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Author

  • Michael Tobar
Review article

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 others, Frajuca, 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)
Letter

Low-Loss Dielectric Material Characterization and High-Q Resonator Design from Microwave to Millimetre Waves Frequencies

Le Floch, J-M., Tobar, M., Humbert, G., Mouneyrac, D., Férachou, D., Bara, R., Aubourg, M., Hartnett, J., Cros, D., Blondy, J-M. & Krupka, J., 2011, In : Journal of Physical Science and Application. 1, 1, p. 15-28

Research output: Contribution to journalLetter

Editorial

Cryogenic optomechanics and the resurgence of the resonant-mass gravitational wave detector

Tobar, M. E., 13 Sep 2017, In : New Journal of Physics. 19, 2 p., 091001.

Research output: Contribution to journalEditorial

Open Access
Conference paper

An ultra-stable microwave transfer technique for the ACES and future space missions

Altman, N., Schediwy, S., McFerran, J., Tobar, M. & Luiten, A., May 2014, Proceedings of the 13th Australian Space Science Conference . Short, W. & Cairns, I. (eds.). Sydney: National Space Society of Australia Ltd., p. 161-170

Research output: Chapter in Book/Conference paperConference paper

2 Downloads (Pure)

Behavior of quartz crystal resonators at liquid helium temperature

Galliou, S., Abbé, P., Goryachev, M., Ivanov, E. N., Tobar, M. E. & Bourquin, R., 2016, 2016 European Frequency and Time Forum. Everard, J. (ed.). IEEE, Institute of Electrical and Electronics Engineers

Research output: Chapter in Book/Conference paperConference paper

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

Bulk acoustic wave resonator thermal noise measurements

Goryachev, M., Ivanov, E., Parker, S., Winterflood, J., Tobar, M. & Galliou, S., 2014, 2014 IEEE International Frequency Control Symposium Proceedings. Piscataway, NJ, USA: IEEE, Institute of Electrical and Electronics Engineers, Vol. 1. p. 50-52

Research output: Chapter in Book/Conference paperConference paper

Cavity constraints on isotropic shift and anisotropies of the speed of light

Stanwix, P. L., Parker, S. R., Tobar, M. E., Hohensee, M. A. A., Phillips, D. F. F. & Walsworth, R. L. L., 2011, Proceedings of the 5th Meeting on CPT and Lorentz Symmetry, (CPT 10) 2010. Kostelecky, V. A. (ed.). Bloomington, IN; United States: World Scientific Publishing, Vol. 1. p. 133-137 5 p.

Research output: Chapter in Book/Conference paperConference paper

Current limitations of cryogenic microwave oscillator frequency stability

Parker, S., Ivanov, E., Tobar, M. & Hartnett, J. G., 2014, IFCS 2014 - 2014 IEEE International Frequency Control Symposium, Proceedings.

Research output: Chapter in Book/Conference paperConference paper

Extremely high Q-factor mechanical modes in quartz bulk acoustic wave resonators at millikelvin temperature

Goryachev, M., Creedon, D., Ivanov, E., Galliou, S., Bourquin, R. & Tobar, M., 2014, Eleventh International Conference on Quantum Communication, Measurement and Computation (QCMC). Vol. 1633. p. 90-92

Research output: Chapter in Book/Conference paperConference paper

First search for axions of mass 110 μeV using milliKelvin cooled 26.6 GHz microwave resonator

McAlister, B., Kruger, J., Flower, G., Bourhill, J., Goryachev, M., Parker, S., Ivanov, E. & Tobar, M., 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. 179-180 2 p. 8088839

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

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

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

Improvements to data analysis and design of a rotating Michelson-Morley experiment using cryogenic sapphire microwave oscillators

Parker, S. R., Tobar, M. E. & Stanwix, P. L., 2011, Proceedings of the 5th Meeting on CPT and Lorentz Symmetry. Kostelecky, V. A. (ed.). Bloomington, IN: World Scientific Publishing, p. 279-282 4 p.

Research output: Chapter in Book/Conference paperConference paper

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

Isotopically Pure Silcon-28 Whispering Gallery Mode Resonators: A Host for Narrow Linewidth Spin Ensembles

Tobar, M. E., Bourhill, J., Goryachev, M., Creedon, D., Johnson, B. C. & Jamieson, D., 14 May 2019, 2018 Conference on Optoelectronic and Microelectronic Materials and Devices, COMMAD 2018. IEEE, Institute of Electrical and Electronics Engineers, p. 41-42 2 p. 8715244. (2018 Conference on Optoelectronic and Microelectronic Materials and Devices, COMMAD 2018).

Research output: Chapter in Book/Conference paperConference paper

Novel Resonators for Axion Haloscopes

McAllister, B. T., Goryachev, M. & 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. 53-59 7 p.

Research output: Chapter in Book/Conference paperConference paper

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

Precision noise measurements and oscillator frequency stabilization

Ivanov, E. & Tobar, M., 2011, Proceedings 2011 XXXth URSI General Assembly and Scientific Symposium. United States: IEEE, Institute of Electrical and Electronics Engineers, Vol. 1. p. 4pp

Research output: Chapter in Book/Conference paperConference paper

Properties related to Q-factors and noise of quartz resonator-based systems at 4K

Galliou, S., Abbe, P., Bourquin, R., Goryachev, M., Tobar, M. & Ivanov, E., 2014, 2014 European Frequency and Time Forum, EFTF 2014. Switzerland: European Frequency and Time Forum (EFTF), p. 33-35

