Microwave near-fields on atom chips

Microwave near-fields are a key ingredient for quantum information processing with atom chips. Our goal is to realize a quantum gate with the following features: the qubit is encoded in the hyperfine states |1rang equiv |F=1, m F =-1rang and |2rang equiv |F=2, m F =+1rang of 87 Rb, which are both ma...

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Bibliographic Details
Main Authors: Treutlein, P., Bohi, P., Hoffrogge, J., Hansch, T.W., Reichel, J.
Format: Conference Proceeding
Language:English
Subjects:
Atomic layer deposition
Coplanar waveguides
DC generators
Gold
Information processing
Interferometry
Lenses
Metallization
Microwave generation
Quantum computing
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Summary:Microwave near-fields are a key ingredient for quantum information processing with atom chips. Our goal is to realize a quantum gate with the following features: the qubit is encoded in the hyperfine states |1rang equiv |F=1, m F =-1rang and |2rang equiv |F=2, m F =+1rang of 87 Rb, which are both magnetically trappable and allow for very long coherence lifetimes. Microwave near-fields guided on the atom chip are used to drive single-qubit rotations and provide state-selectivity to the magnetic trapping potential. The quantum phase gate is implemented by state-selective collisions of two qubit atoms in this potential. Besides applications in quantum information processing, microwave near-fieIds on atom chips can also be used for atom interferometry and chip-based atomic clocks.
DOI:10.1109/CLEOE-IQEC.2007.4386685