Single-source chip-based frequency comb enabling extreme parallel data transmission

Hu, Hao; Ros, Francesco Da; Pu, Minhao; Ye, Feihong; Ingerslev, Kasper; Silva, Edson Porto da; Nooruzzaman, Md.; Amma, Yoshimichi; Sasaki, Y.; Mizuno, Takayuki; Miyamoto, Yutaka; Ottaviano, Luisa; Semenova, Elizaveta; Guan, Pengyu; Zibar, Darko; Galili, Michael; Yvind, Kresten; Morioka, Toshio; Oxenløwe, Leif Katsuo

doi:10.1038/s41566-018-0205-5

Cited by 200 publications

(136 citation statements)

References 32 publications

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“…Multicore fibre for quantum communications Space division multiplexing (SDM) in optical fibre, i.e., communication through distinct and parallel cores/modes in multicore and few-modes fibres, will play a fundamental role in future classical communications, both for solving the future capacity crunch and for reducing the overall power budget, thus decreasing the total power consumption [25][26][27]. As reported in Figure 1 a), through SDM the achievable rate of an N-core MCF corresponds theoretically to N times the achievable rate of a single mode fibre [28].…”

Section: Resultsmentioning

confidence: 99%

Boosting the secret key rate in a shared quantum and classical fibre communication system

et al. 2019

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During the last 20 years, the advance of communication technologies has generated multiple exciting applications. However, classical cryptography, commonly adopted to secure current communication systems, can be jeopardized by the advent of quantum computers. Quantum key distribution (QKD) is a promising technology aiming to solve such a security problem. Unfortunately, current implementations of QKD systems show relatively low key rates, demand low channel noise and use ad hoc devices. In this work, we picture how to overcome the rate limitation by using a 37-core fibre to generate 2.86 Mbit s −1 per core that can be space multiplexed into the highest secret key rate of 105.7 Mbit s −1 to date. We also demonstrate, with off-the-shelf equipment, the robustness of the system by co-propagating a classical signal at 370 Gbit s −1 , paving the way for a shared quantum and classical communication network. * dabac@fotonik.dtu.dk, bdali@fotonik.dtu.dk These authors contributed equally to this work 1 arXiv:1911.05360v1 [quant-ph] 13 Nov 2019 of integration with the bright signals used in classical communications [17][18][19][20][21][22][23]. In this work, we show how to overcome the low rate and compatibility limitations by exploiting a 37-core multicore fibre (MCF) as a technology for quantum communications [24]. This technology allows for efficient key generation, enabling the highest secret key rate presented to date. Moreover, we co-propagate in all the 37 cores simultaneously a high-speed classical signal, showing that the quantum communication is only weakly perturbed by it, paving the way for a full-fleshed implementation in current communication infrastructures.

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Section: Resultsmentioning

confidence: 99%

Boosting the secret key rate in a shared quantum and classical fibre communication system

et al. 2019

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“…First, introducing other degrees of freedom of light, e.g. path or frequency, could contribute to encoding information [38,39] and realizing larger-cycle rotations [40]. Second, the design of multiple interferometers is likely to be further optimized.…”

Section: Discussion On Higher-dimensional Casesmentioning

confidence: 99%

Implementation of quantum permutation algorithm with classical light

Zhang

Wang

et al. 2019

J. Phys. Commun.

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We report the experimental implementation of quantum permutation algorithm using polarization and orbital angular momentum of the classical optical beam. The easy-handling optical setup to realize all eight cyclic permutation transformations for an input four-dimensional system has been constructed. The two-to-one speed-up ratio to determine the parity of each permutation has been demonstrated. Moreover, we have theoretically discussed the extension to the case with eight elements, and the limitations on the generalization of our proposal to higher-dimensional cases. Our scheme exhibits outstanding stability and demonstrates that optical quantum computation is possible using classical states of light.

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“…Chip-scale comb sources have been used in a variety of WDM transmission experiments, relying on different comb generation approaches and covering a wide range of data rates, channel counts, and line spacings [5][6][7][8][9][10][14][15][16][17][18][19]. A particularly promising option to generate frequency combs in chip-scale devices relies on Kerr comb generation in micro-ring resonators [27].…”

Section: Soliton Kerr Combs For Massively Parallel Wdm Communicationsmentioning

confidence: 99%

Performance of chip-scale optical frequency comb generators in coherent WDM communications

et al. 2020

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Optical frequency combs have the potential to become key building blocks of optical communication subsystems. The strictly equidistant, narrow-band spectral lines of a frequency comb can serve both as carriers for massively parallel data transmission and as local oscillator for coherent reception. Recent experiments have demonstrated the viability of various chip-based comb generator concepts for communication applications, offering transmission capacities of tens of Tbit/s. Here, we investigate the influence of the comb line power and of the carrier-to-noise power ratio on the performance of a frequency comb in a WDM system. We distinguish two regimes of operation depending on whether the comb source or the transmission link limits the performance of the system, i.e., defines the link reach, restricts the choice of modulation format and sets the maximum symbol rate. Finally, we investigate the achievable OSNR and channel capacity when using the tones of a soliton Kerr frequency comb as multi-wavelength carriers for WDM systems.

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Single-source chip-based frequency comb enabling extreme parallel data transmission

Cited by 200 publications

References 32 publications

Boosting the secret key rate in a shared quantum and classical fibre communication system

Boosting the secret key rate in a shared quantum and classical fibre communication system

Implementation of quantum permutation algorithm with classical light

Performance of chip-scale optical frequency comb generators in coherent WDM communications

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