量子比特绕黑洞的绝热输运
Adiabatic transport of qubits around a black hole
摘要：
我们考虑定域量子比特在黑洞周围遵循量子绝热动力学演化。我们开发了一个几何结构（基于纤维束），允许描述的量子态的量子比特和时空几何在一个单一的框架。在此框架下分析了黑洞对量子比特的量子退相干（讨论了动力学相位和几何相位在退相干中的作用），特别是当一个量子比特落入事件视界时的量子隐形传态协议.导出了计算量子隐形传态保真度的简单公式。分析了史瓦西黑洞的情况。
英文摘要：
We consider localized qubits evolving around a black hole following a quantum adiabatic dynamics. We develop a geometric structure (based on fibre bundles) permitting to describe the quantum states of a qubit and the spacetime geometry in a single framework. The quantum decoherence induced by the black hole on the qubit is analysed in this framework (the role of the dynamical and geometric phases in this decoherence is treated), especially for the quantum teleportation protocol when one qubit falls to the event horizon. A simple formula to compute the fidelity of the teleportation is derived. The case of a Schwarzschild black hole is analysed.
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