Make your own clock states

JQI-QuICS-CMTC Seminar

Dimitri Trypogeorgos (JQI)
April 20, 2018
PSC 2136

Decoherence of quantum systems due to uncontrolled fluctuations of the environment presents fundamental obstacles in quantum science. `Clock' transitions which are insensitive to such fluctuations are used to improve coherence, however, they are not present in all systems or for arbitrary system parameters. In this talk I will discuss how to create a trio of synthetic clock transitions using continuous dynamical decoupling. In our spin-1 Bose-Einstein condensate, this reduces of sensitivity to magnetic field noise of up to four orders of magnitude. This scheme can be used in a concatenated manner to further reduce the fluctuations in the control fields themselves. These field-insensitive states represent an ideal foundation for the next generation of cold atom experiments focused on fragile many-body phases relevant to quantum magnetism, artificial gauge fields, and topological matter.

Notes: Snacks and drinks at 4:00 pm, talk at 4:10 pm.