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Related Experiment Video

Updated: Apr 26, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Quantum information. Unconditional quantum teleportation between distant solid-state quantum bits.

W Pfaff¹, B J Hensen¹, H Bernien¹

¹Kavli Institute of Nanoscience Delft, Delft University of Technology, Post Office Box 5046, 2600 GA Delft, Netherlands.

Science (New York, N.Y.)

|August 2, 2014

Summary

This summary is machine-generated.

We achieved quantum teleportation between diamond spin qubits over 3 meters, a major step for quantum networks. This demonstrates robust quantum information transfer for future quantum communication and computing.

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Published on: May 30, 2014

Area of Science:

Quantum Information Science
Quantum Technology
Quantum Communication

Background:

Robust quantum information transfer between qubit registers is crucial for quantum technologies.
Diamond spin qubits offer long-lived quantum states suitable for quantum networks.

Purpose of the Study:

To demonstrate unconditional quantum state teleportation between distant diamond spin qubits.
To establish the viability of diamond spin qubits for quantum networks and computing.

Main Methods:

Photon-mediated heralded entanglement between distant electron spins.
Encoding the source qubit in a single nuclear spin.
Deterministic Bell-state measurement with real-time feed-forward.

Main Results:

Successful unconditional quantum teleportation of arbitrary states between diamond spin qubits separated by 3 meters.
Achieved average state fidelity exceeding the classical limit.
Demonstrated deterministic teleportation upon each attempt.

Conclusions:

Diamond spin qubits are a promising platform for quantum networks.
The demonstrated teleportation advances quantum communication and network-based quantum computing.