Results 51 to 60 of about 29,655 (227)

Correlation femtoscopy of small systems

open access: yes, 2013
The basic principles of the correlation femtoscopy, including its correspondence to the Hanbury Brown and Twiss intensity interferometry, are re-examined.
R. Balescu   +6 more
core   +1 more source

High dynamic range imaging with a single-mode pupil remapping system : a self-calibration algorithm for redundant interferometric arrays [PDF]

open access: yes, 2006
The correction of the influence of phase corrugation in the pupil plane is a fundamental issue in achieving high dynamic range imaging. In this paper, we investigate an instrumental setup which consists in applying interferometric techniques on a single ...
Lacour, S., Perrin, G., Thiébaut, E.
core   +4 more sources

The application of compressive sampling to radio astronomy I: Deconvolution

open access: yes, 2011
Compressive sampling is a new paradigm for sampling, based on sparseness of signals or signal representations. It is much less restrictive than Nyquist-Shannon sampling theory and thus explains and systematises the widespread experience that methods such
Beck   +20 more
core   +1 more source

Complex Master Slave Interferometry [PDF]

open access: yes, 2016
A general theoretical model is developed to improve the novel Spectral Domain Interferometry method denoted as Master/Slave (MS) Interferometry. In this model, two functions, g and h are introduced to describe the modulation chirp of the channeled ...
Bradu, Adrian   +5 more
core   +1 more source

Sensitivity of a Bolometric Interferometer to the CMB power spectrum [PDF]

open access: yes, 2008
Context. The search for B-mode polarization fluctuations in the Cosmic Microwave Background is one of the main challenges of modern cosmology. The expected level of the B-mode signal is very low and therefore requires the development of highly sensitive ...
Bunn   +11 more
core   +3 more sources

Macroscopic magnetic guide for cold atoms [PDF]

open access: yes, 2009
We demonstrate a macroscopic magnetic guide for cold atoms with suppressed longitudinal field curvature which is highly desired for atom interferometry.
Prentiss, Mara, Tonyushkin, Alexey
core   +2 more sources

Development of High‐Performance Multilayer Monochromators

open access: yesAdvanced Optical Materials, EarlyView.
Detailed insights into the optical and multilayer design of Double Multilayer Monochromators (DMM) are presented and fully characterized, including key optimization strategies and solutions to fabrication challenges. By integrating in‐house Ion Beam Figuring and a high uniformity multilayer coating process, the developed DMMs achieve high reflectivity,
Wadwan Singhapong   +11 more
wiley   +1 more source

Feedback control of trapped coherent atomic ensembles

open access: yes, 2013
We demonstrate how to use feedback to control the internal states of trapped coherent ensembles of two-level atoms, and to protect a superposition state against the decoherence induced by a collective noise.
Aspect, A.   +6 more
core   +4 more sources

Optimal combination of signals from co-located gravitational wave interferometers for use in searches for a stochastic background [PDF]

open access: yes, 2004
This article derives an optimal (i.e., unbiased, minimum variance) estimator for the pseudo-detector strain for a pair of co-located gravitational wave interferometers (such as the pair of LIGO interferometers at its Hanford Observatory), allowing for ...
Albert Lazzarini   +13 more
core   +4 more sources

Biohybrid Actuators in Compact Arrangement with Embedded X Electrode

open access: yesAdvanced Robotics Research, EarlyView.
Selective control of multimuscle biohybrid actuators is crucial for achieving complex movements of biohybrid robots. In this study, embedded X electrodes are fabricated to selectively control multiple muscles, realizing the robotic finger's bidirectional movements.
Tingyu Li, Minghao Nie, Shoji Takeuchi
wiley   +1 more source

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