A Rydberg quantum simulator

被引:693
作者
Weimer, Hendrik [1 ]
Mueller, Markus [2 ,3 ]
Lesanovsky, Igor [2 ,3 ,4 ]
Zoller, Peter [2 ,3 ]
Buechler, Hans Peter [1 ]
机构
[1] Univ Stuttgart, Inst Theoret Phys 3, D-70550 Stuttgart, Germany
[2] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria
[3] Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-6020 Innsbruck, Austria
[4] Univ Nottingham, Sch Phys & Astron, MUARC, Nottingham NG7 2RD, England
关键词
PHYSICS; ATOMS;
D O I
10.1038/NPHYS1614
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A universal quantum simulator is a controlled quantum device that reproduces the dynamics of any other many-particle quantum system with short-range interactions. This dynamics can refer to both coherent Hamiltonian and dissipative open-system evolution. Here we propose that laser-excited Rydberg atoms in large-spacing optical or magnetic lattices provide an efficient implementation of a universal quantum simulator for spin models involving n-body interactions, including such of higher order. This would allow the simulation of Hamiltonians of exotic spin models involving n-particle constraints, such as the Kitaev toric code, colour code and lattice gauge theories with spin-liquid phases. In addition, our approach provides the ingredients for dissipative preparation of entangled states based on engineering n-particle reservoir couplings. The basic building blocks of our architecture are efficient and high-fidelity n-qubit entangling gates using auxiliary Rydberg atoms, including a possible dissipative time step through optical pumping. This enables mimicking the time evolution of the system by a sequence of fast, parallel and high-fidelity n-particle coherent and dissipative Rydberg gates.
引用
收藏
页码:382 / 388
页数:7
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