Tue May 7, 2019 4:00 pm
Jeff Thompson: New platforms for quantum science: solid-state defects and cold atom arrays
Location:Harvard Jefferson 250
Jeff Thompson, Princeton
Ten Minute Talk:"Dicke time crystals in driven-dissipative quantum many body systems" by
Jamir Marino
In this talk, I will discuss our recent work on developing two novel platforms for quantum science and technology. The first is arrays of individually addressed single Er3+ ions in silicon nanophotonic circuits. These are promising for quantum networks because of their telecom wavelength optical transitions (1.53 µm), but also offer the possibility of strong ion-ion interactions because of their large magnetic moments. Leveraging 1000-fold Purcell enhancement of the Er3+ ions’ optical transitions, we have demonstrated single photon emission from single Er3+ ions for the first time, as well as high-fidelity optical readout of the ground state spin using a robust sub-wavelength addressing technique.
In the second part of my talk, I will discuss our approach to constructing arrays of laser-cooled Yb atoms in optical tweezers with Rydberg-mediated interactions. In contrast to existing approaches with alkali atoms, alkaline-earth atoms such as Yb offer a richer level structure that presents several advantages in terms of cooling, state manipulation and readout and coherence of Rydberg gate schemes. I will present our results on generating large-scale Yb atom arrays, imaging atoms with high fidelity using the intercombination line, and discuss some ongoing work on spectroscopy of Yb Rydberg gates and interactions between trapped atoms.