论文标题
与捕获的离子有强大的动态交换冷却
Robust dynamical exchange cooling with trapped ions
论文作者
论文摘要
从理论上讲，我们通过与预冷离子的瞬时相互作用来研究被困的原子离子的稳健和快速冷却的可能性。瞬态耦合是通过对离子平衡位置的动态控制来实现的。为了达到短冷却时间，我们通过应用基于不变的工程来利用对绝热的快捷方式。我们设计这些以考虑到不完美的杂物和陷阱频率偏移。对于适合当前运营陷阱的设置，我们发现可降至6.3美元的$ 6.3 $ MOTINTION CYCLES，包括$ 14.2 \\ \ \ \\ Mathrm {μs} $，用于$ 0.44 \\\\\\\\\\\\\\\\·米尔姆{mhz} $ trap频率。在弱耦合方案中使用激光冷却可以实现的速度要快得多，这使得在量子计算的背景下成为有吸引力的方案。
We investigate theoretically the possibility for robust and fast cooling of a trapped atomic ion by transient interaction with a pre-cooled ion. The transient coupling is achieved through dynamical control of the ions' equilibrium positions. To achieve short cooling times we make use of shortcuts to adiabaticity by applying invariant-based engineering. We design these to take account of imperfections such as stray fields, and trap frequency offsets. For settings appropriate to a currently operational trap in our laboratory, we find that robust performance could be achieved down to $6.3$ motional cycles, comprising $14.2\ \mathrm{μs}$ for ions with a $0.44\ \mathrm{MHz}$ trap frequency. This is considerably faster than can be achieved using laser cooling in the weak coupling regime, which makes this an attractive scheme in the context of quantum computing.
