期刊
OPTICA
卷 2, 期 12, 页码 1010-1013出版社
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.2.001010
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资金
- Army Research Office (ARO) [DURIP W911NF-12-1-056]
- ARO/ARDA [DAAD19-03-1-0199]
- National Science Foundation (NSF) [PHY-09-03865]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1520991, 1212439] Funding Source: National Science Foundation
Photons have proven to be excellent carriers of quantum information and play essential roles in numerous quantum information processing (QIP) applications. In particular, heralded single-photon sources via spontaneous parametricdown conversion (SPDC) have been a key technology for demonstrating small-scale QIP, yet their low generation efficiency is a critical limitation to furthering the scale-up of optical QIP technology. In order to efficiently overcome the probabilistic nature of SPDC, here we demonstrate time multiplexing for up to 30 time slots of a periodically pumped heralded single-photon source using a switchable low-loss optical storage cavity. We observe a maximum single-photon probability of 38.6 +/- 0.4% in periodic output time windows, corresponding to similar to 6 times enhancement over a nonmultiplexed source but with no increase in the contribution of unwanted multiphoton events. Combining this time-multiplexing technique with a heralded source producing pure single-photon states should enable larger-scale optical QIP systems than previously realized. (C) 2015 Optical Society of America
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