The flexibility and high information capacity of entangled states has been so far demonstrated in several areas of quantum communication and quantum computing. We developed recently several new techniques for precise optical measurement in optical life sciences, telecommunication, and nanotechnology. They take advantage of quantum entanglement and usually exceed traditional optical approaches both in resolution and in the amount of obtained information about the system under evaluation.
The even-order dispersion cancellation effect provided superior accuracy in quantum optical coherence tomography by eliminating dispersive broadening of low-coherence interference pattern. We recently designed novel type of quantum interferometer allowing observation of both even- and odd-order spectral dispersion cancellation effects in a single experiment. The precise evaluation of polarization mode dispersion in telecommunication routers and characterization of dispersion-engineered nanodevices such as bandgap structures could benefit from the unusual possibility of independently evaluating even- and odd-order dispersion coefficients.
A spatial counterpart of the dispersion cancellation effect that leads to the removal of even-order aberrations has been recently demonstrated. This correlated imaging approach could enhance the resolution of optical imaging and microscopy in biomedical applications by eliminating detrimental effects of aberration.