We present progress in demonstrating Rydberg interactions between a single Rb and a single Cs atom simultaneously trapped in a single 976 nm optical tweezer. Rydberg lev- els in heteronuclear systems have different quantum defects, as opposed to homonuclear systems, and can therefore be chosen to minimize the Forster defect and increase the Rydberg interaction strength beyond symmetric Rydberg pairs at comparable energy levels. Additionally, multi-species systems are distinguishable and can be frequency multi- plexed in a straightforward manner. Frequency multiplexing both the state preparation and state readout is used in characterizing elastic and inelastic collision rates between Rb and Cs, as well as enabling crosstalk free ancilla measurements for quantum error correction.
Co-trapped heteronuclear Rydberg and Collisional Interactions in an Optical Dipole Trap
We present progress in demonstrating Rydberg
interactions between a single Rb and a single Cs atom simultaneously trapped
in a single 1064 nm optical tweezer. Rydberg levels in heteronuclear systems have
different quantum defects, as opposed to homonuclear systems, and can therefore be
chosen to minimize the Forster defect and increase the Rydberg interaction strength
beyond symmetric Rydberg pairs at comparable energy levels. Additionally, multispecies
systems are distinguishable and can be frequency multiplexed in a straightforward
manner, enabling crosstalk free ancilla measurements for quantum error
correction. To determine the feasibility of co-trapped heteronuclear samples for
quantum information and communication applications, we also measure the heteronuclear
collision rates between single Rb and single Cs atoms and resolve differences
in the hyperfine collision rates. Photoassociation rate of the atoms into a
molecular state via the 1064 nm trap laser is also measured.
- Award ID(s):
- 1720220
- Publication Date:
- NSF-PAR ID:
- 10101171
- Journal Name:
- APS DAMOP meeting, May 2019 Milwaukee
- Sponsoring Org:
- National Science Foundation
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