论文标题
光子数依赖性有效羔羊移位
Photon-number-dependent effective Lamb shift
论文作者
论文摘要
在各种量子系统中观察到了由电磁真空的存在产生的能量转移，这是一种能量转移的一部分，它独立于环境光子数。但是，典型的研究基于可能在实用量子设备中受到挑战的简单骨气模型。我们为线性谐振器模式展示了一个混合骨体性环境，并观察到环境中的光子数可以显着增加模式的耗散和有效的羊肉移位。我们的观察结果是通过第一原理模型进行定量描述的，我们在这里还开发了该观察结果，以指导未来量子技术应用的设备设计。此处演示的设备可以用作完全射频的量子电路冰箱，以快速重置超导码头。
The Lamb shift, an energy shift arising from the presence of the electromagnetic vacuum, has been observed in various quantum systems and established as the part of the energy shift independent of the environmental photon number. However, typical studies are based on simplistic bosonic models which may be challenged in practical quantum devices. We demonstrate a hybrid bosonic-fermionic environment for a linear resonator mode and observe that the photon number in the environment can dramatically increase both the dissipation and the effective Lamb shift of the mode. Our observations are quantitatively described by a first-principles model which we develop here also to guide device design for future quantum-technological applications. The device demonstrated here can be utilized as a fully rf-operated quantum-circuit refrigerator to quickly reset superconducting qubits.
