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Employing tight-binding approximation we derive a transfer matrix formalism for one-dimensional single photon transport through a composite scattering center, which consists of parallel connected resonator optical waveguides. By solving the…

Quantum Physics · Physics 2017-03-29 Yu Jiang , M. Lozada-Cassou

When light propagates through a complex medium, such as a multimode optical fibre (MMF), the spatial information it carries is scrambled. In this work we experimentally demonstrate an all-optical strategy to unscramble this light again. We…

Optics · Physics 2023-07-19 Hlib Kupianskyi , Simon A. R. Horsley , David B. Phillips

The capacity of optical communication channels can be increased by space division multiplexing in structured optical fibers. Radial core optical fibers allows for the propagation of twisted light--eigenmodes of orbital angular momentum,…

Quantum Physics · Physics 2021-09-08 G. Cañas , E. S. Gómez , E. Baradit , G. Lima , S. P. Walborn

Developing a quantum light source that carries more than one bit per photon is pivotal for expanding quantum information applications. Characterizing a high-dimensional multiple-degree-of-freedom source at the single-photon level is…

Quantum Physics · Physics 2025-05-09 Dong Beom Kim , Xiye Hu , Alfred B. U'Ren , Karina Garay-Palmett , Virginia O. Lorenz

We investigate the single-photon transport properties in a double-waveguide quantum electrodynamic system. We force the energy degeneracy of the collective states by adjusting the direct coupling strength between the two giant atoms. Our…

Quantum Physics · Physics 2024-07-10 Daqiang Bao , Zhirong Lin

We propose a method for implementing automated state transformations on single-photon multipath qudits encoded in a one-dimensional transverse spatial domain. It relies on transferring the encoding from this domain to the orthogonal one by…

The ability to manipulate single photons is of critical importance for fundamental quantum optics studies and practical implementations of quantum communications. While extraordinary progresses have been made in controlling spatial,…

We demonastrate experimental technique for generating spatially single-mode broadband biphoton field. The method is based on dispersive optical element which precisely tailors the structure of type-I SPDC frequency angular spectrum in order…

Quantum Physics · Physics 2015-08-19 K. G. Katamadze , N. A. Borshchevskaya , I. V. Dyakonov , A. V. Paterova , S. P. Kulik

The ubiquity of optical communications is due in large part to the advent of the optical fibre, which allows for flexible and efficient routing of light-encoded information. Used as serial channels, single fibres have also been shown to be…

Quantum Physics · Physics 2018-08-23 J. Hordell , D. Benedicto-Orenes , P. G. Petrov , A. U. Kowalczyk , G. Barontini , V. Boyer

Wavefront shaping enables control of classical light through scattering media. Extending these techniques to spatially entangled photons promises new quantum applications, but their fundamental limits, especially when both photons scatter,…

Quantum Physics · Physics 2025-05-06 Ronen Shekel , Sébastien M. Popoff , Yaron Bromberg

We propose a new method for converting single microwave photons to single optical sideband photons based on spinful impurities in magnetic materials. This hybrid system is advantageous over previous proposals because (i) the implementation…

Integrated quantum optics has drastically reduced the size of table-top optical experiments to the chip-scale, allowing for demonstrations of large-scale quantum information processing and quantum simulation. However, despite these…

Quantum Physics · Physics 2017-01-27 Aseema Mohanty , Mian Zhang , Avik Dutt , Sven Ramelow , Paulo Nussenzveig , Michal Lipson

Multimode fibers are widely explored for optical communication, imaging and sensing applications. The interference of fiber guided modes generates a speckle pattern, which has been used for high-precision spectroscopy, temperature, and…

Optics · Physics 2020-04-16 Wen Xiong , Shai Gertler , Hasan Yilmaz , Hui Cao

Optical communication systems are able to send the information from one user to another in light beams that travel through the free space or optical fibers, therefore how to send larger amounts of information in smaller periods of time is a…

Quantum Physics · Physics 2018-03-07 Wen-Tan Fang , Yin-Hai Li , Zhi-Yuan Zhou , Li-Xin Xu , Guang-Can Guo , Bao-Sen Shi

Single-photon entanglement is of major importance in current quantum communications. However, it is sensitive to photon loss. In this paper, we discuss the protection of single-photon multi-mode W state with noiseless linear amplification.…

Quantum Physics · Physics 2014-02-11 Yu-Bo Sheng , Yang Ou-Yang , Lan Zhou , Lei Wang

We present an efficient method to control the spatial modes of entangled photons produced through SPDC process. Bi-photon beam propagation is controlled by a deformable mirror, that shapes a 404nm CW diode laser pump interacting with a…

Quantum Physics · Physics 2014-08-25 M. Minozzi , S. Bonora , A. V. Sergienko , G. Vallone , P. Villoresi

Multimode optical fibers have seen increasing applications in communication, imaging, high-power lasers and amplifiers. However, inherent imperfections and environmental perturbations cause random polarization and mode mixing, making the…

The need to increase data transfer rates constitutes a key challenge in modern information-driven societies. Taking advantage of the transverse spatial modes of light to encode more information is a promising avenue for both classical and…

Optics · Physics 2017-04-19 Robert Fickler , Manit Ginoya , Robert W. Boyd

We present a detailed theoretical analysis on image transmission via a single multimode fiber (MMF). A single MMF imaging model is developed to study the light wave propagation from the light source to the camera, by using free-space…

Optics · Physics 2016-07-28 Chen Liu , Liang Deng , Deming Liu , Lei Su

Uninhibited control of the complex spatiotemporal quantum wavefunction of a single photon has so far remained elusive even though it can dramatically increase the encoding flexibility and thus the information capacity of a photonic quantum…