Minimal-excitation states for electron quantum optics using levitons

Levitons for electron quantum optics

Minimal Uncertainty States for Quantum Groups

The problem of how to obtain quasi-classical states for quantum groups is examined. A measure of quantum indeterminacy is proposed, which involves expectation values of some natural quantum group operators. It is shown that within any finite dimensional irreducible representation, the highest weight vector and those unitarily related to it are the quasi-classical states. Quantum groups [1] have...

Quantum Electron Optics and Its Applications

Theory of dressed states in quantum optics

The dual Dyson series [M.Frasca, Phys. Rev. A 58, 3439 (1998)], is used to develop a general perturbative method for the study of atom-field interaction in quantum optics. In fact, both Dyson series and its dual, through renormalization group methods to remove secular terms from the perturbation series, give the opportunity of a full study of the solution of the Schrödinger equation in differen...

Quantum Computing using Linear Optics

uantum computers are expected to be able to solve mathematical problems that cannot be solved using conventional computers. Many of these problems are of practical importance, especially in the areas of cryptography and secure communications. APL is developing an optical approach to quantum computing in which the bits, or “qubits,” are represented by single photons. Our approach allows the use ...