Universal control of quantum subspaces and subsystems
Universal control of quantum subspaces and subsystems
复制标题
量子子空间和子系统的通用控制
DOI:
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发表时间:
2003
期刊:
影响因子:
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通讯作者:
Seth Lloyd
中科院分区:
文献类型:
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作者:
Paolo Zanardi;Paolo Zanardi;Seth Lloyd
We describe a broad dynamical-algebraic framework for analyzing the quantum control properties of a set of naturally available interactions. General conditions under which universal control is achieved over a set of subspaces/subsystems are found in terms of the representation theory of the group U{sub A} of allowed quantum evolutions. In some cases universal control can be achieved in all the state-space sectors carrying an irreducible action of U{sub A}. All known physical examples of universal control on subspaces/systems are related to the framework developed here. Implications for quantum-information processing are discussed.