conventional two-dimensional suspended photonic crystal defect cavity with a mode volume of s ...

2011

Thermal-noise-limited crystalline whispering-gallery-mode resonator for laser stabilization

Tobias Kippenberg, Albert Schliesser

We have stabilized an external cavity diode laser to a whispering gallery mode resonator formed by a protrusion of a single-crystal magnesium fluoride cylinder. The cylinder's compact dimensions (less than or similar to 1 cm(3)) reduce the sensitivity to v ...

2011

Octave Spanning Tunable Frequency Comb from a Microresonator

Tobias Kippenberg, Emanuel Gavartin, Tobias Herr

We report the generation of an octave-spanning optical frequency comb in a continuous wave laser pumped microresonator. The generated comb spectrum covers the wavelength range from 990 to 2170 nm without relying on additional external broadening. Continuou ...

2011

Determination of the vacuum optomechanical coupling rate using frequency noise calibration

Tobias Kippenberg, Albert Schliesser

The strength of optomechanical interactions in a cavity optomechanical system can be quantified by a vacuum coupling rate g(0) analogous to cavity quantum electrodynamics. This single figure of merit removes the ambiguity in the frequently quoted coupling ...

2010

Theoretical Analysis of Mechanical Displacement Measurement Using a Multiple Cavity Mode Transducer

Tobias Kippenberg, Jens Dobrindt

We present an optomechanical displacement transducer that relies on three cavity modes parametrically coupled to a mechanical oscillator and whose frequency spacing matches the mechanical resonance frequency. The additional resonances allow reaching the st ...

2010

Measuring nanomechanical motion with an imprecision below the standard quantum limit

Tobias Kippenberg, Emanuel Gavartin

We report a room-temperature measurement of nanomechanical motion with an imprecision below the standard quantum limit (SQL), using cavity-enhanced optical near fields. Fundamental thermodynamical cavity frequency fluctuation limits the total imprecision t ...

2010

Cavity optomechanics with ultrahigh-Q crystalline microresonators

Tobias Kippenberg, Albert Schliesser

We present the observation of optomechanical coupling in crystalline whispering-gallery-mode (WGM) resonators. The high purity of the material enables optical quality factors in excess of 10(10) and finesse exceeding 10(6), as well as mechanical quality fa ...

2010

Optomechanically Induced Transparency

Tobias Kippenberg, Emanuel Gavartin, Stefan Alexander Weis, Albert Schliesser

Electromagnetically induced transparency is a quantum interference effect observed in atoms and molecules, in which the optical response of an atomic medium is controlled by an electromagnetic field. We demonstrated a form of induced transparency enabled b ...

American Association for the Advancement of Science2010

Cavity Optomechanics with Whispering-Gallery Mode Optical Micro-Resonators

Tobias Kippenberg, Albert Schliesser

Parametric coupling of optical and mechanical degrees of freedom forms the basis of many ultra-sensitive measurements of both force and mechanical displacement. An optical cavity with a mechanically compliant boundary enhances the optomechanical interactio ...

2010

Frequency comb assisted diode laser spectroscopy for measurement of microcavity dispersion

Tobias Kippenberg

Although invented for precision measurements of single atomic transitions, frequency combs have also become a versatile tool for broadband spectroscopy in recent years. Here, we present a novel and simple approach for broadband spectroscopy, combining the ...

Nature Publishing Group2009

Near-field cavity optomechanics with nanomechanical oscillators

Tobias Kippenberg, Albert Schliesser

Cavity-enhanced radiation-pressure coupling between optical and mechanical degrees of freedom allows quantum-limited position measurements and gives rise to dynamical backaction, enabling amplification and cooling of mechanical motion. Here, we demonstrate ...

2009

Cryogenic properties of optomechanical silica microcavities

Tobias Kippenberg, Albert Schliesser

We report the study of the optical and mechanical properties of high-Q fused silica microtoroidal resonators at cryogenic temperatures (down to 1.6 K). A thermally induced optical multistability is observed and theoretically described, originating from the ...

2009

Purcell-Factor-Enhanced Scattering from Si Nanocrystals in an Optical Microcavity

Tobias Kippenberg

Scattering processes in an optical microcavity are investigated for the case of silicon nanocrystals embedded in an ultra-high-Q toroid microcavity. Using a novel measurement technique based on the observable mode splitting, we demonstrate that light scatt ...

2009

Resolved-sideband cooling and position measurement of a micromechanical oscillator close to the Heisenberg uncertainty limit

Tobias Kippenberg, Albert Schliesser

The theory of quantum measurement of mechanical motion, describing the mutual coupling of a meter and a measured object, predicts a variety of phenomena such as quantum backaction, quantum correlations and non-classical states of motion. In spite of great ...

2009

Cavity optomechanics: Back-action at the mesoscale

Tobias Kippenberg

The coupling of optical and mechanical degrees of freedom is the underlying principle of many techniques to measure mechanical displacement, from macroscale gravitational wave detectors to microscale cantilevers used in scanning probe microscopy. Recent ex ...

American Association for the Advancement of Science2008

PHOTONICS Nanomechanics gets the shakes

Tobias Kippenberg

2008

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