Departamento de Física, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, 9170124, Santiago, Chile.
Center for the Development of Nanoscience and Nanotechnology, 9170124, Estación Central, Santiago, Chile.
Sci Rep. 2017 Jun 23;7(1):4157. doi: 10.1038/s41598-017-04467-1.
We study quantum state transfer between two qubits coupled to a common quantum bus that is constituted by an ultrastrong coupled light-matter system. By tuning both qubit frequencies on resonance with a forbidden transition in the mediating system, we demonstrate a high-fidelity swap operation even though the quantum bus is thermally populated. We discuss a possible physical implementation in a realistic circuit QED scheme that leads to the multimode Dicke model. This proposal may have applications on hot quantum information processing within the context of ultrastrong coupling regime of light-matter interaction.
我们研究了与公共量子总线耦合的两个量子位之间的量子态转移，该总线由超耦合光物质系统构成。通过将两个量子位的频率调谐到与中介系统中的禁戒跃迁共振，即使量子总线被热占据，我们也证明了高保真度的交换操作。我们讨论了一种在现实电路 QED 方案中的可能物理实现，该方案导致多模 Dicke 模型。该方案可能在光物质相互作用的超耦合 regime 内的热量子信息处理方面有应用。
