213 citations · 1.3k across the 40 of their papers we have counts for
7 papers · 2 filters
Optimal control theory for a unitary operation under dissipative evolution
Michael H. Goerz, Daniel M. Reich, Christiane P. Koch
We show that optimizing a quantum gate for an open quantum system requires the time evolution of only three states irrespective of the dimension of Hilbert space. This represents a…
Steering the optimization pathway in the control landscape using constraints
José P. Palao, Daniel M. Reich, Christiane P. Koch
We show how additional constraints, restricting the spectrum of the optimized pulse or confining the system dynamics, can be used to steer optimization in quantum control towards d…
Optimal quantum control of Bose-Einstein condensates in magnetic microtraps: Consideration of filter effects
Georg Jäger, Ulrich Hohenester
We theoretically investigate protocols based on optimal control theory (OCT) for manipulating Bose-Einstein condensates in magnetic microtraps, using the framework of the Gross-Pit…
Cooling molecular vibrations with shaped laser pulses: Optimal control theory exploiting the timescale separation between coherent excitation and spontaneous emission
Daniel M. Reich, Christiane P. Koch
Laser cooling of molecules employing broadband optical pumping involves a timescale separation between laser excitation and spontaneous emission. Here, we optimize the optical pump…
Optimal control under spectral constraints: Enforcing multi-photon absorption pathways
Daniel M. Reich, José P. Palao, Christiane P. Koch
Shaped pulses obtained by optimal control theory often possess unphysically broad spectra. In principle, the spectral width of a pulse can be restricted by an additional constraint…
Optimal strategies for estimating the average fidelity of quantum gates
Daniel M. Reich, Giulia Gualdi, Christiane P. Koch
We show that the minimum experimental effort to characterize the proper functioning of a quantum device scales as 2^n for n qubits and requires classical computational resources ~…
Minimum number of input states required for quantum gate characterization
Daniel M. Reich, Giulia Gualdi, Christiane P. Koch
We derive an algebraic framework which identifies the minimal information required to assess how well a quantum device implements a desired quantum operation. Our approach is based…