Photon echo quantum RAM integration in quantum computer

TL;DR

This paper proposes an efficient method for integrating multi-qubit echo quantum memory into quantum computers using atomic ensembles in a cavity, enabling reversible photon qubit transfer and advancing solid-state quantum computing.

Contribution

It introduces a novel physical scheme for integrating multi-qubit quantum memory with optimized conditions and specific temporal modes for reversible photon transfer.

Findings

Optimal conditions for quantum memory integration identified

Specific temporal modes enable perfect reversible photon transfer

Results facilitate realization of full-scale solid-state quantum computing

Abstract

We have analyzed an efficient integration of the multi-qubit echo quantum memory into the quantum computer scheme on the atomic resonant ensembles in quantum electrodynamics cavity. Here, one atomic ensemble with controllable inhomogeneous broadening is used for the quantum memory node and other atomic ensembles characterized by the homogeneous broadening of the resonant line are used as processing nodes. We have found optimal conditions for efficient integration of multi-qubit quantum memory modified for this analyzed physical scheme and we have determined a specified shape of the self temporal modes providing a perfect reversible transfer of the photon qubits between the quantum memory node and arbitrary processing nodes. The obtained results open the way for realization of full-scale solid state quantum computing based on using the efficient multi-qubit quantum memory.