Non-Adiabatic Holonomic Quantum Gates
2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)(2023)
摘要
Implementing quantum gates as non-Abelian holonomies, a class of topologically protected unitary operators, is a particularly promising paradigm for the design of intrinsically stable quantum computers [1]. In contrast to dynamic phases, the geometric phase accumulated by a quantum system propagating through a Hilbert space
$\mathcal{H}$
depends exclusively on its path. In general, geometric phases can exhibit arbitrary dimensionality. Wilczek and Zee introduced the idea of multi-dimensional, non-Abelian geometric phases - so called holonomies [2]. Anandan later dropped the requirement of adiabaticity to create holonomies, that are truly time-independent [3]. Non-adiabatic holonomies rely on a subspace
$\mathcal{H}_{\text{geo}}$
of the Hilbert-space that is spanned by states
$\{\vert \Phi_{k}\rangle\}_{k}$
that fulfill
$(\Phi_{k}\vert \hat{H}\vert \Phi_{j}\rangle=0$
, where
$\hat{H}$
is the system's Hamiltonian. Restricting the propagation to
$\mathcal{H}_{\text{geo}}$
ensures parallel transport and, thus, a purely geometric phase (see Fig. 1a) [4], [5]. Quantum optics constitutes a particularly versatile platform for quantum information processing, and in particular for the construction of non-adiabatic holonomic quantum computers: In addition to integration and miniaturization provided by the platform, the bosonic nature of photons also conveniently allows for multiple excitations of the same mode, readily expanding
$\mathcal{H}_{\text{geo}}$
and enabling the synthesis of holonomies from higher symmetry groups
$\mathrm{U}(N)$
as larger and more capable computational units [6], [7].
更多查看译文
关键词
arbitrary dimensionality,dynamic phases,geometric phase,Hilbert-space,intrinsically stable quantum computers,nonAbelian geometric phases,nonAbelian holonomies,nonadiabatic holonomic quantum computers,nonadiabatic holonomic quantum gates,quantum information processing,quantum optics,quantum system propagating,topologically protected unitary operators
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要