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Quantum Information Processing

Circuit QED: generation of two-transmon-qutrit entangled states via resonant interaction

  • 01-04-2018
Published in:
Authors
Xi-Mei Ye
Zhen-Fei Zheng
Dao-Ming Lu
Chui-Ping Yang
Published in
Quantum Information Processing | Issue 4/2018

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Abstract

We present a way to create entangled states of two superconducting transmon qutrits based on circuit QED. Here, a qutrit refers to a three-level quantum system. Since only resonant interaction is employed, the entanglement creation can be completed within a short time. The degree of entanglement for the prepared entangled state can be controlled by varying the weight factors of the initial state of one qutrit, which allows the prepared entangled state to change from a partially entangled state to a maximally entangled state. Because a single cavity is used, only resonant interaction is employed, and none of identical qutrit–cavity coupling constant, measurement, and auxiliary qutrit is needed, this proposal is easy to implement in experiments. The proposal is quite general and can be applied to prepare a two-qutrit partially or maximally entangled state with two natural or artificial atoms of a ladder-type level structure, coupled to an optical or microwave cavity.

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previous article Quantum iSWAP gate in optical cavities with a cyclic three-level system
next article Bipartite non-classical correlations for a lossy two connected qubit–cavity systems: trace distance discord and Bell’s non-locality
Title
Circuit QED: generation of two-transmon-qutrit entangled states via resonant interaction
Authors
Xi-Mei Ye
Zhen-Fei Zheng
Dao-Ming Lu
Chui-Ping Yang
Publication date
01-04-2018
Publisher
Springer US
Published in
Quantum Information Processing / Issue 4/2018
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-018-1861-6
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