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Author

  • Michael Tobar
2012

Testing for Periodic Changes in Fundamental Constants using Long-Term Comparison of the SYRTE Cs Fountains and H-masers

Tobar, M., Stanwix, P., Abgrall, M., Bize, S., Clairon, A., Guéna, J., Laurent, P., Rosenbusch, P., Rovera, D., Santarelli, G. & Wolf, P., 2012, 2012 IEEE International Frequency Control Symposium Proceedings. Baltimore, MD: IEEE, Institute of Electrical and Electronics Engineers, Vol. 1. p. 1 - 4

Research output: Chapter in Book/Conference paperConference paper

2011

Rotating Dual Cryogenic Sapphire Oscillators with 10−16 Fractional Frequency Stability for Tests of Lorentz Invariance

Parker, S., Stanwix, P., Tobar, M., Hartnett, J., Ivanov, E., Nagel, M. & Peters, A., 2011, 2011 Joint Conference of the IEEE International Frequency Control and the European Frequency and Time Forum Proceedings. Nguyen, C. T-C. & Santarelli, G. (eds.). San Fransisco, CA: IEEE, Institute of Electrical and Electronics Engineers, 2 p.

Research output: Chapter in Book/Conference paperConference paper

2017

Determination of low loss in isotopically pure single crystal 28Si at low temperatures and single microwave photon energy

Kostylev, N., Goryachev, M., Bulanov, A. D., Gavva, V. A. & Tobar, M. E., 20 Mar 2017, In : Scientific Reports. 7, 44813.

Research output: Contribution to journalArticle

Open Access
5 Citations (Scopus)

Higher order reentrant post modes in cylindrical cavities

McAllister, B. T., Shen, Y., Flower, G., Parker, S. R. & Tobar, M. E., 14 Oct 2017, In : Journal of Applied Physics. 122, 14, 144501.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2013

Extremely low loss phonon-trapping cryogenic acoustic cavities for future physical experiments

Galliou, S., Goryachev, M., Bourquin, R., Abbé, P., Aubry, J. P. & Tobar, M., 2013, In : Scientific Reports. 3, p. 6pp

Research output: Contribution to journalArticle

Open Access
57 Citations (Scopus)

Using Microwave Cavities to Test Lorentz Invariance

Parker, S. R., Stanwix, P. L., Ivanov, E. N., Tobar, M. E., Nagel, M., Kovalchuk, E. V. & Peters, A., 2013, Proceedings of the 6th Meeting on CPT and Lorentz Symmetry. Kostelecký, V. A. (ed.). World Scientific Publishing, p. 131-134 4 p.

Research output: Chapter in Book/Conference paperConference paper

2011

Microwave properties of semi-insulating silicon carbide between 10 and 40 GHz and at cryogenic temperatures

Hartnett, J., Mouneyrac, D., Krupka, J., Le Floch, J-M., Tobar, M. & Cros, D., 2011, In : Journal of Applied Physics. 109, 6, p. 4pp

Research output: Contribution to journalArticle

15 Citations (Scopus)
2017

Low-temperature microwave properties of biaxial YAlO3

Carvalho, N. C., Goryachev, M., Krupka, J., Bushev, P. & Tobar, M. E., 27 Jul 2017, In : Physical Review B: Covering condensed matter and materials physics. 96, 4, 7 p., 045141.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2018

Tunable supermode dielectric resonators for axion dark-matter haloscopes

McAllister, B. T., Flower, G., Tobar, L. E. & Tobar, M. E., 26 Jan 2018, In : Physical Review Applied. 9, 1, 014028.

Research output: Contribution to journalArticle

11 Citations (Scopus)
2016

Quality factor measurements of various types of quartz crystal resonators operating near 4 K

Galliou, S., Goryachev, M., Abbe, P., Vacheret, X., Tobar, M. & Bourquin, R., 2016, In : IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 63, 7, p. 975-980

Research output: Contribution to journalArticle

6 Citations (Scopus)

Enhanced sensitivity to Lorentz invariance violations in short-range gravity experiments

Shao, C. G., Chen, Y. F., Tan, Y. J., Luo, J., Yang, S. Q. & Tobar, M. E., 2016, In : Physical Review D - Particles, Fields, Gravitation and Cosmology. 94, 10, 104061.

