论文标题
在双量子点中的两电子自旋状态的完整读数
Complete readout of two-electron spin states in a double quantum dot
论文作者
论文摘要
我们提出并演示了由电表探测的双量子点中的两电子系统的完整自旋状态读数。该协议基于使用Pauli自旋封锁的重复单射击测量值，以及我们在GHz和Sub-Hz策略之间调节速度尺度和互截面隧道耦合的能力。三个不同的操作和测量的序列允许确定旋转在s，tzero，tplus或tminus状态中。这项工作指向了减少旋转读数开销的过程，这是扩展自旋量子平台的重要挑战。
We propose and demonstrate complete spin state readout of a two-electron system in a double quantum dot probed by an electrometer. The protocol is based on repetitive single shot measurements using Pauli spin blockade and our ability to tune on fast timescales the detuning and the interdot tunnel coupling between the GHz and sub-Hz regime. A sequence of three distinct manipulations and measurements allows establishing if the spins are in S, Tzero, Tplus or Tminus state. This work points at a procedure to reduce the overhead for spin readout, an important challenge for scaling up spin qubit platforms.
