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Control and Entanglement of Individual Rydberg Atoms near a Nanoscale Device
Paloma L Ocola1, Ivana Dimitrova1, Brandon Grinkemeyer1
1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Physical Review Letters
|April 2, 2024
Summary
Researchers achieved coherent control of Rydberg atoms near nanophotonic devices. They used optical tweezers and dynamical decoupling to cancel electric-field noise, enabling quantum applications.
Area of Science:
- Quantum Information Science
- Atomic Physics
- Nanophotonics
Background:
- Coherent control of Rydberg atoms is challenging near dielectric surfaces due to electric field sensitivity.
- Integrating Rydberg atoms with nanophotonic devices is crucial for quantum technologies.
Purpose of the Study:
- To demonstrate coherent single-atom operations and two-qubit entanglement near a nanophotonic device.
- To characterize and mitigate electric-field noise from dielectric surfaces.
- To enable the integration of Rydberg arrays with micro- and nanoscale devices.
Main Methods:
- Utilizing optical tweezers for precise control of individual Rydberg atoms.
- Employing dynamical decoupling techniques to cancel electric-field noise with submicrosecond resolution.
- Implementing entanglement-assisted sensing to map electric-field gradients.
Main Results:
- Achieved coherent single-atom operations and two-qubit entanglement at distances as close as 100 micrometers from a nanophotonic device.
- Successfully characterized and canceled electric-field noise originating from the dielectric surface.
- Accurately mapped electric-field gradients on a micrometer scale.
Conclusions:
- Demonstrated a viable method for coherent control of Rydberg atoms near nanophotonic devices.
- Overcame significant challenges posed by electric-field noise.
- Paved the way for integrating Rydberg arrays with micro- and nanoscale devices for quantum networking and information science.
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