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Optically active quantum dots, for instance self-assembled InGaAs quantum dots, are potentially excellent single photon sources. The fidelity of the single photons is much improved using resonant rather than non-resonant excitation. With…

Mesoscale and Nanoscale Physics · Physics 2014-10-08 Andreas V. Kuhlmann , Julien Houel , Daniel Brunner , Arne Ludwig , Dirk Reuter , Andreas D. Wieck , Richard J. Warburton

Although many exciting applications of molecular communication (MC) systems are envisioned to be at microscale, the available MC testbeds reported in the literature so far are mostly at macroscale. This may partially be due to the fact that…

We introduce a novel all-optical platform in multimode and multicore fibres. By using a low-power probe beam and a high-power counter-propagating control beam, we achieve advanced and dynamic control over light propagation within the…

Microwave photonics uses light to carry and process microwave signals over a photonic link. However, light can instead be used as a stimulus to microwave devices that directly control microwave signals. Such optically controlled amplitude…

Signal Processing · Electrical Eng. & Systems 2019-05-15 Cheng-Yi Fang , Hung-Hsi Lin , Mehdi Alouini , Yeshaiahu Fainman , Abdelkrim El Amili

Fluctuation in fluorescence emission of immobilized single molecule is typically ascribed to the chromophore's intrinsic structural conformations and the influence of local environmental factors. Despite extensive research over several…

Chemical Physics · Physics 2024-08-07 Aranyak Sarkar , Vinu Namboodiri , Manoj Kumbhakar

Single-molecule approaches to biology offer a powerful new vision to elucidate the mechanisms that underpin the functioning of living cells. However, conventional optical single molecule spectroscopy techniques such as F\"orster…

All-optical magnetic switching promises ultrafast, high-resolution magnetisation control with the technological attraction of requiring no magnetic field. Existing all-optical switching schemes are driven by ultrafast transient effects,…

In photonics, the idea of controlling light in a similar way that magnetic fields control electrons has always been attractive. It can be realized by synthesizing pseudomagnetic fields (PMFs) in photonic crystals (PhCs). Previous works…

Optics · Physics 2025-09-11 Pan Hu , Lu Sun , Ce Chen , Jingchi Li , Xiong Ni , Xintao He , Jianwen Dong , Yikai Su

We show that structural information can be extracted from single molecule localization microscopy (SMLM) data. More precisely, we reinterpret SMLM data as the measures of a phaseless optical diffraction tomography system for which the…

Signal Processing · Electrical Eng. & Systems 2023-07-19 Thanh-An Pham , Emmanuel Soubies , Ferréol Soulez , Michael Unser

Deterministic control of excitonic properties is key to advancing nanoscale optoelectronic and quantum technologies and to understanding diverse physical, optical, chemical, and biological phenomena. At the molecular scale, these properties…

Non-radiative energy transfer between a Rydberg atom and a polar molecule can be controlled by a DC electric field. Here we show how to exploit this control for state-resolved, non-destructive detection and spectroscopy of the molecules…

Atomic Physics · Physics 2023-11-28 Sabrina Patsch , Martin Zeppenfeld , Christiane P. Koch

The recent progress in nanotechnology [1,2] and single-molecule spectroscopy [3-5] paves the way for cost-effective organic quantum optical technologies emergent with a promise to real-life devices operating at ambient conditions. In this…

Various techniques have been developed to measure the 2D and 3D positions and 2D and 3D orientations of fluorescent molecules with improved precision over standard epifluorescence microscopes. Due to the challenging signal-to-background…

Optics · Physics 2021-02-02 Oumeng Zhang , Matthew D. Lew

A switch capable of routing microwave signals at cryogenic temperatures is a desirable component for state-of-the-art experiments in many fields of applied physics, including but not limited to quantum information processing, communication…

Quantum Physics · Physics 2017-01-10 M. Pechal , J. -C. Besse , M. Mondal , M. Oppliger , S. Gasparinetti , A. Wallraff

Tracking single fluorescent molecules has offered resolution into dynamic molecular processes at the single-molecule level. This perspective traces the evolution of single-molecule tracking, highlighting key developments across various…

Biological Physics · Physics 2026-02-24 Lance W. Q. Xu , Steve Pressé

Localization of single fluorescent molecules is key for physicochemical and biophysical measurements such as single-molecule tracking and super-resolution imaging by single-molecule localization microscopy (SMLM). Recently a series of…

Optics · Physics 2021-09-06 Luciano A. Masullo , Lucía F. Lopez , Fernando D. Stefani

Due to electronic many-body effects, the ionization of a molecule can trigger ultrafast electron dynamics appearing as a migration of the created hole charge throughout the system. Here we propose a scheme for control of the charge…

Chemical Physics · Physics 2015-06-11 Nikolay V. Golubev , Alexander I. Kuleff

The deterministic control of light-matter interactions at the level of single particles and on subwavelength scales is central to quantum optics and hybrid integrated quantum technologies. However, combining cold atom research with…

Quantum Physics · Physics 2025-11-25 J. T. Hansen , F. Gargiulo , J. B. Mathiassen , J. H. Müller , E. S. Polzik , J. -B. Béguin

Although many exciting applications of molecular communication (MC) systems are envisioned to be at microscale, the MC testbeds reported so far are mostly at macroscale. To link the macroworld to the microworld, we propose and demonstrate a…

We introduce a new optical tool - a "two-dimensional optical centrifuge", capable of aligning molecules in extreme rotational states. Unlike the conventional centrifuge, which confines the molecules in the plane of their rotation, its…

Chemical Physics · Physics 2016-05-18 A. A. Milner , A. Korobenko , V. Milner
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