Abstract:
Optical quantum memory is one of the basic elements of quantum information systems. However, the possibilities of its application in such systems sometimes can hardly be estimated by existing methods for its characterization. In this work, the tomography of quantum memory has been implemented as a quantum process in a logical basis. It has been shown that the implemented quantum memory scheme for polarization photon qubits with a high accuracy corresponds to the identity transformation and is promising for application in quantum communication and quantum computing.
This work was supported by the Russian Science Foundation (project no. 19-72-10069) and by the Ministry of Science and Higher Education of the Russian Federation (R&D project no. 121020400113-1, experimental implementation of the quantum memory protocol based on atomic frequency combs).
Citation:
B. I. Bantysh, K. G. Katamadze, Yu. I. Bogdanov, K. I. Gerasimov, M. M. Minnegaliev, R. V. Urmancheev, S. A. Moiseev, “Tomography of optical single-qubit quantum memory”, Pis'ma v Zh. Èksper. Teoret. Fiz., 116:1 (2022), 33–40; JETP Letters, 116:1 (2022), 29–35