Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Warrick G. Farr"'
Publikováno v:
Physical Review A. 92
We present evidence for collective action of Cr$^{3+}$ ion impurities in a highly doped ruby crystal at microwave frequencies. The cylindrical geometry of the crystal allows for the creation of a superradiant, or "spin-mode" doublet, with spatial str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68f97bb6e83ef25447a41ffaa6ea4c25
https://doi.org/10.1103/physreva.92.023805
https://doi.org/10.1103/physreva.92.023805
Autor:
Jean-Michel Le Floch, Daniel L. Creedon, Maxim Goryachev, Warrick G. Farr, Stefania Castelletto, Michael E. Tobar
Publikováno v:
Physical Review B. 91
We report strong coupling between an ensemble of N impurity (P1) centers in diamond and microwave photons using a unique double-post reentrant cavity. The cavity is designed so that the magnetic component of the cavity field is spatially separated fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::444272bc19d0a0c27c3002be6796ee9e
https://doi.org/10.1103/physrevb.91.140408
https://doi.org/10.1103/physrevb.91.140408
We demonstrate a previously unobserved nonlinear phenomenon in an ultra-low loss quartz Bulk Acoustic Wave cavity ($Q>3\times10^9$), which only occurs below 20 milli-Kelvin in temperature and under relatively weak pumping. The phenomenon reveals the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1af625b8291af9f9b0e7324cd798e642
http://arxiv.org/abs/1406.3880
http://arxiv.org/abs/1406.3880
Publikováno v:
Physical Review B. 89
Employing a sapphire whispering gallery mode resonator, we demonstrate features of the spin-photon interaction in cavities with broken time-reflection symmetry. The broken symmetry leads to a lifting of the degeneracy between left-handed and right-ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e62d93803a7d98a34f847388fbbd2a27
https://doi.org/10.1103/physrevb.89.224407
https://doi.org/10.1103/physrevb.89.224407
Autor:
Daniel L. Creedon, Mikhail Kostylev, Maxim Goryachev, Michael E. Tobar, Yaohui Fan, Warrick G. Farr
Using a sub-millimetre sized YIG (Yttrium Iron Garnet) sphere mounted in a magnetic field-focusing cavity, we demonstrate an ultra-high cooperativity of $10^5$ between magnon and photon modes at millikelvin temperatures and microwave frequencies. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::321ba322fc97b7f9f01cc948df43e159
Publikováno v:
ResearcherID
We report the study of interactions between cavity photons and paramagnetic ${\mathrm{Cr}}^{3+}$ spins in a ruby ${(\mathrm{Cr}}^{3+}:{\mathrm{Al}}_{2}{\mathrm{O}}_{3})$ whispering gallery mode (WGM) resonator. Examining the system at microwave frequ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03d1db22cfbe1f97af115b009daaab10
Publikováno v:
Physical Review B. 88
Progress in the emerging field of engineered quantum systems requires the development of devices that can act as quantum memories. The realization of such devices by doping solid-state cavities with paramagnetic ions imposes a tradeoff between ion co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5000d30deb71dec9336c6c46a800904
https://doi.org/10.1103/physrevb.88.224426
https://doi.org/10.1103/physrevb.88.224426
A combination of electron spin interactions in a magnetic field allows us to control the resonance frequencies of a high-Q Whispering Gallery (WG) cavity mode doublet, resulting in precise measurements of an avoided crossing between the two modes com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99d62ea5d69cbaf1eb874226fc044f87
http://arxiv.org/abs/1312.6739
http://arxiv.org/abs/1312.6739
Publikováno v:
SPIE Proceedings.
Progress in the emerging field of engineered quantum systems requires the development of devices that can act as quantum memories. The realisation of such devices by doping solid state cavities with paramagnetic ions imposes a trade-off between ion c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74d6573a8abfdb0236cda7042817bb60
https://doi.org/10.1117/12.2033898
https://doi.org/10.1117/12.2033898
Autor:
Jeremy Bourhill, Warrick G. Farr, Maxim Goryachev, Daniel L. Creedon, Karim Benmessai, Michael E. Tobar
Publikováno v:
Physical Review B. 88
We report the observation of a mechanism of maser generation in an ensemble of inter-coupled, inhomogeneously broadened two-level systems, enhanced by high quality factor electromagnetic cavity modes. In this previously unobserved form of population
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::688f830972ec38491795e198da38f1a8
https://doi.org/10.1103/physrevb.88.235104
https://doi.org/10.1103/physrevb.88.235104