Fiber-based telecom-band degenerate-frequency source of entangled photon pairs

Lee, Kim Fook; Cui, Liang; Kumar, Prem

doi:10.1364/ol.31.002798

Cited by 61 publications

(47 citation statements)

References 7 publications

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“…Frequency-degenerate photon-pair generation via SFWM has been demonstrated in optical fibers previously [48,49]. Very recently, several groups including us have reported the on-chip demonstrations based on silicon nanowires [17], PhC slow-light waveguides [39], and microrings [38,40].…”

Section: Frequency-degenerate Photon Pair Generationmentioning

confidence: 99%

CMOS-compatible photonic devices for single-photon generation

2016

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Sources of single photons are one of the key building blocks for quantum photonic technologies such as quantum secure communication and powerful quantum computing. To bring the proof-of-principle demonstration of these technologies from the laboratory to the real world, complementary metal-oxide-semiconductor (CMOS)-compatible photonic chips are highly desirable for photon generation, manipulation, processing and even detection because of their compactness, scalability, robustness, and the potential for integration with electronics. In this paper, we review the development of photonic devices made from materials (e.g., silicon) and processes that are compatible with CMOS fabrication facilities for the generation of single photons.

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Section: Frequency-degenerate Photon Pair Generationmentioning

confidence: 99%

CMOS-compatible photonic devices for single-photon generation

2016

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“…Heralded sources using guided media have one key advantage that the photons are generated in a single welldefined spatial mode, as opposed to a mixture of modes in the case of single-emitter sources. Single photons produced in mono-mode fibers via heralding, in particular, can be losslessly coupled into standard telecom fibers [18]. They thus have the potential to be a valuable resource for networked quantum information processing capable of harnessing the existing fiber-based telecommunications infrastructure.…”

Section: Introductionmentioning

confidence: 99%

“…For example, a common method for achieving high purity is to apply narrowband spectral filtering to the signal photons before they are detected [18][19][20][21][22]. This method rejects most of the usable pairs, resulting in a low singlephoton production rate.…”

Section: Introductionmentioning

confidence: 99%

Optimized heralding schemes for single photons

2011

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A major obstacle to a practical, heralded source of single photons is the fundamental trade-off between high heralding efficiency and high production rate. To overcome this difficulty, we propose applying sequential spectral and temporal filtering on the signal photons before they are detected for heralding. Based on a multimode theory that takes into account the effect of simultaneous multiple photon-pair emission, we find that these filters can be optimized to yield both a high heralding efficiency and a high production rate. While the optimization conditions vary depending on the underlying photon-pair spectral correlations, all correlation profiles can lead to similarly high performance levels when optimized filters are employed. This suggests that a better strategy for improving the performance of heralded single-photon sources is to adopt an appropriate measurement scheme for the signal photons, rather than tailoring the properties of the photon-pair generation medium.

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“…In-fiber generation of polarization-entangled photon pairs has been demonstrated in dispersion-shifted fiber [1] and photonic crystal fiber [2] by exploiting spontaneous four-wave mixing, a 3 process. In both cases, the downconverted photons are co-polarized with the pump and polarization entanglement is only achieved through additional steps such as employing a Sagnac loop and polarizing beam splitter [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…In both cases, the downconverted photons are co-polarized with the pump and polarization entanglement is only achieved through additional steps such as employing a Sagnac loop and polarizing beam splitter [1,2].…”

Section: Introductionmentioning

confidence: 99%