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Updated: Feb 9, 2026
07:56
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
9.0K
Deterministic Remote Entanglement of Superconducting Circuits through Microwave Two-Photon Transitions
P Campagne-Ibarcq1, E Zalys-Geller1, A Narla1
1Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA.
Physical Review Letters
|June 5, 2018
Summary
Researchers demonstrate deterministic entanglement of two remote transmon qubits using a traveling photon. This achievement is crucial for building large-scale quantum networks by enabling entanglement between distant quantum systems.
Area of Science:
- Quantum Information Science
- Quantum Networking
- Quantum Computing
Background:
- Large-scale quantum networks require entanglement of distant systems.
- Entanglement is achieved via entangling gates between stationary and flying qubits.
- Flying qubits act as quantum buses for remote entanglement.
Purpose of the Study:
- To deterministically entangle two remote transmon qubits.
- To establish a method for creating entanglement in quantum information processing networks.
- To investigate the fidelity of remote entanglement using photon-mediated interactions.
Main Methods:
- Utilizing Raman stimulated emission and absorption.
- Employing a traveling photon wave packet as a quantum bus.
- Performing entangling gates between two remote transmon qubits.
Main Results:
- Achieved deterministic entanglement of two remote transmon qubits.
- Obtained a Bell state fidelity of 73%.
- Identified transmission line losses and qubit decoherence as primary factors limiting fidelity.
Conclusions:
- Demonstrated a viable method for remote quantum entanglement.
- The technique is a key step towards scalable quantum information processing networks.
- Further improvements in coherence and loss reduction are necessary for higher fidelities.
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