Jul 17 – 22, 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Enriching the quantum toolbox of ultracold molecules with Rydberg atoms

Jul 19, 2022, 5:00 PM
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Quantum information: gates, sensing, communication, and thermodynamics Poster session

Description

Assembly of rovibrational ground-state NaCs molecules in an optical tweezer array will allow for high-fidelity quantum computation and the exploration of rich dipolar exchange Hamiltonians. Currently, these systems are limited by a minimum tweezer separation, which sets a hard cap on the interaction strength and increases the characteristic time for interesting physics. Further, readout requires re-separation into the component atoms, which is destructive and error-prone. We propose a hybrid array of optically-trapped molecules and atoms to solve these problems. By leveraging the large dipole moment of resonant Cesium Rydberg levels, we can increase the effective molecular coupling and achieve fast high-fidelity gates. The atoms can then be used as auxiliary qubits for entanglement and projective measurement, giving us a path towards nondestructive molecular readout. A near-term implementation of this scheme in our molecular qubit array can carry out 300ns entangling gates with potential gate and readout fidelities higher than 99.9%.

Presenter name Conner Williams
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Primary authors

Conner Williams (Harvard University) Kenneth Wang (Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA) Lewis Picard (Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA) Norman Yao (Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA, Department of Physics, UC Berkeley, Berkeley, California 94720, USA) Kang-Kuen Ni (Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA, Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA)

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