Protecting quantum entanglement from amplitude damping

Quantum entanglement is a critical resource for quantum information and quantum computation. However, entanglement of a quantum system is subjected to change due to the interaction with the environment. One typical result of the interaction is the amplitude damping that usually results in the reduction of the entanglement. Here we propose a protocol to protect quantum entanglement from the amplitude damping by applying Hadamard and CNOT gates. As opposed to some recently studied methods, the scheme presented here does not require weak measurement in the reversal process, leading to a faster recovery of entanglement. We propose a possible experimental implementation based on linear optical system

The Impact of In-Service Training on Burnout at the Institute of Public Administration

This study was conducted to assess the effects of training on burnout and job satisfaction by conducting pre- and post-tests of participants in various training programs provided by the Institute for Public Administration (IPA). This study used a Maslach Burnout Inventory (MBI) modified survey. The results suggested that the burnout levels among trainees after the professional in-service training program were not significantly different from the burnout level before the professional in-service training. At the organizational level, the findings supported a relationship between burnout and promotion, departmental and organizational tenure, age, and changing jobs and organizations. This study provided some valuable recommendations to both training and governmental organizations. Some of these recommendations are: establishing preventive burnout training programs, adopting a process for rotating employees and new methods v of promotion besides training and tenure as well as exploring matching between the satisfactions results to prevent burnout. Considering these recommendations will change the current findings of burnout related to other variables in this study. Overall, these recommendations will decrease the impact of burnout in relation to training, organizational characteristics

Advantages of nonclassical pointer states in postselected weak measurements

We investigate, within the weak measurement theory, the advantages of non-classical pointer states over semi-classical ones for coherent, squeezed vacuum, and Schr\"{o}inger cat states. These states are utilized as pointer state for the system operator $\hat{A}$ with property $\hat{A}^{2}=\hat{I}$, where $\hat{I}$ represents the identity operator. We calculate the ratio between the signal-to-noise ratio (SNR) of non-postselected and postselected weak measurements. The latter is used to find the quantum Fisher information for the above pointer states. The average shifts for those pointer states with arbitrary interaction strength are investigated in detail. One key result is that we find the postselected weak measurement scheme for non-classical pointer states to be superior to semi-classical ones. This can improve the precision of measurement process.Comment: 8 pages, 5 figure