Research output: Chapter in Book/Conference paperConference paper

2 Citations (Scopus)

Quality factors of quartz crystal resonators operating at 4 Kelvins

Galliou, S., Abbe, P., Goryachev, M., Tobar, M. & Bourquin, R., 2015, 2015 Joint Conference of the IEEE International Frequency Control Symposium and the European Frequency and Time Forum, FCS 2015 - Proceedings. Denver, CO, USA: IEEE, Institute of Electrical and Electronics Engineers, Vol. N/A. p. 728-732

Research output: Chapter in Book/Conference paperConference paper

1 Citation (Scopus)

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

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

Study of Fe 3+-sapphire maser above 4K

Benmessai, K., Mrad, M., Creedon, D., Le Floch, J-M., Tobar, M., Bourgeois, P-Y., Kersale, Y. & Giordano, V., 2011, IEEE International Frequency Control Symposium & Exposition. Proceedings. United States: IEEE, Institute of Electrical and Electronics Engineers, Vol. n/a. p. n/a

Research output: Chapter in Book/Conference paperConference paper

1 Citation (Scopus)

Sub-Doppler cooling with the 1S0-1P 1 line in ytterbium

Kostylev, N., Ivanov, E., Tobar, M. & Mcferran, J., 2014, 2014 IEEE International Frequency Control Symposium Proceedings. Piscataway, NJ, USA: IEEE, Institute of Electrical and Electronics Engineers, Vol. 1. p. 218-221

Research output: Chapter in Book/Conference paperConference paper

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

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)

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

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

Towards Cryogenic Quartz Oscillators: Coupling of a Bulk Acoustic Wave quartz resonator to a SQUID

Goryachev, M., Ivanov, E. N., Tobar, M. E. & Galliou, S., 2016, 2016 IEEE International Frequency Control Symposium. Maleki, L. & Partridge, A. (eds.). IEEE, Institute of Electrical and Electronics Engineers, 7563583

Research output: Chapter in Book/Conference paperConference paper

Ultra-sensitive Whispering Gallery Mode spectroscopy of low loss crystals at cryogenic temperatures

Goryachev, M., Farr, W. G., Carvalho, N. C., Creedon, D., Lefloch, J-M., Benmessaï, K., Tobar, M. & Bushev, P. A., 2014, 2014 IEEE International Frequency Control Symposium Proceedings. Piscataway, NJ, USA: IEEE, Institute of Electrical and Electronics Engineers, Vol. 1. p. 1-3

Research output: Chapter in Book/Conference paperConference paper

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

Comment/debate

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

Article

3D lumped LC resonators as low mass axion haloscopes

Mcallister, B., Parker, S. & Tobar, M., 11 Aug 2016, In : Physical Review D - Particles, Fields, Gravitation and Cosmology. 94, 4, p. 042001-1 - 042001-6

Research output: Contribution to journalArticle

Open Access
File
13 Citations (Scopus)
318 Downloads (Pure)

A 3D printed superconducting aluminium microwave cavity

Creedon, D. L., Goryachev, M., Kostylev, N., Sercombe, T. & Tobar, M., 2016, In : Applied Physics Letters. 109, 3, p. 032601-1 - 032601-4 032601.

Research output: Contribution to journalArticle

9 Citations (Scopus)

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
20 Citations (Scopus)

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

24 Citations (Scopus)

Addressing a single spin in diamond with a macroscopic dielectric microwave cavity

Le Floch, J-M., Bradac, C., Nand, N. R., Castelletto, S. A., Tobar, M. & Volz, T., 29 Sep 2014, In : Applied Physics Letters. 105, 13, 3 p., 133101.

Research output: Contribution to journalArticle

Open Access
8 Citations (Scopus)
3 Citations (Scopus)

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)

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

Galliou, S., Deléglise, S., Goryachev, M., Neuhaus, L., Cagnoli, G., Zerkani, S., Dolique, V., Bon, J., Vacheret, X., Abbé, P., Pinard, L., Michel, C., Karassouloff, T., Briant, T., Cohadon, P. F., Heidmann, A., Tobar, M. E. & Bourquin, R., 1 Dec 2016, In : Review of Scientific Instruments. 87, 12, 123906.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
298 Downloads (Pure)

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)

A Simple Dual-Band Electromagnetic Band Gap Resonator Antenna Based on Inverted Reflection Phase Gradient

Zeb, B. A., Ge, Y., Esselle, K. P., Sun, Z. & Tobar, M., 2012, In : IEEE Transactions on Antennas and Propagation. 60, 10, p. 4522-4529

Research output: Contribution to journalArticle

57 Citations (Scopus)

Axion Dark Matter Coupling to Resonant Photons via Magnetic Field

Mcallister, B., Parker, S. & Tobar, M., 21 Apr 2016, In : Physical Review Letters. 116, 16, p. 161804-1-161804-5 161804.

Research output: Contribution to journalArticle

Open Access
File
21 Citations (Scopus)
347 Downloads (Pure)
13 Citations (Scopus)

Axion detection with precision frequency metrology

Goryachev, M., McAllister, B. T. & Tobar, M. E., 1 Dec 2019, In : Physics Of The Dark Universe. 26, 100345.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Better than Brillouin

Bourhill, J. & Tobar, M., Jun 2018, In : Nature Physics. 14, 6, p. 531-532 2 p.

Research output: Contribution to journalArticle

Bounds on higher-order Lorentz-violating photon sector coefficients from an asymmetric optical ring resonator experiment

Parker, S., Mewes, M., Baynes, F. & Tobar, M., 30 Oct 2015, In : Physics Letters A. 379, 42, p. 2681-2684 4 p.

Research output: Contribution to journalArticle

Open Access
File
4 Citations (Scopus)
203 Downloads (Pure)