Pauli spin blockade in a silicon triangular triple quantum dot
Pauli spin blockade in a silicon triangular triple quantum dot
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DOI：
10.7567/1347-4065/ab65cf
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发表时间：
2020-04-01
影响因子：
1.5
通讯作者：
Kodera, Tetsuo
中科院分区：
文献类型：
--
作者：
Tadokoro, Masahiro;Mizokuchi, Raisei;Kodera, Tetsuo
研究了硅三角形三重量子点的输运性质。三角形三重量子点是六角密排结构的单胞，因此，有利于实现量子计算机所需的大量子比特集成。此外，当用作仅交换量子比特时，三角形阵列有利于量子比特可控性，因为它有三个轴用于控制量子比特。我们在300 mK的温度下测量流过三角形三重量子点的电流，并观察到泡利自旋封锁在两个量子点的三重量子点，其中电流被抑制取决于量子点中的自旋状态。这种现象使得初始化和自旋读出成为可能，这对于未来量子比特的实现和自旋相关物理的研究是有用的。(C)2020日本应用物理学会
We study transport properties through a physically defined silicon triangular triple quantum dot (QD). The triangular triple QD is the unit cell of hexagonal close packing structure and therefore, advantageous for large qubit integration which is necessary for realizing quantum computers. In addition, when used as an exchange-only qubit, a triangular array is favorable for qubit controllability because it has three axes for controlling qubit. We measure current flowing through the triangular triple QD at a temperature of 300 mK and observe Pauli spin blockade in two QDs of the triple QD, where the current is suppressed depending on spin states in the QDs. This phenomenon enables initialization and spin readout, which is useful for future realization of qubits and study of spin-related physics. (C) 2020 The Japan Society of Applied Physics