论文标题
用光学添加的$^{171} $ yb $^{+} $ ion qudits实现量子门
Realizing quantum gates with optically-addressable $^{171}$Yb$^{+}$ ion qudits
论文作者
论文摘要
多级信息载体（也称为Qudits）的使用是探索量子计算设备可扩展性的有前途的途径。在这里，我们提出了量子处理器寄存器的原理证明实现，该量子寄存器使用光学添加的$^{171} $ yb $^{+} $ yb $^{+} $ ion qudits在线性陷阱中。 $^{171} $ yb $^{+} $ ions的丰富级别结构允许在435.5 nm处使用Quadrupole时钟过渡的Zeeman sublevels，以进行有效且可靠的Qudit编码。我们证明了由单Qudit旋转和带有两倍夸特系统的两倍莫尔默 - 索伦森操作组成的通用门集的实现，该操作正式等同于一个基于通用的栅极四Qubit的处理器。我们的结果铺平了一种进一步研究，以进一步研究具有基于困境的处理器的量子算法实现，尤其是探索$^{171} $ yb $ yb $^{+} $ ion qudits的属性。
The use of multilevel information carriers, also known as qudits, is a promising path for exploring scalability of quantum computing devices. Here we present a proof-of-principle realization of a quantum processor register that uses optically-addressed $^{171}$Yb$^{+}$ ion qudits in a linear trap. The rich level structure of $^{171}$Yb$^{+}$ ions allows using the Zeeman sublevels of the quadrupole clock transition at 435.5 nm for efficient and robust qudit encoding. We demonstrate the realization of the universal set of gates consisting of single-qudit rotations and a two-qudit Molmer-Sorensen operation with a two-ququart system, which is formally equivalent to a universal gate-based four-qubit processor. Our results paves a way towards further studies of more efficient implementations of quantum algorithms with trapped-ion-based processors and, specifically, exploring properties of $^{171}$Yb$^{+}$ ion qudits.
