Engineering of Nano Cavities for Quantum Light Sources

Matthew T. Rakher

Hiroshi Kumagai, Yuichi Asakawa, Katsumi Midorikawa +1 more

We have developed an all-solid-state 252nm coherent light source for laser cooling of silicon atoms with tow-stage highly efficient frequency conversions with external cavities. With the coherent light source, it is possible to manipulate the atomic motion of the silicon atoms towards nano-process applications. In this paper, deflection, collimation, and axial velocity selection of the silicon atomic beam with the coherent light source are discussed.

Martin Arentoft Jacobsen

Liang Zhu, Ying Wu, Jiahua Li

Cavity optomagnonics has received considerable research interest in recent years, due to the coherent magnetic Brillioun light scattering in the ferromagnetic material. Here, we theoretically propose and numerically verify a feasible scheme for the full polarization tomography on photon statistics in an optomagnonic whispering-gallery-mode microresonator system in the weak-coupling regime. By performing the polarization pre- and post-selections to manipulate the polarization states of the input and output photons, we find that the rich sub- and super-Poissonian photon statistics can be selectively generated, thanks to quantum interferences. In the parameter space of phase delay, the evolution from photon bunching to antibunching indicates the change from phase to amplitude squeezing. Our obtained result has potential applications in tunable quantum polarized light sources based on the cavity optomagnonic platform in micro-nano scale. It also offers a deeper understanding for full quantum cavity optomagnonics.

Violetta Sharoglazova, Marius Puplauskis, Carl Ulrich Mattschas +3 more

Shivani Sharma, Vivek Venkataraman, Joyee Ghosh

We theoretically demonstrate the generation of spectrally pure (purity ~ 95%) heralded single photons, and also broadband (~60-nm around 1550-nm) polarization-entangled photon pairs (concurrence>0.96), at telecom wavelengths via extensive dispersion engineering in silicon nano-waveguides.