The ABC of cQED

Peter Swirski

Ge Ge, Min, Zhu +3 more

我们经由否定性学习 three-qubit 系统的纠纷动力学。三原子 A， B，和 C 与他们的自己的贾内斯·卡明斯洞 isolatedly 交往一， b，和 c。Aa 系统被准备然而，与 Bb 和 Cc 纠缠了他们的相互的隔离禁止与系统 Bb 和 Cc 交往的 Aa。它是为系统 Bb 和 Cc 的一样。我们显示出不同 three-qubit 系统 ABC， abc， Abc，和 aBC 的纠纷进化并且发现纠纷突然的死亡效果。

Rashi Kaimal, Roderich Tumulka

In quantum mechanics, among the proposals for how to compute the probability distribution of detection time and place along a given spatial surface or in a given volume, two leading candidates involve absorbing boundary conditions (ABCs) and complex absorbing potentials (CAPs) for the Schrödinger equation. Here, we extend earlier results on how the two are related. It was previously shown that ABCs arise as a limiting case of CAPs, but for that a (reflecting) Neumann boundary condition was assumed at the end of the region with the CAP. Here, we obtain ABCs in a different limit using a Dirichlet boundary condition at the end of the CAP region, which seems more practically relevant and realizable.

Min Ge, Zhu Lin-Fan, Qiu Liang

We study entanglement dynamics of three-qubit system via negativity. Three atoms A, B, and C interact isolatedly with their own Jaynes–Cummings cavities a, b, and c. Aa system is prepared entangled with Bb and Cc, however, their mutual isolations forbid Aa interacting with system Bb and Cc. It is the same for system Bb and Cc. We show entanglement evolution of different three-qubit systems ABC, abc, Abc, and aBC and find entanglement sudden death effect.

Jonas Larson, Th. K. Mavrogordatos