Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Langbein, Frank C"'
Magnetic resonance imaging (MRI) has become a crucial tool in the diagnosis and staging of prostate cancer, owing to its superior tissue contrast. However, it also creates large volumes of data that must be assessed by trained experts, a time-consumi
Externí odkaz:
http://arxiv.org/abs/2406.15571
Publikováno v:
Computers in Biology and Medicine, 184:109353, 2025
Early-stage 3D brain tumor segmentation from magnetic resonance imaging (MRI) scans is crucial for prompt and effective treatment. However, this process faces the challenge of precise delineation due to the tumors' complex heterogeneity. Moreover, en
Externí odkaz:
http://arxiv.org/abs/2404.05911
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:
Khalid, Irtaza, Weidner, Carrie A., Jonckheere, Edmond A., Shermer, Sophie G., Langbein, Frank C.
Publikováno v:
Phys. Rev. Research 5, 043002 (2023)
We propose a model-based reinforcement learning (RL) approach for noisy time-dependent gate optimization with improved sample complexity over model-free RL. Sample complexity is the number of controller interactions with the physical system. Leveragi
Externí odkaz:
http://arxiv.org/abs/2304.09718
Publikováno v:
ONeil, S, Langbein, F, Jonckheere, E, & Shermer, S (2023). Robustness of Energy Landscape Control to Dephasing. Research Directions: Quantum Technologies, 1-11
As shown in previous work, in some cases closed quantum systems exhibit a non-conventional trade-off in performance and robustness in the sense that controllers with the highest fidelity can also provide the best robustness to parameter uncertainty.
Externí odkaz:
http://arxiv.org/abs/2303.05649
Publikováno v:
In Computers in Biology and Medicine January 2025 184
Autor:
Khalid, Irtaza, Weidner, Carrie A., Jonckheere, Edmond A., Shermer, Sophie G., Langbein, Frank C.
Publikováno v:
Phys Rev A. 107.032606 (2023)
Robustness of quantum operations or controls is important to build reliable quantum devices. The robustness-infidelity measure (RIM$_p$) is introduced to statistically quantify the robustness and fidelity of a controller as the p-order Wasserstein di
Externí odkaz:
http://arxiv.org/abs/2207.07801
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:
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