Efficient generation of correlated photon pairs in a microstructure fiber

Fan, Jingyun; Migdall, Alan L.; Wang, Lijun

doi:10.1364/ol.30.003368

Cited by 114 publications

(93 citation statements)

References 20 publications

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“…The later experiments follow earlier work in which χ 3 non linearity was used to generate photon pairs in conventional optical fibers [12,13,14] and photonic crystal fibers [15,16]. In fiber experiments Raman scattering is often an important source of noise [13] whereas it should be negligible in SOI waveguides (see however below) as Raman gain is restricted to a narrow bandwidth far detuned (15.6 THz.)…”

Section: Introductionmentioning

confidence: 82%

Self-pulsing and chaos in short chains of coupled nonlinear microcavities

2009

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Silicon waveguides are promising χ 3 -based photon pair sources. Demonstrations so far have been based on picosecond pulsed lasers. Here, we present the first investigation of photon pair generation in silicon waveguides in a continuous regime. The source is characterized by coincidence measurements. We uncover the presence of unexpected noise which had not been noticed in earlier experiments. Subsequently, we present advances towards integration of the photon pair source with other components on the chip. This is demonstrated by photon pair generation in a Sagnac loop interferometer and inside a micro-ring cavity. Comparison with the straight waveguide shows that these are promising avenues for improving the source. In particular photon pair generation in the micro-ring cavity yields a source with a spectral width of approximately 150 pm resulting in a spectral brightness increased by more than 2 orders of magnitude.

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Section: Introductionmentioning

confidence: 82%

Self-pulsing and chaos in short chains of coupled nonlinear microcavities

2009

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“…Such correlated photon pairs are useful for applications in quantum information processing. Indeed, spontaneous FWM in silica fibers have been used for this purpose successfully in the past few years [167][168][169][170].…”

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confidence: 99%

Nonlinear optical phenomena in silicon waveguides: modeling and applications

Lin¹,

Painter²,

Agrawal³

2007

Opt. Express

856

699

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Several kinds of nonlinear optical effects have been observed in recent years using silicon waveguides, and their device applications are attracting considerable attention. In this review, we provide a unified theoretical platform that not only can be used for understanding the underlying physics but should also provide guidance toward new and useful applications. We begin with a description of the third-order nonlinearity of silicon and consider the tensorial nature of both the electronic and Raman contributions. The generation of free carriers through two-photon absorption and their impact on various nonlinear phenomena is included fully within the theory presented here. We derive a general propagation equation in the frequency domain and show how it leads to a generalized nonlinear Schrödinger equation when it is converted to the time domain. We use this equation to study propagation of ultrashort optical pulses in the presence of self-phase modulation and show the possibility of soliton formation and supercontinuum generation. The nonlinear phenomena of cross-phase modulation and stimulated Raman scattering are discussed next with emphasis on the impact of free carriers on Raman amplification and lasing. We also consider the four-wave mixing process for both continuous-wave and pulsed pumping and discuss the conditions under which parametric amplification and wavelength conversion can be realized with net gain in the telecommunication band. 1678-1687 (2006). 4. R. A. Soref, S. J. Emelett, and W. R. Buchwald, "Silicon waveguided components for the long-wave infrared region," J. Opt. A: Pure Appl. Opt. 8, 840-848 (2006). 5. M. Dinu, F. Quochi, and H. Garcia, "Third-order nonlinearities in silicon at telecom wavelengths," Appl. Phys.Lett. 82, 2954-2956 (2003). 6. R. Claps, D. Dimitropoulos, V. Raghunathan, Y. Han, and B. Jalali, "Observation of stimulated Raman amplification in silicon waveguides," Opt. Express 11, 1731-1739 (2003). 7. H. K. Tsang, C. S. Wong, T. K. Liang, I. E. Day, S. W. Roberts, A. Harpin, J. Drake, and M. Asghari, "Optical dispersion, two-photon absorption, and self-phase modulation in silicon waveguides at 1.5 μm wavelength," Appl. Phys. Lett. 80, 416-418 (2002 3685-3697 (1973). 109. T. R. Hart, R. L. Aggarwal, and B. Lax, "Temperature dependence of Raman scattering in silicon," Phys. Rev. B 1, 638-642 (1970). 110. A. Zwick and R. Carles, "Multiple-order Raman scattering in crystalline and amorphous silicon," Phys. Rev. B 48, 6024-6032 (1993). 111. R. Loudon, "The Raman effect in crystals," Adv. Phys. 50, 813-864 (2001). 112. J. R. Sandercock, "Brillouin-scattering measurements on silicon and germanium," Phys. Rev. Lett. 28, 237-240 (1972). 113. M. Dinu, "Dispersion of phonon-assisted nonresonant third-order nonlinearities," IEEE J. Quantum Electron.39, 1498-1503 (2003).

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“…In fact, other methods have been developed in recent years that are capable of generating more photon pairs under moderate pump power, such as sources obtained using spontaneous processes in waveguide structures 15 or photonic crystal fibres 16,17 . More recently, an ultraviolet enhancement cavity suitable for multi-photon experiments was implemented by Roland Krischek et al 18 This system can provide greater than 7 W ultraviolet pump power for SPDC processes, which also makes the generation of more photon pairs possible.…”

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confidence: 99%

Experimental generation of an eight-photon Greenberger–Horne–Zeilinger state

et al. 2011

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multi-partite entangled states are important for developing studies of quantum networking and quantum computation. To date, the largest number of particles that have been successfully manipulated is 14 trapped ions. Yet in quantum information science, photons have particular advantages over other systems. In particular, they are more easily transportable qubits and are more robust against decoherence. Thus far, the largest number of photons to have been successfully manipulated in an experiment is six. Here we demonstrate, for the first time, an eight-photon Greenberger-Horne-Zeilinger state with a measured fidelity of 0.59 ± 0.02, which proved the presence of genuine eight-partite entanglement. This is achieved by improving the photon detection efficiency to 25% with a 300-mW pump laser. With this state, we also demonstrate an eight-party quantum communication complexity scenario. This eight-photon entangled-state source may be useful in one-way quantum computation, quantum networks and other quantum information processing tasks.

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Efficient generation of correlated photon pairs in a microstructure fiber

Cited by 114 publications

References 20 publications

Self-pulsing and chaos in short chains of coupled nonlinear microcavities

Self-pulsing and chaos in short chains of coupled nonlinear microcavities

Nonlinear optical phenomena in silicon waveguides: modeling and applications

Experimental generation of an eight-photon Greenberger–Horne–Zeilinger state

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