Cavity Enhanced Spontaneous Parametric Down-Conversion for the Prolongation of Correlation Time between Conjugate Photons

Ou, Z. Y.; Lu, Yao

doi:10.1103/physrevlett.83.2556

Cited by 262 publications

(244 citation statements)

References 30 publications

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“…To reduce their bandwidth, optical cavity may be used for active filtering [18,19,20,21]. However, multiple cavity modes are resonated simultaneously due to the broad gain linewidth of the forward-wave parametric interaction and the biphotons are generated in multiple longitudinal modes.…”

Section: Introductionmentioning

confidence: 99%

Narrowband Biphotons: Generation, Manipulation, and Applications

Chuu

2015

Engineering the Atom-Photon Interaction

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In this chapter, we review recent advances in generating narrowband biphotons with long coherence time using spontaneous parametric interaction in monolithic cavity with cluster effect as well as in cold atoms with electromagnetically induced transparency. Engineering and manipulating the temporal waveforms of these long biphotons provide efficient means for controlling light-matter quantum interaction at the single-photon level. We also review recent experiments using temporally long biphotons and single photons.

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Section: Introductionmentioning

confidence: 99%

Narrowband Biphotons: Generation, Manipulation, and Applications

Chuu

2015

Engineering the Atom-Photon Interaction

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“…Nonlinearconversion efficiencies may be further improved by employing doubly resonant structures, which concentrate near fields at both the fundamental and multiple (nonlinear) frequencies 6,7,8,9 . This cascaded enhancement is based on recycling both the pump and the nonlinear fields in a cavity, where the latter may also originate from spontaneous vacuum fluctuations 10 . Hybrid optical sources with tailored nonlinear responses, having a broad span of potential applications by themselves 11 , still pose challenges to attempts of employing them as building blocks for the emulation of complex nonlinear dynamics.…”

Section: Introductionmentioning

confidence: 99%

Resonant meta-atoms with nonlinearities on demand

Filonov

Kramer

Kozlov

et al. 2016

Applied Physics Letters

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Nonlinear light-matter interactions and their applications are constrained by properties of available materials. The use of metamaterials opens the way to achieve precise control over electromagnetic properties at a microscopic level, providing new tools for experimental studies of complex nonlinear phenomena in photonics. Here a doubly resonant nonlinear meta-atom is proposed, analyzed and characterized in the GHz spectral range. The underlying structure is composed of a pair of split rings, resonant at both fundamental and nonlinear frequencies. The rings share a varactor diode, which serves as a microscopic source of nonlinearity. Flexible control over the coupling and near-and far-field patterns are reported, favoring the doubly resonant structure over other realizations. Relative efficiencies of the second and third harmonics, generated by the diode, are tailored by dint of the double-ring geometry, providing a guideline for selecting one frequency against another, using the design of the auxiliary structures. The on-demand control over the microscopic nonlinear properties enables developing a toolbox for experimental emulation of complex nonlinear phenomena.Introduction Nonlinear systems feature a variety of phenomena of great significance for both fundamental studies and applications. Being often challenging for detailed mathematical analysis, they may be studied by applying experimental tools and cross-disciplinary concepts. In particular, nonlinear optics, being a celebrated topic by itself 1 , also provides tools for the emulation of cosmological effects 2 , among many others. Nonlinear optical interactions, in the majority of cases, require the use of high light intensities, due to naturally small susceptibilities of available materials. As a result, observation of many effects is extremely challenging and requires highly sophisticated equipment. The concept of metamaterials, however, provides guidelines for constructing artificial media with novel electromagnetic properties 3 . Careful design of resonant characteristics of the unit cells forming a composite material enables tailoring its linear and nonlinear responses alike 4 . Because efficiencies of nonlinear interactions depend on the power of a local electromagnetic field, its enhancement by means of auxiliary structures is beneficial. Various configurations in both optical and radio-frequency (RF) domains were proposed, demonstrating dramatically improved nonlinear responses of the hybrid systems (see review 5 ). Nonlinearconversion efficiencies may be further improved by employing doubly resonant structures, which concentrate near fields at both the fundamental and multiple (nonlinear) frequencies 6,7,8,9 . This cascaded enhancement is based on recycling both the pump and the nonlinear fields in a cavity, where the latter may also originate from spontaneous vacuum fluctuations 10 . Hybrid optical sources with tailored nonlinear responses, having a broad span of potential applications by themselves 11 , still pose challenges to attempt...

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“…By putting the nonlinear crystal inside a cavity, the linewidth of generated photon pairs is limited by the cavity linewidth and the generation probability for the down-converted photons whose frequency matches the cavity mode will be enhanced greatly. Significant progress has been made in this regard [19][20][21][22][23][24][25] . Recently, the generation of single-mode narrow-band polarization entangled source has been reported through cavity-enhanced SPDC [25] , and the storage of such entangled photons has been demonstrated in a cold atomic ensemble [26] In this paper, we also demonstrate a narrow-band polarization-entangled photon pairs at Rb D .…”

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confidence: 99%

“…The drawback of the filtering scheme is that the count rate of photons is inevitably decreased. For solving this problem, cavity-enhanced SPDC has been developed to prepare the narrow-band photon pairs [19] . By putting the nonlinear crystal inside a cavity, the linewidth of generated photon pairs is limited by the cavity linewidth and the generation probability for the down-converted photons whose frequency matches the cavity mode will be enhanced greatly.…”

mentioning

confidence: 99%