Quantum teleportation from light beams to vibrational states of a macroscopic diamond

TL;DR

This paper reports the first experimental demonstration of quantum teleportation from light to vibrational states in a macroscopic diamond, achieving high fidelity under ambient conditions, advancing quantum control of large objects.

Contribution

It presents the first successful quantum teleportation from optical beams to the vibrational states of a macroscopic diamond at room temperature.

Findings

Teleportation fidelity of 90.6%

Exceeds classical limit of 2/3

Demonstrates quantum control in macroscopic objects

Abstract

With the recent development of optomechanics, the vibration in solids, involving collective motion of trillions of atoms, gradually enters into the realm of quantum control. Built on the recent remarkable progress in optical control of motional states of diamonds, here we report an experimental demonstration of quantum teleportation from light beams to vibrational states of a macroscopic diamond under ambient conditions. Through quantum process tomography, we demonstrate average teleportation fidelity (90.6+/- 1.0)%, clearly exceeding the classical limit of 2/3. The experiment pushes the target of quantum teleportation to the biggest object so far, with interesting implications for optomechanical quantum control and quantum information science.