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Experimental quantum teleportation of propagating microwaves
Kirill G Fedorov1,2, Michael Renger1,2, Stefan Pogorzalek1,2
1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany.
Science Advances
|December 22, 2021
Summary
Researchers achieved quantum teleportation of microwave states over 0.42 meters, preserving quantum information. This breakthrough advances secure quantum communication channels for superconducting quantum processors.
Area of Science:
- Quantum Information Science
- Quantum Communication
- Superconducting Circuits
Background:
- Quantum communication offers secure information exchange via quantum states.
- Advancements in superconducting quantum computation necessitate quantum communication channels for distributed processors.
Purpose of the Study:
- To demonstrate unconditional quantum teleportation of microwave states.
- To establish quantum communication channels for superconducting quantum processors.
Main Methods:
- Utilizing two-mode squeezing and analog feedforward.
- Performing quantum teleportation over a macroscopic distance (0.42 m).
Main Results:
- Achieved a teleportation fidelity of 0.689 ± 0.004.
- Exceeded the no-cloning threshold, preserving the quantum nature of states.
Conclusions:
- Demonstrated successful quantum teleportation of microwave coherent states.
- Paved the way for unconditionally secure microwave quantum communication.
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