35 citations · 63 across the 2 of their papers we have counts for
4 papers · 1 filter
Elliptic functions and efficient control of Ising spin chains with unequal couplings
H. Yuan, R. Zeier, N. Khaneja
In this article, we study optimal control of dynamics in a linear chain of three spin 1/2, weakly coupled with unequal Ising couplings. We address the problem of time-optimal synth…
Time-optimal synthesis of unitary transformations in coupled fast and slow qubit system
Robert Zeier, Haidong Yuan, Navin Khaneja
In this paper, we study time-optimal control problems related to system of two coupled qubits where the time scales involved in performing unitary transformations on each qubit are…
Gate simulation and lower bounds on the simulation time
Robert Zeier, Markus Grassl, Thomas Beth
Unitary operations are the building blocks of quantum programs. Our task is to design effcient or optimal implementations of these unitary operations by employing the intrinsic phy…
The thermodynamic cost of reliability and low temperatures: Tightening Landauer's principle and the Second Law
Dominik Janzing, Pawel Wocjan, Robert Zeier +2
Landauer's principle states that the erasure of one bit of information requires the free energy kT ln 2. We argue that the reliability of the bit erasure process is bounded by the…