Exciton-polariton condensates have attractive features for quantum computation, e.g., room temperature operation, high dynamical speed, ease of probe, and existing fabrication techniques. Here, we present a complete theoretical scheme of quantum computing with exciton-polariton condensates formed in semiconductor micropillars. Quantum fluctuations on top of the condensates are shown to realize qubits, which are externally controllable by applied laser pulses. Quantum tunneling and nonlinear interactions between the condensates allow SWAP, square-root-SWAP and controlled-NOT gate operations between the qubits.

中文翻译：

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激子-极化子凝聚体的量子计算

激子-极化子冷凝物具有用于量子计算的吸引人的功能，例如，室温操作，高动力学速度，易于探测和现有制造技术。在这里，我们提出了一个完整的量子计算理论方案，其中在半导体微柱中形成了激子-极化子冷凝物。冷凝物顶部的量子涨落显示为实现量子位，该量子位可通过施加激光脉冲进行外部控制。量子隧穿和冷凝物之间的非线性相互作用使得量子位之间可以进行SWAP，平方根SWAP和受控NOT门操作。