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Calcium Imaging in Freely Behaving Caenorhabditis elegans with Well-Controlled, Nonlocalized Vibration
Published on: April 29, 2021
Nonlocal Josephson Effect in Andreev Molecules
J-D Pillet1,2, V Benzoni1, J Griesmar1
1Φ0, JEIP, USR 3573 CNRS , Collège de France, PSL University , 11, place Marcelin Berthelot, 75231 Paris Cedex 05, France.
We introduce the Andreev molecule, an artificial quantum system of coupled Josephson junctions. This system exhibits nonlocal supercurrent control, enabling novel quantum applications.
Area of Science:
- Quantum physics
- Condensed matter physics
- Artificial quantum systems
Background:
- Josephson junctions are key components in superconducting electronics.
- Understanding quantum coupling in artificial systems is crucial for technological advancement.
Purpose of the Study:
- To propose and theoretically describe the Andreev molecule, a novel artificial quantum system.
- To explore the unique coupling mechanism and consequences of hybridized Andreev Bound States.
Main Methods:
- Utilizing the Bogolubov-de-Gennes formalism.
- Deriving the energy spectrum and nonlocal current-phase relations.
- Analyzing the hybridization of Andreev Bound States.
Main Results:
- Demonstrated nonlocal supercurrent dependence between coupled Josephson junctions.
- Derived the energy spectrum and nonlocal current-phase relation for arbitrary separations.
- Showcased the potential for creating a phi-junction.
Conclusions:
- The Andreev molecule offers a new platform for quantum phenomena.
- Potential applications include quantum information processing, metrology, and sensing.
- Experimental verification of the predicted nonlocal effects is proposed.
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