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Published on: February 23, 2017
Individual-ion addressing with microwave field gradients
U Warring1, C Ospelkaus, Y Colombe
1Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA. ulrich.warring@physik.uni-freiburg.de
This study demonstrates individual qubit control in trapped ions using microfabricated surface traps and microwave fields. This advancement is crucial for scalable quantum information processing with low error rates.
Area of Science:
- Quantum Information Science
- Atomic Physics
- Quantum Computing Hardware
Background:
- Individual qubit control is essential for quantum information processing.
- Trapped-ion systems are a leading platform for quantum computation.
- Microfabrication techniques enable complex control electrode structures.
Purpose of the Study:
- To demonstrate individual-qubit addressing in trapped-ion systems.
- To implement control using microwave near fields.
- To assess the feasibility for quantum information experiments.
Main Methods:
- Utilizing microfabricated surface-electrode traps for ion confinement.
- Employing integrated electrode structures to deliver microwave near fields.
- Performing individual control on two Magnesium-25 ions (25Mg+) separated by 4.3 micrometers.
Main Results:
- Successful demonstration of individual qubit addressing on trapped ions.
- Achieved spin-flip crosstalk errors on the order of 10^-3.
- Presented four distinct approaches for quantum information experiments.
Conclusions:
- Individual qubit addressing is achievable with integrated microfabricated traps and microwave fields.
- The demonstrated technique shows promise for scalable trapped-ion quantum computers.
- Low crosstalk errors indicate high fidelity for quantum operations.
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