Recent research has uncovered a remarkable ability to manipulate and control electromagnetic fields to produce effects such as perfect imaging and spatial cloaking. To achieve spatial cloaking, the index of refraction is manipulated to flow light from a probe around an object in such a way that a 'hole' in space is created, and the object remains hidden.… (More)
We observe strong modal coupling between the TE00 and TM00 modes in Si3N4 ring resonators revealed by avoided crossings of the corresponding resonances. Such couplings result in significant shifts of the resonance frequencies over a wide range around the crossing points. This leads to an effective dispersion that is one order of magnitude larger than the… (More)
In order to achieve efficient parametric frequency comb generation in microresonators, external control of coupling between the cavity and the bus waveguide is necessary. However, for passive monolithically integrated structures, the coupling gap is fixed and cannot be externally controlled, making tuning the coupling inherently challenging. We design a… (More)
We demonstrate a degenerate parametric oscillator in a silicon nitride microresonator. We use two frequency-detuned pump waves to perform parametric four-wave mixing and operate in the normal group-velocity dispersion regime to produce signal and idler fields that are frequency degenerate. Our theoretical modeling shows that this regime enables generation… (More)
By varying the width of an exciting pump pulse, very efficient generation of photon pairs, ranging from anti-correlated to nearly unentangled, is possible in existing silicon nitride microring resonators.
New engineered materials have critical applications in different fields in medicine, engineering and technology but their enhanced mechanical performances are significantly affected by the microstructural design and the sintering process used in their manufacture. This work introduces (i) a methodology for the calculation of the full deflection profile from… (More)
We report the first demonstration of all-optical continuously tunable delay imparted on single photons using a frequency conversion-dispersion technique. Delays tunable over 23 times the photon duration are demonstrated with on/off efficiency of 20-55%.
We demonstrate a photonic Ramsey interferometer using four-wave mixing in which the photon energies are analogous to atomic/molecular levels. This technique is highly promising for frequency-based quantum key distribution.
We propose and implement an application of existing robot learning algorithms to create a robotic sentry: the robot can gauge the hostility of an intruder and make intelligent decisions to aim and shoot. Using existing machine learning algorithms and stochastic modeling we create ROS code to be utilized on a physical PR2 robot. II. INTRODUCTION The goal of… (More)