Sensing microwave photons with a Bose-Einstein condensate

被引：0
|
作者：
Kalman, Orsolya [1 ]
Domokos, Peter [1 ]
机构：
[1] Wigner Res Ctr Phys, Inst Solid State Phys & Opt, Dept Quantum Opt & Quantum Informat, Budapest, Hungary
来源：
EPJ QUANTUM TECHNOLOGY | 2020年 / 7卷 / 01期
关键词：
Bose-Einstein condensate; Waveguide resonator; Magnetic field sensing; Hyperfine transition; Atomlaser; QUANTUM-NONDEMOLITION DETECTION; ATOMS;
D O I：
10.1140/epjqt/s40507-020-0078-7
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We consider the interaction of a magnetically trapped Bose-Einstein condensate of Rubidium atoms with the stationary microwave radiation field sustained by a coplanar waveguide resonator. This coupling allows for the measurement of the magnetic field of the resonator by means of counting the atoms that fall out of the condensate due to hyperfine transitions to non-trapped states. We determine the quantum efficiency of this detection scheme and show that weak microwave fields at the single-photon level can be sensed.
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页数：13
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