Two-Photon Interference from the Far-Field Emission of Chip-Integrated Cavity-Coupled Emitters
| Autor: | Je-Hyung Kim, Richard P. Leavitt, Christopher J. K. Richardson, Edo Waks |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics::Optics
Quantum simulator Bioengineering 02 engineering and technology 01 natural sciences Optics Interference (communication) 0103 physical sciences General Materials Science 010306 general physics Quantum information science Photonic crystal Physics business.industry Mechanical Engineering Linear optical quantum computing General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Chip Quantum dot Physics::Accelerator Physics Optoelectronics Photonics 0210 nano-technology business |
| Zdroj: | Nano Letters. 16:7061-7066 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | Interactions between solid-state quantum emitters and cavities are important for a broad range of applications in quantum communication, linear optical quantum computing, nonlinear photonics, and photonic quantum simulation. These applications often require combining many devices on a single chip with identical emission wavelengths in order to generate two-photon interference, the primary mechanism for achieving effective photon-photon interactions. Such integration remains extremely challenging due to inhomogeneous broadening and fabrication errors that randomize the resonant frequencies of both the emitters and cavities. In this Letter, we demonstrate two-photon interference from independent cavity-coupled emitters on the same chip, providing a potential solution to this long-standing problem. We overcome spectral mismatch between different cavities due to fabrication errors by depositing and locally evaporating a thin layer of condensed nitrogen. We integrate optical heaters to tune individual dots within each cavity to the same resonance with better than 3 μeV of precision. Combining these tuning methods, we demonstrate two-photon interference between two devices spaced by less than 15 μm on the same chip with a postselected visibility of 33%, which is limited by timing resolution of the detectors and background. These results pave the way to integrate multiple quantum light sources on the same chip to develop quantum photonic devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|