24 citations · 45 across the 2 of their papers we have counts for
4 papers
The Significance of the -Numerical Range and the Local -Numerical Range in Quantum Control and Quantum Information
Thomas Schulte-Herbrueggen, Gunther Dirr, Uwe Helmke +1
This paper shows how C-numerical-range related new strucures may arise from practical problems in quantum control--and vice versa, how an understanding of these structures helps to…
Relative "-Numerical Ranges for Applications in Quantum Control and Quantum Information
G. Dirr, U. Helmke, M. Kleinsteuber +1
Motivated by applications in quantum information and quantum control, a new type of "-numerical range, the relative "-numerical range denoted , is introduced. It ar…
Optimal Control of Coupled Josephson Qubits
A. K. Spoerl, T. Schulte-Herbrueggen, S. J. Glaser +4
Quantum optimal control theory is applied to two and three coupled Josephson charge qubits. It is shown that by using shaped pulses a CNOT gate can be obtained with a trace fidelit…
Optimal Control-Based Efficient Synthesis of Building Blocks of Quantum Algorithms Seen in Perspective from Network Complexity towards Time Complexity
T. Schulte-Herbrueggen, A. K. Spoerl, N. Khaneja +1
In this paper, we demonstrate that optimal control algorithms can be used to speed up the implementation of modules of quantum algorithms or quantum simulations in networks of coup…