Fast nuclear-spin gates and electrons-nuclei entanglement of neutral atoms in weak magnetic fields

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：We present a novel class of Rydberg-mediated nuclear-spin entanglement in divalent atoms with global laser pulses.First,we show a fast nuclear-spin controlled phase gate of an arbitrary phase realizable either with two laser pulses when assisted by Stark shifts,or with three pulses.Second,we propose to create an electrons-nuclei-entangled state,which is named a super bell state(SBS)for it mimics a large Bell state incorporating three small Bell states.Third,we show a protocol to create a three-atom elec-trons-nuclei entangled state which contains the three-body W and Green-berger-Horne-Zeilinger(GHZ)states simultaneously.These protocols possess high intrinsic fidelities,do not require single-site Rydberg address-ing,and can be executed with large Rydberg Rabi frequencies in a weak,Gauss-scale magnetic field.The latter two protocols can enable measure-ment-based preparation of Bell,hyperentangled,and GHZ states,and,specifically,SBS can enable quantum dense coding where one can share three classical bits of information by sending one particle.

外文关键词：

nuclear-spin qubitelectrons-nuclei entanglementsuper Bell stateGreenberger-Horne-Zeilinger stateRydberg-mediated entanglementquantum dense coding

作者：

Xiao-Feng Shi

展开 >

作者单位：

School of Physics,Xidian University,Xi'an 710071,China

基金：

国家自然科学基金国家自然科学基金Innovation Program for Quantum Science and Technology中央高校基本科研业务费专项

项目编号：

12074300118051462021ZD0302100

出版年：

2024

DOI：

10.1007/s11467-023-1332-0

物理学前沿

高等教育出版社

物理学前沿

CSTPCD

影响因子：0.816

ISSN：2095-0462

年,卷(期)：2024.19(2)

参考文献量68