Physics – Quantum Physics
Scientific paper
2004-10-27
Physics
Quantum Physics
11 pages, 10 figures
Scientific paper
10.1103/PhysRevA.71.013817
We investigate the suitability of toroidal microcavities for strong-coupling cavity quantum electrodynamics (QED). Numerical modeling of the optical modes demonstrate a significant reduction of modal volume with respect to the whispering gallery modes of dielectric spheres, while retaining the high quality factors representative of spherical cavities. The extra degree of freedom of toroid microcavities can be used to achieve improved cavity QED characteristics. Numerical results for atom-cavity coupling strength, critical atom number N_0 and critical photon number n_0 for cesium are calculated and shown to exceed values currently possible using Fabry-Perot cavities. Modeling predicts coupling rates g/(2*pi) exceeding 700 MHz and critical atom numbers approaching 10^{-7} in optimized structures. Furthermore, preliminary experimental measurements of toroidal cavities at a wavelength of 852 nm indicate that quality factors in excess of 100 million can be obtained in a 50 micron principal diameter cavity, which would result in strong coupling values of (g/(2*pi),n_0,N_0)=(86 MHz,4.6*10^{-4},1.0*10^{-3}).
Goh K. W.
Kimble Jeff H.
Kippenberg Tobias J.
Spillane Sean M.
Vahala Kerry J.
No associations
LandOfFree
Ultra-high-Q toroidal microresonators for cavity quantum electrodynamics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Ultra-high-Q toroidal microresonators for cavity quantum electrodynamics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultra-high-Q toroidal microresonators for cavity quantum electrodynamics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-342788