Physics: First teleportation between light and matter

JR Minkel

Jacob Friis Sherson, Hanna Krauter, Rasmus Kjelsmark Olsson +4 more

Eugene Simon Polzik

Hanna Krauter, Jacob Friis Sherson, Eugene Simon Polzik

Abstract Quantum teleportation is an interesting feature of quantum mechanics. Entanglement is used as a link between two remote locations to transfer a quantum state without physically sending it – a process that cannot be realized utilizing merely classical tools. Furthermore it has become evident that teleportation is also an important element of future quantum networks and it can be an ingredient for quantum computation. This article reports for the first time the teleportation from light to atoms. In the experiment discussed, the quantum state of a light beam is transferred to an atomic ensemble. The key element of light‐atom entanglement created via a dispersive interaction lays the foundation for the protocol.

V. V. Ivanov, B. F. Kostenko, В. Д. Кузнецов +2 more

Since its discovery in 1993, quantum teleportation (QT) is a subject for intense theoretical and experimental studies. Experimental demonstration of QT has so far been limited to teleportation of light. In this paper, we propose a new experimental scheme for QT of nuclear matter. We show that the standard technique of nuclear physics experiment could be successfully applied for teleportation of spin states of atomic nuclei. We claim that there are no theoretical prohibitions upon a possibility of a complete Bell measurement, therefore, the implementation of all the four quantum communication channels is at least theoretically possible. A general expression for scattering amplitude of two 1/2-spin

Eugene Simon Polzik

This study demonstrates teleportation between objects of a different nature - light and matter, which respectively represent 'flying' and 'stationary' media. In the present experiment, the quantum state of a few-photon pulse is teleported onto a macroscopic object. The fidelity up to 64% higher than any classical communication can possibly achieve has been demonstrated. An important factor for the implementation of quantum networks is the teleportation distance (0.5 m) between transmitter and receiver.