Research output: Contribution to journalArticle

11 Citations (Scopus)
2013

Anomalously strong nonlinearity of unswept quartz acoustic cavities at liquid helium temperatures

Goryachev, M., Farr, W. G., Ivanov, E. & Tobar, M., 2013, In : Journal of Applied Physics. 114, 9, p. 094506-1 - 094506-7

Research output: Contribution to journalArticle

7 Citations (Scopus)
2011

High-resolution flicker-noise-free frequency measurements of weak microwave signals

Creedon, D., Tobar, M., Ivanov, E. & Hartnett, J., 2011, In : IEEE Transactions on Microwave Theory and Techniques. 59, 6, p. 1651-1657

Research output: Contribution to journalArticle

2014

Testing periodic local position invariance using long-term comparison of the SYRTE atomic fountains and H-masers

Tobar, M. E., Stanwix, P. L., McFerran, J. J., Guena, J., Abgrall, M., Bize, S., Clairon, A., Laurent, P., Rosenbusch, P., Rovera, D. & Santarelli, G., 2014, Proceedings of the 6th Meeting on CPT and Lorentz Symmetry, CPT 2013. Kostelecky, V. A. (ed.). USA: World Scientific Publishing, p. 37-40 4 p. (Proceedings of the 6th Meeting on CPT and Lorentz Symmetry, CPT 2013).

Research output: Chapter in Book/Conference paperConference paper

1 Citation (Scopus)
2019

Experimental implementation of a large scale multipost re-entrant array

Goryachev, M., Jeong, J. & Tobar, M. E., 1 May 2019, In : Applied Physics Express. 12, 5, 4 p., 054002.

Research output: Contribution to journalArticle

2017

Glasses: Achieving long phonon lifetimes

Goryachev, M. & Tobar, M. E., 22 Feb 2017, In : Nature Materials. 16, 3, p. 285-286 2 p.

Research output: Contribution to journalComment/debate

2016

Acoustic Tests of Lorentz Symmetry Using Quartz Oscillators

Lo, A., Haslinger, P., Mizrachi, E., Anderegg, L., Mueller, H., Hohensee, M., Goryachev, M. & Tobar, M., 24 Feb 2016, In : Physical Review X. 6, 1, 011018.

Research output: Contribution to journalArticle

Open Access
19 Citations (Scopus)
2014
2018

The ORGAN Experiment

McAllister, B. T. & Tobar, M. E., 1 Jan 2018, Microwave Cavities and Detectors for Axion Research - Proceedings of the 2nd International Workshop. Carosi, G., Rybka, G. & van Bibber, K. (eds.). USA: Springer Science + Business Media, Vol. 211. p. 119-125 7 p.

Research output: Chapter in Book/Conference paperConference paper

2014

Metal bulk foil resistor characterization for BAW application at low cryogenic temperatures

Bara-Maillet, R., Goryachev, M., Creedon, D., Le Floch, J-M. & Tobar, M., Mar 2014, In : IEEE Transactions on Instrumentation and Measurement. 63, 3, p. 628-632

Research output: Contribution to journalArticle

2 Citations (Scopus)
2017

Improving phonon sector tests of Lorentz Invariance

Goryachev, M., Ivanov, E. N., Tobar, M. E., Haslinger, P. & Muller, H., 27 Oct 2017, 2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFC 2017 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 104-105 2 p. 8088814

Research output: Chapter in Book/Conference paperConference paper

2012

Analysis of the whispering gallery mode sapphire Fe 3+ maser under magnetic field

Mrad, M., Bourgeois, P. Y., Tobar, M., Kersalé, Y. & Giordano, V., 2012, In : EPJ Applied Physics. 57, p. 7pp

Research output: Contribution to journalArticle

2 Citations (Scopus)
2014

Piezoelectric voltage coupled reentrant cavity resonator

Carvalho, N., Fan, Y., Le Floch, J-M. & Tobar, M., 14 Oct 2014, In : Review of Scientific Instruments. 85, 10, 4 p., 104705.

Research output: Contribution to journalArticle

Open Access
File
9 Citations (Scopus)
234 Downloads (Pure)
2013

Hidden sector photon coupling of resonant cavities

Parker, S., Rybka, G. & Tobar, M., 2013, In : Physical Review D. 87, 11, p. 6pp

Research output: Contribution to journalArticle

11 Citations (Scopus)

Giant g-factors of natural impurities in synthetic quartz

Goryachev, M., Farr, W. G. & Tobar, M., 2013, In : Applied Physics Letters. 103, 26, p. 262404-1 - 262404-3

Research output: Contribution to journalArticle

16 Citations (Scopus)
2011

High Precision Microwave Interferometers and Oscillators for Applied and Fundamental Physics Applications

Tobar, M. E., Ivanov, E. N., Hartnett, J. G., Le Floch, J-M. G. & Stanwix, P. L., 2011, 2010 International Conference on Electromagnetics in Advanced Applications. Graglia, R. D. & Smith, P. D. (eds.). Sydney, NSW, Australia: IEEE, Institute of Electrical and Electronics Engineers, p. 803-806 4 p.

