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Ultra-low-noise room-temperature quantum memory for polarization qubits
- Source :
- Phys. Rev. Applied 8, 034023 (2017)
- Publication Year :
- 2015
-
Abstract
- Here we show an ultra-low noise regime of operation in a simple quantum memory in warm Rb atomic vapor. By modelling the quantum dynamics of four-level room temperature atoms, we achieve fidelities >90% for single-photon level polarization qubits, clearly surpassing any classical strategy exploiting the non-unitary memory efficiency. This is the first time such important threshold has been crossed with a room temperature device. Additionally we also show novel experimental techniques capable of producing fidelities close to unity. Our results demonstrate the potential of simple, resource-moderate experimental room temperature quantum devices.<br />Comment: 5 pages, 5 figures
- Subjects :
- Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Applied 8, 034023 (2017)
- Publication Type :
- Report
- Accession number :
- edsarx.1512.07374
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevApplied.8.034023