通过格子手术纠逻辑量子位
Alexander Erhard1, Hendrik Poulsen Nautrup2, Michael Meth1
1Institute for Experimental Physics, University of Innsbruck, Innsbruck, Austria.
Nature
|January 14, 2021
概括
研究人员在两个逻辑量子比特之间演示了晶格手术, 这种容错量子计算的进步使得诸如纠和传输之类的基本操作成为可能.
科学领域:
- 量子信息科学
- 量子计算架构
- 容错量子计算
背景情况:
- 量子计算的发展依赖于通过量子错误校正的容错性.
- 容错逻辑操作需要逻辑量子位的大量开销.
- 格子手术提供了一个资源高效的方法来实现逻辑操作.
研究的目的:
- 在拓保护的逻辑量子位之间实验实现格子手术.
- 为了展示容错量子计算的基本操作.
主要方法:
- 使用十个量子位离子陷量子信息处理器.
- 通过合并和分割物理量子位实现了格子手术.
- 使用局部,纠门和辅助量子比特测量进行了量子非拆除测量.
主要成果:
- 在两个逻辑量子位之间成功演示了格子手术.
- 在两个逻辑量子位之间实现了纠.
- 在逻辑量子位之间实现逻辑状态传输.
结论:
- 实验性实现格子手术是有效的容错量子计算的重要一步.
- 使用格子手术证明了量子计算的基本构建块.
- 这项工作为可扩展的量子信息处理铺平了道路.
相关概念视频
Bewley Lattice Diagram
997
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
997
Lattice Centering and Coordination Number
10.5K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Types of Unit Cells
Imagine taking a large number of identical...
10.5K
Trends in Lattice Energy: Ion Size and Charge
25.6K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
25.6K
Molecular Orbital Theory I
39.2K
Overview of Molecular Orbital Theory
39.2K
Hybridization of Atomic Orbitals II
39.9K
sp3d and sp3d 2 Hybridization
39.9K
Hybridization of Atomic Orbitals I
56.2K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
56.2K


