The wave-particle duality of light was verified by multi and single photon interference both through Young’s double slit and Mach-Zehnder interferometer. In these two sets of experiments, the interference in the single photon level is the same as that at multi photons level with long enough exposure time. In the Mach-Zehnder interferometer, the “whichpath” information can be identified by measu...

We present exact analytical solutions to study the coherent interaction between a single photon and the mechanical motion of a membrane in quadratic optomechanics. We consider single-photon emission and scattering when the photon is initially inside the cavity and in the fields outside the cavity, respectively. Using our solutions, we calculate the single-photon emission and scattering spectra,...

Single photon sources are introduced as emitters which deliver one photon at one time. The necessity of developing single photon sources, related principles and the development of single photon sources are also discussed in this essay.

We propose a completely new concept [1,2] for a future lithography (see Fig. 1a) based on an array of single photon sources which has the potential to simultaneously decrease structure size and to greatly simplify nanostructure realization. Single photon sources can controllably produce a train of single photons with the appropriate energy needed for photochemical reactions in polymer systems c...

High-sensitivity detectors that are able to generate an electrical signal when struck by a single photon have two main applications. The first is for tasks involving very low light levels, such as fluorescence microscopy for biological imaging, free-space optical communications or laser ranging. The second is for singlephoton counters in quantum optics, which must often capture individual photo...

Dissipation-free photon-photon interactions at the single photon level is studied in the context of cavity electromagnetically induced transparency (EIT). For single atoms in the strong coupling regime exhibiting EIT, photon-photon interaction is bounded above by the single atom-photon coupling strength. Photon blockade and antibunching occur for both single and multi-atom cases. It is shown th...

Decision making is critical in our daily lives and for society in general and is finding evermore practical applications in information and communication technologies. Herein, we demonstrate experimentally that single photons can be used to make decisions in uncertain, dynamically changing environments. Using a nitrogen-vacancy in a nanodiamond as a single-photon source, we demonstrate the deci...