Single-domain Bose condensate magnetometer achieves energy resolution per bandwidth below $\hslash$

Silvana Palacios Alvarez, Pau Gomez, Simon Coop +3

We present a magnetic sensor with energy resolution per bandwidth $E_R<\hslash$. We show how a ${}^{87}\mathrm{Rb}$ single domain spinor Bose-Einstein condensate, detected by non-des…