Zobrazeno 1 - 10
of 167
pro vyhledávání: '"Galliou, Serge"'
Many theories that attempt to formulate a quantum description of gravity suggest the existence of a fundamental minimum length scale. A popular method for incorporating this minimum length is through a modification of the Heisenberg uncertainty princ
Externí odkaz:
http://arxiv.org/abs/2304.00688
We investigate the electromechanical properties of quartz bulk acoustic wave resonators at extreme cryogenic temperatures. By applying a DC bias voltage, we demonstrate broad frequency tuning of high-Q phonon modes in a quartz bulk acoustic wave cavi
Externí odkaz:
http://arxiv.org/abs/2207.01176
Autor:
Goryachev, Maxim, Campbell, William M., Heng, Ik Siong, Galliou, Serge, Ivanov, Eugene N., Tobar, Michael E.
Publikováno v:
Phys. Rev. Lett. 127, 071102 (2021)
This work describes the operation of a High Frequency Gravitational Wave detector based on a cryogenic Bulk Acoustic Wave (BAW) cavity and reports observation of rare events during 153 days of operation over two seperate experimental runs (Run 1 and
Externí odkaz:
http://arxiv.org/abs/2102.05859
Autor:
Bourhill, Jeremy, Carvalho, Natalia do Carmo, Goryachev, Maxim, Galliou, Serge, Tobar, Michael E.
We demonstrate the generation of coherent phonons in a quartz Bulk Acoustic Wave (BAW) resonator through the photoelastic properties of the crystal, via the coupling to a microwave cavity enhanced by a photonic lambda scheme. This is achieved by imbe
Externí odkaz:
http://arxiv.org/abs/2008.10361
Autor:
Galliou, Serge, Bon, Jérémy, Abbé, Philippe, Vicarini, Rémy, Tobar, Michael E., Goryachev, Maxim
We observe mechanical effects of an exfoliated graphene monolayer deposited on a quartz crystal substrate designed to operate as an extremely low-loss bulk-acoustic-wave cavity at liquid-helium temperature.This is achieved by sensing overtones of the
Externí odkaz:
http://arxiv.org/abs/2005.05004
Publikováno v:
Phys. Rev. Research 2, 023035 (2020)
We demonstrate excitation of phononic frequency combs in a Bulk Acoustic Wave system at a temperature of $20$mK using a single tone low power signal source. The observed ultra low power threshold is due to a combination of very high quality factor of
Externí odkaz:
http://arxiv.org/abs/2003.04308
Autor:
Wittrock, Steffen, Talatchian, Philippe, Tsunegi, Sumito, Crété, Denis, Yakushiji, Kay, Bortolotti, Paolo, Ebels, Ursula, Fukushima, Akio, Kubota, Hitoshi, Yuasa, Shinji, Grollier, Julie, Cibiel, Gilles, Galliou, Serge, Rubiola, Enrico, Cros, Vincent
The correlation of phase fluctuations in any type of oscillator fundamentally defines its spectral shape. However, in nonlinear oscillators, such as spin torque nano oscillators, the frequency spectrum can become particularly complex. This is specifi
Externí odkaz:
http://arxiv.org/abs/2001.10984
Autor:
Wittrock, Steffen, Tsunegi, Sumito, Yakushiji, Kay, Fukushima, Akio, Kubota, Hitoshi, Bortolotti, Paolo, Ebels, Ursula, Yuasa, Shinji, Cibiel, Gilles, Galliou, Serge, Rubiola, Enrico, Cros, Vincent
Publikováno v:
Phys. Rev. B 99, 235135 (2019)
Low frequency noise close to the carrier remains little explored in spin torque nano oscillators. However, it is crucial to investigate as it limits the oscillator's frequency stability. This work addresses the low offset frequency flicker noise of a
Externí odkaz:
http://arxiv.org/abs/1906.10190
Publikováno v:
Phys. Rev. B 100, 174108 (2019)
We observe magnetic effects in ultra-high quality factor crystalline quartz Bulk Acoustic Wave resonators at milli-Kelvin temperature. The study reveals existence of hysteresis loops, jumps and memory effects of acoustical resonance frequencies. Thes
Externí odkaz:
http://arxiv.org/abs/1902.02001
Autor:
Galliou, Serge, Bon, Jérémy, Abbé, Philippe, Vicarini, Rémy, Tobar, Michael E., Goryachev, Maxim
Publikováno v:
In Materials Science & Engineering B January 2023 287