Extremely Low Loss Phonon-Trapping Cryogenic Acoustic Cavities for Future Physical Experiments

Galliou, Serge; Goryachev, Maxim; Bourquin, R.; Abbé, Philippe; Aubry, J. P.; Tobar, Michael E.

doi:10.1038/srep02132

Cited by 113 publications

(146 citation statements)

References 30 publications

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“…It should be noticed that below a few kilohertz, internal friction (of a longitudinal or transverse wave) in an homogeneous medium is dominated by thermoelastic dissipation [26]. This is no longer the case when frequencies are greater than 5 MHz at low temperatures, like in the experiments discussed in this paper: phonon-phonon dissipation dominates inside the substrate [6,18,19,[27][28][29].…”

Section: Discussionmentioning

confidence: 65%

“…Their Q-factor is typically 1.1 × 10 6 at 10 MHz when operating under vacuum at room temperature. Once at 4 K, their Q-factor can increase by two orders of magnitude or more, depending on several factors: material quality, surface roughness, stresses induced by the environment, etc [6,16]. Resonators have first been measured according to an electrodeless version, i.e.…”

Section: Experimental Techniquementioning

confidence: 99%

“…the complex admittance Y = G + jB is plotted in the complex plane. This provides a way to extract efficiently and accurately the corresponding quality factor in the case of a piezoelectric resonator [6,16] (see Fig. 2).…”

Section: Experimental Techniquementioning

confidence: 99%

“…In the traditional applications, metal coating is the preferred method to couple to mechanical motion by depositing a pair of electrodes directly on the surface of the resonator. It is well known that the resonance frequency is mass-sensitive and makes such a resonator, or in other words, acoustic cavity [6], usable as a sensor, a so-called quartz-crystal micro-balance. Moreover, a specific reactive layer can be deposited on * serge.galliou@femto-st.fr † deleglise@lkb.upmc.fr ‡ maxim.goryachev@uwa.edu.au § g.cagnoli@lma.in2p3.fr the metallic coating to selectively detect a given component by mass-loading.…”

Section: Introductionmentioning

confidence: 99%

“…The same assumption is made in the present work where due to extremely low losses of the crystal substrate, a high-quality quartz trapped-energy resonator, the overall system dissipation measured via its mechanical Quality factor is determined by coatings. With BAW quartz resonator losses decreasing from 10 −7 to almost as low as 10 −10 at liquid helium temperatures [5,6], the approach might be used applied for tests from 20K and below. The numerical values can be obtained for modes spanning over almost two decades, 1-100MHz, as measurements of high overtone (OT) modes has been demonstrated [5].…”

Section: Introductionmentioning

confidence: 99%

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A new method of probing mechanical losses of coatings at cryogenic temperatures

Galliou

Deléglise

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et al. 2016

Review of Scientific Instruments

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A new method of probing mechanical losses and comparing the corresponding deposition processes of metallic and dielectric coatings in 1-100 MHz frequency range and cryogenic temperatures is presented. The method is based on the use of extremely high-quality quartz acoustic cavities whose internal losses are orders of magnitude lower than any available coatings nowadays. The approach is demonstrated for Chromium, Chromium/Gold and a multilayer tantala/silica coatings. The Ta2O5/SiO2 coating has been found to exhibit a loss angle lower than 1.6 × 10 −5 near 30 MHz at 4 K. The results are compared to the previous measurements.

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Section: Discussionmentioning

confidence: 65%

Section: Experimental Techniquementioning

confidence: 99%

Section: Experimental Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A new method of probing mechanical losses of coatings at cryogenic temperatures

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Review of Scientific Instruments

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Micromachined Mechanical Resonant Sensors: From Materials, Structural Designs to Applications

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Adv Materials Technologies

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Driving a micro and nanomechanical structure to resonance and observing its resonant motion in the physical world have led to numerous fundamental discoveries in physics, sciences, chemistry, biology, and engineering, as well as device commercialization. Scaling down mechanical structures from micrometric to nanometric size has enabled the utilization of resonant motions to probe material properties and various dynamical phenomena in quantum coherence and squeezing. Recent advances in material sciences and nanofabrication resulted in successful demonstration of ultra‐high frequency operation (GHz range) and ultra‐high quality factor (10 billion) micromachined mechanical resonators (MMRs). The resonant motion of these structures has been utilized as an indispensable tool to weigh biological and chemical species at resolution of atomic mass unit, sense a force as small as zepto‐newton, and to detect numerous other physical parameters. Here, a systematic view on the resonant sensing transduction is provided, underlying physics, and sensing structures realized with micro/nano‐electromechanical systems (MEMS/NEMS) technologies. It is also describe the roles of nanomaterials and structures, nano‐fabrication and rational designs on the resonance frequency and quality factor of MMRs toward high‐performance sensing. This paper discusses the most recent advances in the development of MMRs for material characterization as well as biological, chemical, and physical sensing. Finally, the paper discusses the challenges and perspectives on design, fabrication, and developments of resonant sensors with high quality factor toward quantum sensing, and ultra‐high sensitivity and resolution for classical sensing applications.

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Optically referenced broadband electronic synthesizer with 15 digits of resolution

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et al. 2016

Laser & Photonics Reviews

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Fundamental science, as well as all communications and navigation systems, are heavily reliant on the phase, timing, and synchronization provided by low‐noise and agile frequency sources. Although research into varied photonic and electronic schemes have strived to improve upon the spectral purity of microwave and millimeter‐wave signals, the reliance on conventional electronic synthesis for tuning has resulted in limited progress in broadband sources. Using a digital‐photonic synthesizer architecture that derives its time‐base from a high‐stability optical reference cavity, we generate frequency‐agile and wideband microwave signals with exceptional dynamic range and with a fractional frequency instability of 1 × 10−15 at 1 s. The presented architecture demonstrates digitally controlled, user defined and broadband frequency tuning from RF to 100 GHz with orders‐of‐magnitude improvement in noise performance over room‐temperature electronic wide‐bandwidth synthesis schemes.

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Extremely Low Loss Phonon-Trapping Cryogenic Acoustic Cavities for Future Physical Experiments

Cited by 113 publications

References 30 publications

A new method of probing mechanical losses of coatings at cryogenic temperatures

A new method of probing mechanical losses of coatings at cryogenic temperatures

Micromachined Mechanical Resonant Sensors: From Materials, Structural Designs to Applications

Optically referenced broadband electronic synthesizer with 15 digits of resolution

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