Results 1 to 10 of about 129,349 (334)

BB84 Quantum Key Distribution System based on Silica-Based Planar Lightwave Circuits [PDF]

open access: yes, 2004
We constructed an optical interferometer for a Bennett-Brassard quantum key distribution system using integrated optics based on planar lightwave circuit technology, and tested its operation and stability.
Hatanaka, Takaaki   +2 more
core   +1 more source

Two-photon quantum walks in an elliptical direct-write waveguide array

open access: yes, 2011
Integrated optics provides an ideal test bed for the emulation of quantum systems via continuous-time quantum walks. Here we study the evolution of two-photon states in an elliptic array of waveguides. We characterise the photonic chip via coherent-light
A Fedrizzi   +16 more
core   +1 more source

Quantum Photonic Simulation of Spin-Magnetic Field Coupling and Atom-Optical Field Interaction

open access: yesApplied Sciences, 2020
In this work, we present the physical simulation of the dynamical and topological properties of atom-field quantum interacting systems by means of integrated quantum photonic devices.
Jesús Liñares   +3 more
doaj   +1 more source

A space-based quantum gas laboratory at picokelvin energy scales

open access: yesNature Communications, 2022
Ultracold ensembles are promising sources for precision measurements when their quantum state can precisely be prepared. Here the authors achieve a quantum state engineering of Bose-Einstein condensates in space using NASA’s Cold Atom Lab aboard the ...
Naceur Gaaloul   +12 more
doaj   +1 more source

Polarization entangled state measurement on a chip

open access: yes, 2010
The emerging strategy to overcome the limitations of bulk quantum optics consists of taking advantage of the robustness and compactness achievable by the integrated waveguide technology. Here we report the realization of a directional coupler, fabricated
Crespi, A.   +6 more
core   +1 more source

Yoctocalorimetry: phonon counting in nanostructures [PDF]

open access: yes, 1998
It appears feasible with nanostructures to perform calorimetry at the level of individual thermal phonons. Here I outline an approach employing monocrystalline mesoscopic insulators, which can now be patterned from semiconductor heterostructures into ...
Abrahams   +45 more
core   +3 more sources

Magneto-optical trapping using planar optics

open access: yesNew Journal of Physics, 2021
Laser-cooled atoms are a key technology for many calibration-free measurement platforms—including clocks, gyroscopes, and gravimeters—and are a promising system for quantum networking and quantum computing.
William R McGehee   +9 more
doaj   +1 more source

Ppb-level NH3 photoacoustic sensor combining a hammer-shaped tuning fork and a 9.55µm quantum cascade laser

open access: yesPhotoacoustics, 2023
We present a quartz enhanced photoacoustic spectroscopy (QEPAS) gas sensor designed for precise monitoring of ammonia (NH3) at ppb-level concentrations.
Shangzhi Li   +8 more
doaj   +1 more source

Towards integrated superconducting detectors on lithium niobate waveguides

open access: yes, 2017
Superconducting detectors are now well-established tools for low-light optics, and in particular quantum optics, boasting high-efficiency, fast response and low noise.
Bartley, Tim J.   +17 more
core   +1 more source

Prospects for using integrated atom-photon junctions for quantum information processing

open access: yes, 2011
We investigate the use of integrated, microfabricated photonic-atomic junctions for quantum information processing applications. The coupling between atoms and light is enhanced by using microscopic optics without the need for cavity enhancement.
Hinds, E. A., Nyman, R. A., Scheel, S.
core   +1 more source

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