Measurement-based ground-state cooling of a trapped-ion oscillator

被引：2

作者：

Lee, Chungsun ^{[1
]}

Webster, Simon C. ^{[1
]}

Toba, Jacopo Mosca ^{[1
]}

Corfield, Ollie ^{[1
]}

Porter, George ^{[1
]}

Thompson, Richard C. ^{[1
]}

机构：

[1] Imperial Coll London, Blackett Lab, London SW7 2AZ, England

来源：

PHYSICAL REVIEW A | 2023年 / 107卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

QUANTUM; MANIPULATION;

D O I：

10.1103/PhysRevA.107.033107

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Measurement-based cooling is a method by which a quantum system, initially in a thermal state, can be prepared probabilistically in its ground state through some sort of measurement. This is done by making a measurement that heralds the system being in the desired state. Here we demonstrate the application of a measurement-based cooling technique to a trapped atomic ion. The ion is precooled by Doppler laser cooling to a thermal state with a mean excitation of n approximate to 18 and the measurement-based cooling technique selects those occasions when the ion happens to be in the motional ground state. The fidelity of the heralding process is greater than 95%. This technique could be applied to other systems that are not as amenable to laser cooling as trapped ions.

引用

页数：7

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