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Time optimal quantum state transfer in a fully-connected quantum computer
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DOI：10.1088/2058-9565/ad0770.png)
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Abstract
En 中文
The speed limit of quantum state transfer (QST) in a system of interacting particles is not only important for quantum information processing, but also directly linked to Lieb-Robinson-type bounds that are crucial for understanding various aspects of quantum many-body physics. For strongly long-range interacting systems such as a fully-connected quantum computer, such a speed limit is still unknown. Here we develop a new quantum brachistochrone method that can incorporate inequality constraints on the Hamiltonian. This method allows us to prove an exactly tight bound on the speed of QST on a subclass of Hamiltonians experimentally realizable by a fully-connected quantum computer.
Keywords:
quantum optimal control
quantum speed limits
quantum state transfer
Lieb-Robinson bounds
long-range interactions
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1.4K
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