On-chip generation and demultiplexing of quantum correlated photons using a silicon-silica monolithic photonic integration platform

Matsuda, Nobuyuki; Karkus, Péter; Nishi, Hidetaka; Tsuchizawa, Tai; Munro, William J.; Takesue, Hiroki; Yamada, Koji

doi:10.1364/oe.22.022831

Cited by 30 publications

(26 citation statements)

References 48 publications

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“…As it is very difficult to integrate interferometric bandpass filters on-chip, alternative solutions have to be found to provide spectral filtering. Matsuda et al have demonstrated the integration of an AWG and a nanowire on the same silicon chip [63]. As the AWG can only provide 30-dB isolation, off-chip bandpass filters and fiber Bragg gratings are still needed to achieve the overall > 100 dB isolation.…”

Section: On-chip Spectral Filtersmentioning

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: On-chip Spectral Filtersmentioning

confidence: 99%

CMOS-compatible photonic devices for single-photon generation

2016

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“…In order to evaluate the quality of the distributed entanglement and assess the effect of the various demultiplexers, we measure the following parameters: the visibility in the natural and the diagonal bases, V = (C max − C min )/(C max + C min ), where C max and C min are respectively the maximum and minimum number of coincidences when one of the polarisation basis angles is changed; the violation of the CHSH inequality, which is quantified by the Bell parameter S; and the brightness (21,27) 0.82 ± 0.04 0.77 ± 0.04 2.25 ± 0.07 216 0.20 0.970 ± 0.053 AWG (23,25) 0.77 ± 0.04 0.74 ± 0.05 2.10 ± 0.10 149 0.064 0.972 ± 0.059 AWG (22,26) 0.79 ± 0.05 0.66 ± 0.05 2.00 ± 0.10 116 0.079 0.906 ± 0.066 DGFT (23,25) 0.79 ± 0.05 0.82 ± 0.05 2.30 ± 0.10 108 0.030 1.000 ± 0.072 DGFT (22,26) 0 B. The results of our measurements are given in Table I.…”

Section: Methodsmentioning

confidence: 99%

“…In this case, the broad bandwidth of photon a) Electronic mail: isabelle.zaquine@telecom-paristech.fr pairs produced by spontaneous parametric down conversion can allow for entanglement distribution to multiple user pairs from a single source using wavelength division multiplexing techniques. This possibility has been explored in several recent works [22][23][24][25][26] , while further work is in progress to integrate these devices 27 and to design flexible optical networks based on such sources 28 . In view of the wide use of wavelength division multiplexing in quantum networks for practical applications, it is essential to be able to properly test the employed demultiplexing technologies and quantify their effect to the quality of the distributed entanglement 29 .…”

Section: Introductionmentioning

confidence: 99%

Multi-user distribution of polarization entangled photon pairs

Trapateau

Ghalbouni

Orieux

et al. 2015

Journal of Applied Physics

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We experimentally demonstrate multi-user distribution of polarization entanglement using commercial telecom wavelength division demultiplexers. The entangled photon pairs are generated from a broadband source based on spontaneous parametric down conversion in a periodically poled lithium niobate crystal using a double path setup employing a Michelson interferometer and active phase stabilisation. We test and compare demultiplexers based on various technologies and analyze the effect of their characteristics, such as losses and polarization dependence, on the quality of the distributed entanglement for three channel pairs of each demultiplexer. In all cases, we obtain a Bell inequality violation, whose value depends on the demultiplexer features. This demonstrates that entanglement can be distributed to at least three user pairs of a network from a single source. Additionally, we verify for the best demultiplexer that the violation is maintained when the pairs are distributed over a total channel attenuation corresponding to 20 km of optical fiber. These techniques are therefore suitable for resource-efficient practical implementations of entanglement-based quantum key distribution and other quantum communication network applications.

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“…Demonstrations of structures that enhance photon generation rates via SFWM include rectangular waveguides [50,[77][78][79], and microring resonators [38,41,43,[80][81][82][83][84][85][86][87][88]; see Figure 5D-F. As SFWM involves the annihilation of two photons, pair generation rates scale with the square of the optical intensity. With standard single-mode waveguide geometries of 500 nm by 220 nm, optical intensities in integrated structures are enhanced by the inverse of the effective mode area [70] with respect to bulk-silicon SFWM pair sources.…”

Section: Photonic Structuresmentioning

confidence: 99%

Large-scale quantum photonic circuits in silicon

et al. 2016

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Quantum information science offers inherently more powerful methods for communication, computation, and precision measurement that take advantage of quantum superposition and entanglement. In recent years, theoretical and experimental advances in quantum computing and simulation with photons have spurred great interest in developing large photonic entangled states that challenge today's classical computers. As experiments have increased in complexity, there has been an increasing need to transition bulk optics experiments to integrated photonics platforms to control more spatial modes with higher fidelity and phase stability. The silicon-on-insulator (SOI) nanophotonics platform offers new possibilities for quantum optics, including the integration of bright, nonclassical light sources, based on the large third-order nonlinearity (χ (3) ) of silicon, alongside quantum state manipulation circuits with thousands of optical elements, all on a single phase-stable chip. How large do these photonic systems need to be? Recent theoretical work on Boson Sampling suggests that even the problem of sampling from ~30 identical photons, having passed through an interferometer of hundreds of modes, becomes challenging for classical computers. While experiments of this size are still challenging, the SOI platform has the required component density to enable low-loss and programmable interferometers for manipulating hundreds of spatial modes.Here, we discuss the SOI nanophotonics platform for quantum photonic circuits with hundreds-to-thousands of optical elements and the associated challenges. We compare SOI to competing technologies in terms of requirements for quantum optical systems. We review recent results on large-scale quantum state evolution circuits and strategies for realizing high-fidelity heralded gates with imperfect, practical systems. Next, we review recent results on silicon photonics-based photonpair sources and device architectures, and we discuss a path towards large-scale source integration. Finally, we review monolithic integration strategies for single-photon detectors and their essential role in on-chip feed forward operations.

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On-chip generation and demultiplexing of quantum correlated photons using a silicon-silica monolithic photonic integration platform

Cited by 30 publications

References 48 publications

CMOS-compatible photonic devices for single-photon generation

CMOS-compatible photonic devices for single-photon generation

Multi-user distribution of polarization entangled photon pairs

Large-scale quantum photonic circuits in silicon

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