Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Schirmer, Sophie"'
Control of quantum systems via time-varying external fields optimized to maximize a fidelity measure at a given time is a mainstay in modern quantum control. However, save for specific systems, current analysis techniques for such quantum controllers
Externí odkaz:
http://arxiv.org/abs/2310.17094
Autor:
Jonckheere, Edmond, Schirmer, Sophie G., Langbein, Frank C., Weidner, Carrie A., O'Neil, Sean
A method to quantify robust performance for situations where structured parameter variations and initial state errors rather than extraneous disturbances are the main performance limiting factors is presented. The approach is based on the error dynam
Externí odkaz:
http://arxiv.org/abs/2305.03918
Autor:
Weidner, Carrie Ann, Reed, Emily A., Monroe, Jonathan, Sheller, Benjamin, O’Neil, Sean, Maas, Eliav, Jonckheere, Edmond A., Langbein, Frank C., Schirmer, Sophie
Publikováno v:
In Automatica February 2025 172
Publikováno v:
IEEE Trans Automatic Control, 67(11):6012-6024, 2022
Robust performance of control schemes for open quantum systems is investigated under classical uncertainties in the generators of the dynamics and nonclassical uncertainties due to decoherence and initial state preparation errors. A formalism is deve
Externí odkaz:
http://arxiv.org/abs/2008.13691
Publikováno v:
Proc IEEE 56th Annual Conference on Decision and Control (CDC), 2017
Selective transfer of information between spin-1/2 particles arranged in a ring is achieved by optimizing the transfer fidelity over a readout time window via shaping, externally applied, static bias fields. Such static control fields have properties
Externí odkaz:
http://arxiv.org/abs/1708.09649
Publikováno v:
IEEE Trans Automatic Control, 62(12):6568-6574, 2017
Control laws for selective transfer of information encoded in excitations of a quantum network, based on shaping the energy landscape using time-invariant, spatially-varying bias fields, can be successfully designed using numerical optimization. Such
Externí odkaz:
http://arxiv.org/abs/1706.03247
Autor:
Schirmer, Sophie, Phillips, Jonathan
Two different dynamic decoupling strategies, the classic CPMG and the more recently proposed UDD protocol are compared in the context of magnetic resonance imaging (MRI). Both sequences were implemented on a 3T human MRI system and relaxometry was pe
Externí odkaz:
http://arxiv.org/abs/1705.03292
Publikováno v:
Int J Robust and Nonlinear Control, 28(6):2383-2403, 2018
Selective information transfer in spin ring networks by energy landscape shaping control has the property that the error 1-prob, where prob is the transfer success probability, and the sensitivity of the error to spin coupling uncertainties are stati
Externí odkaz:
http://arxiv.org/abs/1612.02784
Publikováno v:
Chaos, Solitons and Fractals, 103, 622-31 (2017)
Quantum spin networks overcome the challenges of traditional charge-based electronics by encoding the information into spin degrees of freedom. Although beneficial for transmitting information with minimal losses when compared to their charge-based c
Externí odkaz:
http://arxiv.org/abs/1608.08192
Publikováno v:
IEEE Trans Automatic Control, 63(8):2523-2536, 2018
Information encoded in networks of stationary, interacting spin-1/2 particles is central for many applications ranging from quantum spintronics to quantum information processing. Without control, however, information transfer through such networks is
Externí odkaz:
http://arxiv.org/abs/1607.05294