Research output: Chapter in Book/Conference paperConference paper

Generation of 100 GHz with Parts in 1016 Frequency Stability Using Cryogenic Sapphire Oscillators

Bara, R., Le Floch, J-M. G., Tobar, M. E., Stanwix, P. L., Parker, S. R., Hartnett, J. G. & Ivanov, E. N., 2011, Proceedings of the 5th Joint Conference of the 65th IEEE International Frequency Control Symposium and the 25th European Frequency and Time Forum . Nguyen, C. T-C. & Santarelli, G. (eds.). IEEE, Institute of Electrical and Electronics Engineers, 5977766

Research output: Chapter in Book/Conference paperConference paper

Microwave cavity hidden sector photon threshold crossing

Povey, R., Hartnett, J. & Tobar, M., 2011, In : Physical Review D - Particles, Fields, Gravitation and Cosmology. 84, 5, p. N/A

Research output: Contribution to journalArticle

7 Citations (Scopus)
2016

Impact of coatings on the quality factor of a quartz crystal resonator at liquid helium temperature

Galliou, S., Vacheret, X., Abbe, P., Bourquin, R., Deleglise, S., Neuhaus, L., Karassouloff, T., Briant, T., Cohadon, P. F., Heidmann, A., Goryachev, M., Tobar, M. E., Dolique, V., Pinard, L., Michel, C. & Cagnoli, G., 2016, 2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings. Partridge, A. (ed.). IEEE, Institute of Electrical and Electronics Engineers

Research output: Chapter in Book/Conference paperConference paper

2015
Open Access
12 Citations (Scopus)
2018

Rigorous ESR spectroscopy of Fe3+ impurity ion with oxygen vacancy in ferroelectric SrTiO3 crystal at 20 mK

Hosain, M. A., Le Floch, J-M., Krupka, J. & Tobar, M. E., 25 Jul 2018, In : Journal of Physics-Condensed Matter. 30, 29, 6 p., 295805.

Research output: Contribution to journalArticle

2011

High Q-factor sapphire whispering gallery mode microwave resonator at single photon energies and millikelvin temperatures

Creedon, D., Reshitnyk, Y., Farr, W., Martinis, J. M., Duty, T. L. & Tobar, M., 2011, In : Applied Physics Letters. 98, 22, p. 3pp

Research output: Contribution to journalArticle

34 Citations (Scopus)
2012

Extremely low-loss acoustic phonons in a quartz bulk acoustic wave resonator at millikelvin temperature

Goryachev, M., Creedon, D., Ivanov, E., Galliou, S., Bourquin, R. & Tobar, M., 2012, In : Applied Physics Letters. 100, 24, p. 5pp

Research output: Contribution to journalArticle

58 Citations (Scopus)
2014

Testing speed of light isotropy using rotating cryogenic sapphire microwave oscillators

Parker, S., Nagel, M., Kovalchuk, E. V., Stanwix, P., Ivanov, E., Hartnett, J. G., Peters, A. & Tobar, M., 2014, IFCS 2014 - 2014 IEEE International Frequency Control Symposium, Proceedings.

Research output: Chapter in Book/Conference paperConference paper

2019

Precision Frequency Metrology for Axion Searches

Goryachev, M., Mcallister, B. & Tobar, M. E., 2019, IFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings. IEEE, Institute of Electrical and Electronics Engineers, 8856108. (IFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings).

Research output: Chapter in Book/Conference paperConference paper

2012

Status report of the Schenberg gravitational wave antenna

Aguiar, O. D., Barroso, J. J., Carvalho, N. C., Castro, P. J., Cedeño M, C. E., Da Silva Costa, C. F., De Araujo, J. C. N., Evangelista, E. F. D., Furtado, S. R., Miranda, O. D., Moraes, P. H. R. S., Pereira, E. S., Silveira, P. R., Stellati, C., Oliveira Jr., N. F., Gratens, X., De Paula, L. A. N., De Souza, S. T., Marinho Jr., R. M., Oliveira, F. G. & 21 othersFrajuca, C., Bortoli, F. S., Pires, R., Bessada, D. F. A., Magalhães, N. S., Alves, M. E. S., Fauth, A. C., Macedo, R. P., Saa, A., Tavares, D. B., Brandão, C. S. S., Andrade, L. A., Marranghello, G. F., Chirenti, C. B. M. H., Frossati, G., De Waard, A., Tobar, M., Costa, C. A., Johnson, W. W., De Freitas Pacheco, J. A. & Pimentel, G. L., 2012, In : Journal of Physics: Conference Series. 363, 0, p. 9pp

