Journal
PHYSICAL REVIEW LETTERS
Volume 117, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.023602
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Categories
Funding
- EPSRC
- ERC
- BBOI
- PHORBITECH
- QUANTIP
- U.S. Army Research Office (ARO) [W911NF-14-1-0133]
- U.S. Air Force Office of Scientific Research (AFOSR)
- Centre for Nanoscience and Quantum Information (NSQI)
- FP7 Marie Curie International Incoming Fellowship
- Royal Society Wolfson Merit Award
- Royal Academy of Engineering Chair in Emerging Technologies
- German Research Foundation (DFG) [RU 635]
- Leverhulme Trust Early Career Fellowship
- EPSRC through the quantum technologies programme (NQIT hub)
- EPSRC [EP/L024020/1, EP/M024385/1, EP/J017175/1, EP/M013243/1, EP/K021931/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1507931, EP/J017175/1, EP/K021931/1, 1093300, 1230322, EP/L024020/1, EP/M013243/1, EP/M024385/1, 1094068, 1515429] Funding Source: researchfish
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We demonstrate quantum logic using narrow linewidth photons that are produced with an a priori nonprobabilistic scheme from a single Rb-87 atom strongly coupled to a high-finesse cavity. We use a CONTROLLED-NOT gate integrated into a photonic chip to entangle these photons, and we observe nonclassical correlations between photon detection events separated by periods exceeding the travel time across the chip by 3 orders of magnitude. This enables quantum technology that will use the properties of both narrow-band single photon sources and integrated quantum photonics.
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