Abstract
We present a theoretical scheme to generate N-quNit singlet states with N 3 via adiabatic passage. In this protocol, the system may be robust against both experimental parameter fluctuations and dissipations along dark states. In addition, during the whole procedure, quantum information is almost fully transferred between atomic ground states. It reduces the influence of dissipations such as atomic spontaneous emissions and cavity decays. Thus, the presented proposal may be feasible based on current technologies.
Highlights
We present a theoretical scheme to generate N-quNit singlet states with N ⩾ 3 via adiabatic passage
Singlet states may be significant for quantum computation, it is a great challenge to prepare NNSS
How can we realize storing an NNSS in ground states and avoid the use of a multi-mode cavity at the same time? In this paper, we suggest to generate NNSS for atoms with N − 1 excited states and N ground states in a single-mode cavity via adiabatic passage
Summary
Rong-Can Yang[1,2,3], Li-Xiang Ye1,2, Xiu Lin1,2 & Hong-Yu Liu[4] received: 17 October 2016 accepted: 03 March 2017 Published: 03 April 2017. We present a theoretical scheme to generate N-quNit singlet states with N ⩾ 3 via adiabatic passage. How can we realize storing an NNSS in ground states and avoid the use of a multi-mode cavity at the same time? We suggest to generate NNSS for atoms with N − 1 excited states and N ground states in a single-mode cavity via adiabatic passage. The reason why we use adiabatic-passage technology is that it is insensitive to the variation of experimental parameters[27,28,29] Based on this technology or its further versions (such as transitionless quantum driving[30] and invariant-based shortcut31), many suggestions are shown to realize multi-level entanglement, e.g. shown in the refs 22, 23, 25, 26 and 32.
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