Quantum Optics and Implementation of Quantum Information Technology

S. Ya. Kilin

Rohit K. Ramakrishnan, Shafeek A. Samad, Kande Archana +3 more

Quantum communication or more specifically quantum information processing is considered as the future of information science and technology. In this paper we propose a scheme to implement quantum communication at the device level using integrated optics. We implement the quantum communication protocol BB84, in a waveguide based circuit using integrated optics. We also propose a high dimensional quantum key distribution method implementation using integrated optics. In the earlier one polarized photons are used as the carriers of quantum information, while in second one electromagnetic modes in the waveguide are used to carry quantum information. The high dimensional quantum communication method is used to increase the information content of protocol thus increasing on the data rates. This is done by encoding into a larger state space. We have used electromagnetic modes for encoding since the polarization method is not efficient to carry information in a larger state space.

Donghwa Lee, Yong‐Su Kim

We outline ongoing endeavors in the development of quantum information processing technology utilizing quantum optics. We highlight the distinctive attributes of quantum optical platforms and explore two distinct approaches: discrete variable and continuous variable quantum optics, for the realization of quantum information processing. In addition, we showcase recent achievements in the implementation of quantum simulators, aiming to address practical challenges using today’s available technologies.

J. I. Cirac, L.-M. Duan, Dieter Jaksch +1 more

N. J. Lambert, Alfredo Rueda, Florian Sedlmeir +1 more

Spatially separated quantum technologies will need to communicate using optical channels, rather than at microwave frequencies which correspond to the energy scales of superconducting qubits. The theoretical description underlying the different physical implementations of up-conversion is the beam-splitter Hamiltonian. A classical driving field is depicted as a Gaussian field distribution and the quantized pulses are shown in red (microwave) and blue (optical). In article number 1900077, Florian Sedlmeir, Harald G. L. Schwefel, and co-workers review current experimental implementations.

Pieter Kok, Brendon W. Lovett