What are single photons good for?
arXiv:1202.0493 · doi:10.1080/09500340.2012.687500
Abstract
In a long-held preconception, photons play a central role in present-day quantum technologies. But what are sources producing photons one by one good for precisely? Well, in opposition to what many suggest, we show that single-photon sources are not helpful for point to point quantum key distribution because faint laser pulses do the job comfortably. However, there is no doubt about the usefulness of sources producing single photons for future quantum technologies. In particular, we show how single-photon sources could become the seed of a revolution in the framework of quantum communication, making the security of quantum key distribution device independent or extending quantum communication over many hundreds of kilometers. Hopefully, these promising applications will provide a guideline for researchers to develop more and more efficient sources, producing narrowband, pure and indistinguishable photons at appropriate wavelengths.
6 pages, 5 figures, submitted to the special issue of the Journal of Modern Optics on the Single-Photon Workshop 2011
References in corpus (12)
- Device-independent security of quantum cryptography against collective attacks
- Free-Space distribution of entanglement and single photons over 144 km
- Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories
- Proposal for Implementing Device-Independent Quantum Key Distribution based on a Heralded Qubit Amplification
- How good must single photon sources and detectors be for efficient linear optical quantum computation?
- Long-Distance Entanglement Distribution with Single-Photon Sources
- High-fidelity transmission of entanglement over a high-loss freespace channel
- Robust and Efficient Quantum Repeaters with Atomic Ensembles and Linear Optics
- Single-photon device requirements for operating linear optics quantum computing outside the post-selection basis
- Quantum frequency downconversion experiment
- Coherent frequency-down-conversion interface for quantum repeaters
- Linear optical quantum computation with imperfect entangled photon-pair sources and inefficient non-photon-number-resolving detectors
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