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Updated: May 21, 2025
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
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Error-detected quantum operations with neutral atoms mediated by an optical cavity
Brandon Grinkemeyer1, Elmer Guardado-Sanchez1, Ivana Dimitrova1
1Department of Physics, Harvard University, Cambridge, MA, USA.
Science (New York, N.Y.)
|March 20, 2025
Summary
We developed a neutral-atom quantum computing platform using optical cavities for fast qubit readout and entanglement. This system achieved high fidelity for qubit state readout and demonstrated two methods for generating entangled states for quantum networks.
Area of Science:
- Quantum Computing
- Quantum Networking
- Atomic Physics
Background:
- Neutral-atom quantum processors offer scalability for quantum computation.
- Integrating optical cavities enhances qubit readout and entanglement generation for quantum networks.
Purpose of the Study:
- To introduce a novel platform coupling single atoms in optical tweezers to a Fabry-Perot fiber cavity.
- To demonstrate fast, high-fidelity qubit readout and cavity-mediated entanglement generation.
Main Methods:
- Coupling single neutral atoms trapped in optical tweezers to a fiber Fabry-Perot cavity.
- Utilizing strong atom-cavity coupling for qubit manipulation and readout.
- Implementing cavity-carving and cavity-mediated gates for entanglement generation.
Main Results:
- Achieved fast qubit-state readout with high fidelity.
- Demonstrated cavity-carving to generate a Bell state with 91(4)% fidelity and 32(1)% success rate.
- Obtained a deterministic entanglement fidelity of 52.5(18)%, improved to 76(2)% with error detection.
Conclusions:
- The developed platform enables fast, high-fidelity operations for neutral-atom quantum systems.
- This approach facilitates modular quantum computing and networking applications.
- Integrated error detection enhances the performance of cavity-mediated entanglement generation.
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