Entanglement Storage Units
نویسندگان
چکیده
Entanglement represents the manifestation of correlations without a classical counterpart and it is regarded as the necessary ingredient at the basis of the power of quantum information processing. Indeed quantum information applications as teleportation, quantum criptography or quantum computers rely on entanglement as a crucial resource [1]. Within the current state-of-art, promising candidates for truly scalable quantum information processors are considered architectures that interface hardware components playing different roles like for example solid-state systems as stationary qubits combined in hybrid architectures with optical devices [3]. In this scenario, the stationary qubits are a collection of engineered qubits with desired properties, as decoupled as possible from one another to prevent errors. However, this architecture is somehow unfavorable to the creation and the conservation of entanglement. Indeed, it would be desirable to have a hardware where “naturally” entanglement is present and that can be prepared in a highly entangled state that persists without any external control: the closest quantum entanglement analogue of a classical information memory support, i.e. an entanglement-storage unit (ESU). Such hardware once prepared can be used at later times (alone or with duplicates) – once the desired kind of entanglement has been distilled – to perform quantum information protocols [1].
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