3 research outputs found
Visualizing Entanglement in multi-Qubit Systems
In the field of quantum information science and technology, the
representation and visualization of quantum states and related processes are
essential for both research and education. In this context, a focus especially
lies on ensembles of few qubits. There exist many powerful representations for
single-qubit and multi-qubit systems, such as the famous Bloch sphere and
generalizations. Here, we utilize the dimensional circle notation as a
representation of such ensembles, adapting the so-called circle notation of
qubits and the idea of representing the n-particle system in an n-dimensional
space. We show that the mathematical conditions for separability lead to
symmetry conditions of the quantum state visualized, offering a new perspective
on entanglement in few-qubit systems and therefore on various quantum
algorithms. In this way, dimensional notations promise significant potential
for conveying nontrivial quantum entanglement properties and processes in
few-qubit systems to a broader audience, and could enhance understanding of
these concepts as a bridge between intuitive quantum insight and formal
mathematical descriptions.Comment: 22 pages, 20 figure
Electrochromic graduated filters with symmetric electrode configuration
Graduated optical filters are commonly used for spatial image control as they are capable of darkening the overexposed parts of the image specifically. However, they lack flexibility because each filter has a fixed transmission distribution. We herein present a fully controllable graduated filter based on the electrochromic device. Its graduated transmission distribution can be spatially controlled by the application of multiple electric potentials. In this way, the control of the gradient’s position and its width, transmission and angular orientation is possible. Simulation of both the spatial potential distribution and the resultant optical absorption distribution are conducted to optimize the electrode configuration and furthermore to derive a control dataset that facilitates the adjustment and thus the application of the graduated filter. Based on three objective and quantitative criteria, we identify the electrode configuration with the highest flexibility in all four controls, manufacture the device using a gravure printing process for the nanoparticle electrodes and show its successful application
Electrochromic graduated filters with symmetric electrode configuration
Graduated optical filters are commonly used for spatial image control as they are capable of darkening the overexposed parts of the image specifically. However, they lack flexibility because each filter has a fixed transmission distribution. We herein present a fully controllable graduated filter based on the electrochromic device. Its graduated transmission distribution can be spatially controlled by the application of multiple electric potentials. In this way, the control of the gradient’s position and its width, transmission and angular orientation is possible. Simulation of both the spatial potential distribution and the resultant optical absorption distribution are conducted to optimize the electrode configuration and furthermore to derive a control dataset that facilitates the adjustment and thus the application of the graduated filter. Based on three objective and quantitative criteria, we identify the electrode configuration with the highest flexibility in all four controls, manufacture the device using a gravure printing process for the nanoparticle electrodes and show its successful application