ua nt - p h / 02 04 04 8 v 1 9 A pr 2 00 2 1 General realization of N = 4 supersymmetric quantum mechanics and its applications

ar X iv : q ua nt - p h / 02 04 05 9 v 1 1 1 A pr 2 00 2 Optical qubit generation by state truncation using an experimentally feasible scheme

Generation of arbitrary superposition of vacuum and one-photon states using quantum scissors device (QSD) is studied. The device allows the preparation of states by truncating an input coherent light. Optimum values of the intensity of the coherent light for the generation of any desired state using the experimentally feasible QSD scheme are found.

ua nt - p h / 01 04 04 3 v 1 9 A pr 2 00 1 Moller operators and Lippmann - Schwinger equations for step - like potentials

The Moller operators and the asociated Lippman-Schwinger equations obtained from different partitionings of the Hamiltonian for a step-like potential barrier are worked out, compared and related.

ar X iv : q ua nt - p h / 04 11 17 2 v 1 2 3 N ov 2 00 4 Information and Entropy in Quantum Theory

ar X iv : q ua nt - p h / 02 03 04 6 v 1 1 1 M ar 2 00 2 Quantum imaging

We provide a brief overview of the newly born field of quantum imaging, and discuss some concepts that lie at the root of this field.

ua nt - p h / 99 11 04 8 v 1 1 1 N ov 1 99 9 Motion of a spin 1 2 particle in shape invariant scalar and magnetic fields

We study the motion of a spin 1 2 particle in a scalar as well as a magnetic field within the framework of supersymmetric quantum mechanics(SUSYQM). We also introduce the concept of shape invariant scalar and magnetic fields and it is shown that the problem admits exact analytical solutions when such fields are considered.