W E Moerner 2004 New J. Phys. 6 88 doi:10.1088/1367-2630/6/1/088
Single-photon sources based on single molecules in solids
Focus on Single Photons on DemandW E Moerner
Show affiliationsPart of Focus on Single Photons on Demand
Single molecules in suitable host crystals have been demonstrated to be useful single-photon emitters both at liquid-helium temperatures and at room temperature. The low-temperature source achieved controllable emission of single photons from a single terrylene molecule in p-terphenyl by an adiabatic rapid passage technique. In contrast with almost all other single-molecule systems, terrylene single molecules show extremely high photostability under continuous, high-intensity irradiation. A room-temperature source utilizing this material has been demonstrated, in which fast pumping into vibrational sidebands of the electronically excited state achieved efficient inversion of the emissive level. This source yielded a single-photon emission probability p(1) of 0.86 at a detected count rate near 300 000 photons s−1, with very small probability of emission of more than one photon. Thus, single molecules in solids can be considered as contenders for applications of single-photon sources such as quantum key distribution.
- PACS
- Subjects
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Soft matter, liquids and polymers
Condensed matter: electrical, magnetic and optical
- Dates
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Issue 1 (July 2004)
Received 2 February 2004
Published 29 July 2004
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Single-photon sources based on single molecules in solids
W E Moerner 2004 New J. Phys. 6 88
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