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Information flow and error scaling for fully quantum control
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DOI：10.1103/PhysRevResearch.4.023027.png)
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The optimally designed control of quantum systems is playing an increasingly important role to engineer novel and more efficient quantum technologies. Here, in the scenario represented by controlling an arbitrary quantum system via the interaction with an another optimally initialized auxiliary quantum system, we show that the quantum channel capacity sets the scaling behavior of the optimal control error. Specifically, by fitting the model to numerical data, we verify that the minimum control error is ensured by maximizing the quantum capacity of the channel mapping the initial control state into the target state of the controlled system, i.e., optimizing the quantum information flow from the controller to the system to be controlled. Analytical results, supported by numerical evidences, are provided when the systems and the controller are either qubits or single Bosonic modes.
Keyword:
SCHRODINGER CAT STATES
GENERATION
COMMUNICATION
ENTANGLEMENT
CHANNELS
DYNAMICS
期刊
IF:
4.2
论文数:
7.6K
被引数:
2.7W
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