Pulse sequences for controlled two- and three-qubit gates in a hybrid quantum register
Pulse sequences for controlled two- and three-qubit gates in a hybrid quantum register
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DOI：
10.1103/physreva.98.042302
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发表时间：
2018-06
影响因子：
2.9
通讯作者：
Jingfu Zhang;Swathi S. Hegde;D. Suter
中科院分区：
文献类型：
--
作者：
Jingfu Zhang;Swathi S. Hegde;D. Suter
我们提出并演示了一种混合量子寄存器的量子控制方案，与现有实现相比，该方案可以减少操作时间，从而减少松弛效果。它将谐振激励脉冲与量子位系统内部哈密顿量下的自由进动周期相结合。我们使用这个方案来实现量子门，例如对金刚石氮空位中心的电子和核自旋进行受控非运算。作为一个具体的应用，我们在电子和核自旋量子位之间转移群体，并用它来测量具有多个耦合自旋的系统中核自旋的拉比振荡。
We propose and demonstrate a quantum control scheme for hybrid quantum registers that can reduce the operation time, and therefore the effects of relaxation, compared to existing implementations. It combines resonant excitation pulses with periods of free precession under the internal Hamiltonian of the qubit system. We use this scheme to implement quantum gates like controlled-NOT operations on electronic and nuclear spins of the nitrogen-vacancy center in diamond. As a specific application, we transfer population between electronic and nuclear spin qubits and use it to measure the Rabi oscillations of a nuclear spin in a system with multiple coupled spins.