Strong coupling between whispering gallery modes and chromium ions in ruby

W.G. Farr, Maxim Goryachev, Daniel Creedon, Michael Tobar

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report the study of interactions between cavity photons and paramagnetic Cr3+ spins in a ruby (Cr3+:Al2O3) whispering gallery mode (WGM) resonator. Examining the system at microwave frequencies and millikelvin temperatures, spin-photon couplings up to 610 MHz or about 5% of photon energy are observed between the impurity spins and high quality factor (Q>105) WGM. Large tunability and spin-spin interaction allows operation in the strong coupling regime. The system exhibits behavior not predicted by the usual Tavis-Cummings model because of interactions within the two-level spin bath, and the existence of numerous photonic modes. © 2014 American Physical Society.
Original languageEnglish
Pages (from-to)054409
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number5
DOIs
Publication statusPublished - 2014

Fingerprint

Whispering gallery modes
Ruby
ruby
whispering gallery modes
Chromium
chromium
Photons
Ions
ions
Microwave frequencies
photons
Photonics
Resonators
spin temperature
Impurities
interactions
microwave frequencies
Q factors
baths
resonators

Cite this

@article{a7f3c26feb744ad98237472dc66b5426,
title = "Strong coupling between whispering gallery modes and chromium ions in ruby",
abstract = "We report the study of interactions between cavity photons and paramagnetic Cr3+ spins in a ruby (Cr3+:Al2O3) whispering gallery mode (WGM) resonator. Examining the system at microwave frequencies and millikelvin temperatures, spin-photon couplings up to 610 MHz or about 5{\%} of photon energy are observed between the impurity spins and high quality factor (Q>105) WGM. Large tunability and spin-spin interaction allows operation in the strong coupling regime. The system exhibits behavior not predicted by the usual Tavis-Cummings model because of interactions within the two-level spin bath, and the existence of numerous photonic modes. {\circledC} 2014 American Physical Society.",
author = "W.G. Farr and Maxim Goryachev and Daniel Creedon and Michael Tobar",
year = "2014",
doi = "10.1103/PhysRevB.90.054409",
language = "English",
volume = "90",
pages = "054409",
journal = "Physical Review B",
issn = "1098-0121",
publisher = "American Physical Society",
number = "5",

}

Strong coupling between whispering gallery modes and chromium ions in ruby. / Farr, W.G.; Goryachev, Maxim; Creedon, Daniel; Tobar, Michael.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 90, No. 5, 2014, p. 054409.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Strong coupling between whispering gallery modes and chromium ions in ruby

AU - Farr, W.G.

AU - Goryachev, Maxim

AU - Creedon, Daniel

AU - Tobar, Michael

PY - 2014

Y1 - 2014

N2 - We report the study of interactions between cavity photons and paramagnetic Cr3+ spins in a ruby (Cr3+:Al2O3) whispering gallery mode (WGM) resonator. Examining the system at microwave frequencies and millikelvin temperatures, spin-photon couplings up to 610 MHz or about 5% of photon energy are observed between the impurity spins and high quality factor (Q>105) WGM. Large tunability and spin-spin interaction allows operation in the strong coupling regime. The system exhibits behavior not predicted by the usual Tavis-Cummings model because of interactions within the two-level spin bath, and the existence of numerous photonic modes. © 2014 American Physical Society.

AB - We report the study of interactions between cavity photons and paramagnetic Cr3+ spins in a ruby (Cr3+:Al2O3) whispering gallery mode (WGM) resonator. Examining the system at microwave frequencies and millikelvin temperatures, spin-photon couplings up to 610 MHz or about 5% of photon energy are observed between the impurity spins and high quality factor (Q>105) WGM. Large tunability and spin-spin interaction allows operation in the strong coupling regime. The system exhibits behavior not predicted by the usual Tavis-Cummings model because of interactions within the two-level spin bath, and the existence of numerous photonic modes. © 2014 American Physical Society.

U2 - 10.1103/PhysRevB.90.054409

DO - 10.1103/PhysRevB.90.054409

M3 - Article

VL - 90

SP - 054409

JO - Physical Review B

JF - Physical Review B

SN - 1098-0121

IS - 5

ER -