Towards On-Chip Integrated Optical Quantum Frequency Combs
arXiv:1710.00500 · doi:10.1515/nanoph-2016-0029
Abstract
Recent development in quantum photonics allowed to start the process of bringing photonic-quantum-based systems out of the lab into real world applications. As an example, devices for the exchange of a cryptographic key secured by the law of quantum mechanics are currently commercially available. In order to further boost this process, the next step is to migrate the results achieved by means of bulky and expensive setups to miniaturized and affordable devices. Integrated quantum photonics is exactly addressing this issue. In this paper we briefly review the most recent advancements in the generation of quantum states of light (at the core of quantum cryptography and computing) on chip. In particular, we focus on optical microcavities, as they can offer a solution to the issue of low efficiency (low number of photons generated) typical of the materials mostly used in integrated platforms. In addition, we show that specifically designed microcavities can also offer further advantages, such as compatibility with existing telecom standard (thus allowing to exploit the existing fiber network) and quantum memories (necessary in turns to extend the communication distance), as well as longitudinal multimode character. This last property (i.e. the increased dimensionality necessary for describing the quantum state of a photon) is achieved thanks to the generating multiple photon pairs on a frequency comb corresponding to the microcavity resonances. Further achievements include the possibility to fully exploit the polarization degree of freedom also for integrated devices. These results pave the way to the generation of integrated quantum frequency combs, that in turn may find application as quantum computing platform.
16 pages, 9 figures, 53 references
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- Comparison of photonic transversal RF spectral filters based on different optical microcombs
- Chip-based photon quantum state sources using nonlinear optics
- High bandwidth temporal RF photonic signal processing with Kerr micro-combs: integration, fractional differentiation and Hilbert transforms
- Applications of integrated optical microcombs
- Integral order photonic RF and microwave signal processors based on soliton crystal Kerr micro-combs
- Photonic Microwave and RF Channelizers using Kerr Micro-combs
- Review: Graphene oxide 2D thin films for high performance nonlinear integrated photonics
- Sagnac interference in integrated photonics for reflection mirrors, gyroscopes, filters, and wavelength interleavers
- Spectral Shaping with Integrated Self-Coupled Sagnac Loop Reflectors
- Photo-thermal tuning of graphene oxide coated integrated optical waveguides
- Ultra-high bandwidth fiber-optic data transmission with a single chip source
- Submegahertz spectral width photon pair source based on fused silica microspheres
- High Performance Optical Filters Using Three Waveguide Coupled Sagnac Loop Reflectors
- Massive-mode polarization entangled biphoton frequency comb
- Emerging applications of integrated optical microcombs for analogue RF and microwave photonic signal processing
- High 3rd Order Optical Kerr Nonlinearity of PdSe2 Di-chalcogenide 2D Films for Nonlinear Photonic Chips
- Graphene oxide 2D films integrated with nanowires and ring resonators for enhanced nonlinear optics
- Adding Photonic Entanglement to Superradiance by Using Multilevel Atoms