Novel method for manipulating single atoms and photons in a cavity on an optical nanofiber

2014 Fiscal Year Final Research Report

• Project/Area Number: 25800226
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: The University of Electro-Communications
• Principal Investigator: SADGROVE Mark 電気通信大学, その他部局等, 助教 (40625000)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: ナノ導波路 / フォトニック結晶

Outline of Final Research Achievements

In this research program, the applicant developed a completely new method of achieving "photonic crystal cavities" on a nano-waveguide. The method combined a nano-fabricated silica grating containing a central "defect" with an optical "nanofiber" (sub-wavelength diameter optical fiber). By mounting the grating on the optical nanofiber, we achieved a small mode-volume cavity for light guided inside the nanofiber. When quantum emitters are placed on the nanofiber surface, the experience a strong enhancement of spontaneous emission at the cavity resonance wavelength, making the device promising technology for the realization of narrow-band, fiber coupled single photon sources.

Before manufacturing the device, we designed the grating using computer simulations. Finally, we realized cavity QED based enhancement for a quantum dot deposited on the nanofiber surface by using the composite photonic crystal cavity technique.

Free Research Field

量子エレクトロニクス