Quantum electrodynamics in a whispering-gallery microcavity coated with a polymer nanolayer

Journal Article · Sat May 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.053807· OSTI ID:21413376

Yunfeng, Xiao; Lixin, Xiao; Yan, Li; Qihuang, Gong ^[1]; Changling, Zou; Chunhua, Dong; Zhengfu, Han ^[2]; Peng, Xue ^[3]

---

1. State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 (China)
2. Key Lab of Quantum Information, CAS, University of Science and Technology of China, Hefei 230026 (China)
3. Department of Physics, Southeast University, Nanjing 211189 (China)

Quasi-transverse-electric and -transverse-magnetic fundamental whispering gallery modes in a polymer-coated silica microtoroid are theoretically investigated and demonstrated to possess very high-quality factors. The existence of a nanometer-thickness layer not only evidently reduces the cavity mode volume but also draws the maximal electric field's position of the mode to the outside of the silica toroid, where single quantum dots or nanocrystals are located. Both effects result in a strongly enhanced coherent interaction between a single dipole (for example, a single defect center in a diamond crystal) and the quantized cavity mode. Since the coated microtoroid is highly feasible and robust in experiments, it may offer an excellent platform to study strong-coupling cavity quantum electrodynamics, quantum information, and quantum computation.

• OSTI ID: 21413376
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON
COMPUTERS
DIAMONDS
DIMENSIONLESS NUMBERS
DIPOLES
ELECTRODYNAMICS
ELEMENTS
FIELD THEORIES
INFORMATION
MINERALS
MULTIPOLES
NANOSTRUCTURES
NONMETALS
OXIDE MINERALS
POLYMERS
QUALITY FACTOR
QUANTUM COMPUTERS
QUANTUM DOTS
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
QUANTUM INFORMATION
SILICA