Quantum Computing and Information Extraction for Dynamical Quantum Systems

Quantum Computing and Dynamical Quantum Models

A dynamical quantum model assigns an eigenstate to a specified observable even when no measurement is made, and gives a stochastic evolution rule for that eigenstate. Such a model yields a distribution over classical histories of a quantum state. We study what can be computed by sampling from that distribution, i.e., by examining an observer’s entire history. We show that, relative to an oracle...

Robust dynamical decoupling for quantum computing and quantum memory.

Dynamical decoupling (DD) is a popular technique for protecting qubits from the environment. However, unless special care is taken, experimental errors in the control pulses used in this technique can destroy the quantum information instead of preserving it. Here, we investigate techniques for making DD sequences robust against different types of experimental errors while retaining good decoupl...

Quantum Dynamical Systems

Designing a quantum genetic controller for tracking the path of quantum systems

Based on learning control methods and computational intelligence, control of quantum systems is an attractive field of study in control engineering. What is important is to establish control approach ensuring that the control process converges to achieve a given control objective and at the same time it is simple and clear. In this paper, a learning control method based on genetic quantum contr...

Quantum Computing and Information Security

Quantum computing, if realized on a large and commercial scale, will provide significantly more powerful computers that could threaten global information security. Modern methods for encrypting data could become obsolete as quantum computing methods break methods used now by more traditional computing techniques. Commercial machines that make use of quantum algorithms to reduce problem sizes of...