Elimination of Noise in Optically Rephased Photon Echoes
arXiv:2107.09857 · doi:10.1038/s41467-021-24679-4
Abstract
Photon echo is a fundamental tool for the manipulation of electromagnetic fields. Unavoidable spontaneous emission noise is generated in this process due to the strong rephasing pulse, which limits the achievable signal-to-noise ratio and represents a fundamental obstacle towards their applications in the quantum regime. Here we propose a noiseless photon-echo protocol based on a four-level atomic system. We implement this protocol in a Eu3+:Y2SiO5bcrystal to serve as an optical quantum memory. A storage fidelity of 0.952 is obtained for time-bin qubits encoded with single-photon-level coherent pulses, which is far beyond the maximal fidelity achievable using the classical measure-and-prepare strategy. In this work, the demonstrated noiseless photon-echo quantum memory features spin-wave storage, easy operation and high storage fidelity, which should be easily extended to other physical systems.
References in corpus (6)
- Supplementary information for "Quantum supremacy using a programmable superconducting processor"
- A Single-Atom Quantum Memory
- A solid state spin-wave quantum memory for time-bin qubits
- Coherent spin control at the quantum level in an ensemble-based optical memory
- Storing quantum information in spins and high-sensitivity ESR
- A photon-pair source with controllable delay based on shaped inhomogeneous broadening of rare-earth doped solids
Cited by in corpus (20)
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