dorsal/arxiv
View SchemaEntanglement and teleportation of macroscopic continuous variables by superconducting devices
| Authors | L. Fisch, I. E. Mazets, G. Kurizki |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0504153 |
| URL | https://arxiv.org/abs/quant-ph/0504153 |
Abstract
A current-biased low-temperature superconducting Josephson junction (JJ) is dynamically describable by the quantized motion of a fictitious particle in a "washboard" potential. The long coherence time of tightly-bound states in the washboard potential of a JJ has prompted the effort to couple JJs and operate them as entangled qubits, capable of forming building blocks of a scalable quantum computer. Here we consider a hitherto unexplored quantum aspect of coupled JJs: the ability to produce Einstein-Podolsky-Rosen (EPR) entanglement of their continuous variables, namely, their magnetic fluxes and induced charges. Such entanglement, apart from its conceptual novelty, is the prerequisite for a far-reaching goal: teleportation of the flux and charge variables between JJs, implementing the transfer of an unknown quantum state along a network of such devices.
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"abstract": "A current-biased low-temperature superconducting Josephson junction (JJ) is\ndynamically describable by the quantized motion of a fictitious particle in a\n\"washboard\" potential. The long coherence time of tightly-bound states in the\nwashboard potential of a JJ has prompted the effort to couple JJs and operate\nthem as entangled qubits, capable of forming building blocks of a scalable\nquantum computer. Here we consider a hitherto unexplored quantum aspect of\ncoupled JJs: the ability to produce Einstein-Podolsky-Rosen (EPR) entanglement\nof their continuous variables, namely, their magnetic fluxes and induced\ncharges. Such entanglement, apart from its conceptual novelty, is the\nprerequisite for a far-reaching goal: teleportation of the flux and charge\nvariables between JJs, implementing the transfer of an unknown quantum state\nalong a network of such devices.",
"arxiv_id": "quant-ph/0504153",
"authors": [
"L. Fisch",
"I. E. Mazets",
"G. Kurizki"
],
"categories": [
"quant-ph",
"cond-mat.supr-con"
],
"title": "Entanglement and teleportation of macroscopic continuous variables by superconducting devices",
"url": "https://arxiv.org/abs/quant-ph/0504153"
},
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