2017
DOI: 10.1103/physrevlett.118.257402
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Quantum-Dot Single-Photon Sources for Entanglement Enhanced Interferometry

Abstract: Multi-photon entangled states such as 'N00N states' have attracted a lot of attention because of their possible application in high-precision, quantum enhanced phase determination. So far, N00N states have been generated in spontaneous parametric down-conversion processes and by mixing quantum and classical light on a beam splitter. Here, in contrast, we demonstrate super-resolving phase measurements based on two-photon N00N states generated by quantum dot single-photon sources making use of the Hong-Ou-Mandel… Show more

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Cited by 69 publications
(50 citation statements)
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“…The generation of nonclassical light is a fundamental requirement for the operation of quantum photonic devices. For instance, a single photon input is a prerequisite for linear optical quantum computation schemes [1], while the use of entangled photon states may enable sensing with Heisenberg-limited precision in the field of quantum metrology [2,3]. On-demand, single-photon emitters such as quantum dots (QDs) are a proven resource for nonclassical light, enabling the generation of single- [4,5] and two-photon [6] states, as well as the creation of entangled states on chip [7].…”
Section: Takedownmentioning
confidence: 99%
“…The generation of nonclassical light is a fundamental requirement for the operation of quantum photonic devices. For instance, a single photon input is a prerequisite for linear optical quantum computation schemes [1], while the use of entangled photon states may enable sensing with Heisenberg-limited precision in the field of quantum metrology [2,3]. On-demand, single-photon emitters such as quantum dots (QDs) are a proven resource for nonclassical light, enabling the generation of single- [4,5] and two-photon [6] states, as well as the creation of entangled states on chip [7].…”
Section: Takedownmentioning
confidence: 99%
“…While QDs are interesting objects for studying the fundamentals of the carrier-phonon interaction on the nano-scale, they are likewise highly attractive candidates for applications in quantum information technology. In particular, QDs could be used as single [48][49][50][51][52][53][54][55] or pair photon sources [54,[56][57][58][59][60][61][62][63] or in quantum networks [64]. Therefore it is also of high interest to understand the impact of the carrier-phonon interaction on the properties of the photons emitted from a QD.…”
Section: Introductionmentioning
confidence: 99%
“…In fact, polarization entangled photons can be produced now with a fidelity of (97.8 ± 0.5) % . Besides distribution of entanglement, such photon pairs could be used for entanglement‐enhanced interferometry using so called NOON states . Recently, the subsequent emission of a single QD containing an optically inactive, dark exciton was shown to work well as source of photon cluster states …”
Section: Epitaxial Quantum Dotsmentioning
confidence: 99%