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|Title:||Tree-size complexity of multiqubit states|
|Source:||Nguyên, L.H., Cai, Y., Wu, X., Scarani, V. (2013-07-22). Tree-size complexity of multiqubit states. Physical Review A - Atomic, Molecular, and Optical Physics 88 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.88.012321|
|Abstract:||Complexity is often invoked alongside size and mass as a characteristic of macroscopic quantum objects. In 2004, Aaronson introduced the tree size (TS) as a computable measure of complexity and studied its basic properties. In this paper, we improve and expand on those initial results. In particular, we give explicit characterizations of a family of states with superpolynomial complexity nΩ(logn)=TS=O(√n!) in the number of qubits n, and we show that any matrix-product state whose tensors are of dimension D×D has polynomial complexity TS=O(nlog22D). © 2013 American Physical Society.|
|Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics|
|Appears in Collections:||Staff Publications|
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