Giant Cross–Kerr Effect for Propagating Microwaves Induced by an Artificial Atom 论文

详细信息

发表期刊/会议

Physical Review Letters

发表日期

2013-08-02

发表年份

2013

摘要

We investigate the effective interaction between two microwave fields, mediated by a transmon-type superconducting artificial atom which is strongly coupled to a coplanar transmission line. The interaction between the fields and atom produces an effective cross-Kerr coupling. We demonstrate average cross-Kerr phase shifts of up to 20 degrees per photon with both coherent microwave fields at the single-photon level. Our results provide an important step toward quantum applications with propagating microwave photons.