Research output: Contribution to journalReview article

37 Citations (Scopus)
2011

Compact hollow-core photonic band gap resonator with optimised metallic cavity at microwave frequencies

Férachou, D., Humbert, G., Le Floch, J-M., Aubourg, M., Auguste, J-L., Tobar, M., Cros, D. & Blondy, J-M., 2011, In : Electronics Letters. 47, 14, p. 805 - 807

Research output: Contribution to journalArticle

6 Citations (Scopus)
2013
39 Citations (Scopus)
2011

Adapting a cryogenic sapphire oscillator for very long baseline interferometry

Doeleman, S., Tai, M., Rogers, A. E. E., Hartnett, J., Tobar, M. & Nand, N. R., 2011, In : Publications of the Astronomical Society of the Pacific. 123, 903, p. 582-595

Research output: Contribution to journalArticle

22 Citations (Scopus)
2019

Bulk Acoustic Wave Resonator-Oscillators and Tests of Fundamental Physics

Goryachev, M., Ivanov, E. N., Tobar, M. E. & Galliou, S., 2019, IFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings. IEEE, Institute of Electrical and Electronics Engineers, 8856114. (IFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings).

Research output: Chapter in Book/Conference paperConference paper

2011

Testing Lorentz invariance using an odd-parity asymmetric optical resonator

Baynes, F., Luiten, A. & Tobar, M., 2011, In : Physical Review D - Particles, Fields, Gravitation and Cosmology. 84, p. 5pp

Research output: Contribution to journalArticle

10 Citations (Scopus)
2013

Cryogenic resonant microwave cavity searches for hidden sector photons

Parker, S., Hartnett, J., Povey, R. G. & Tobar, M., 2013, In : Physical Review D - Particles, Fields, Gravitation and Cosmology. 88, 11, p. 5pp

Research output: Contribution to journalArticle

10 Citations (Scopus)
2011

Electromagnetic properties of polycrystalline diamond from 35 K to room temperature and microwave to terahertz frequencies

Floch, J-M., Bara, R., Hartnett, J., Tobar, M., Mouneyrac, D., Passerieux, D., Cros, D., Krupka, J., Goy, P. & Caroopen, S., 2011, In : Journal of Applied Physics. 109, 9, p. 6pp

Research output: Contribution to journalArticle

10 Citations (Scopus)
2015

Strong coupling between P1 diamond impurity centers and a three-dimensional lumped photonic microwave cavity

Creedon, D., Le Floch, J-M., Goryachev, M., Farr, W. G., Castelletto, S. & Tobar, M., 24 Apr 2015, In : Physical Review B - Condensed Matter and Materials Physics. 91, 14, 5 p., 140408.

Research output: Contribution to journalArticle

14 Citations (Scopus)
2011

Rotating Microwave Cryogenic Sapphire Oscillators for Tests of Lorentz Invariance

Parker, S., Stanwix, P., Tobar, M., Nagel, M., Hartnett, J., Ivanov, E. & Peters, A., 2011, Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim. Baldwin, K. (ed.). Sydney, Australia: OSA Publishing, p. 1167-1168 2 p.

Research output: Chapter in Book/Conference paperConference paper

2019

Experimental implementations of cavity-magnon systems: from ultra strong coupling to applications in precision measurement

Flower, G., Goryachev, M., Bourhill, E. & Tobar, M. E., 12 Sep 2019, In : New Journal of Physics. 21, 11 p., 095004.

Research output: Contribution to journalArticle

Open Access
2014

Jump chaotic behaviour of ultra low loss bulk acoustic wave cavities

Goryachev, M., Farr, W. G., Galliou, S. & Tobar, M., Aug 2014, In : Applied Physics Letters. 105, 6, 4 p., 063501.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
184 Downloads (Pure)
2015
5 Citations (Scopus)
2014

Observation of the fundamental Nyquist noise limit in an ultra-high Q-factor cryogenic bulk acoustic wave cavity

Goryachev, M., Ivanov, E., Van Kann, F., Galliou, S. & Tobar, M., 13 Oct 2014, In : Applied Physics Letters. 105, 15, p. 153505 1-5 5 p., 153505.

Research output: Contribution to journalArticle

9 Citations (Scopus)

Spin-photon interaction in a cavity with time-reversal symmetry breaking

Goryachev, M., Farr, W. G., Creedon, D. & Tobar, M., 11 Jun 2014, In : Physical Review B - Condensed Matter and Materials Physics. 89, 22, p. 224407-1 - 224407-7 7 p., 224407.

Research output: Contribution to journalArticle

Open Access
File
18 Citations (Scopus)
213 Downloads (Pure)