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We find for the first time the ground state energy and the optical absorption spectra for N electrons (holes) interacting with each other and with the longitudinal optical (LO) phonons at an arbitrary electron-phonon coupling strength…

Strongly Correlated Electrons · Physics 2007-05-23 J. T. Devreese , S. N. Klimin , V. M. Fomin , F. Brosens

We propose a novel approach to all-optical frequency standard design, based on a counterintuitive combination of the coherent population trapping effect and signal discrimination at the maximum of absorption for the probe radiation. The…

Quantum Physics · Physics 2009-11-11 G. Kazakov , B. Matisov , I. Mazets , G. Mileti , J. Delporte

We propose an experimental setup to probe the interplay between the quantum superposition principle and gravitational time dilation arising from the mass-energy equivalence. It capitalizes on state-of-the-art atom interferometers that can…

Quantum Physics · Physics 2025-08-13 Jerzy Paczos , Joshua Foo , Magdalena Zych

Recently, the photon absorption attracts lots of interest and plays an important role in a variety of applications. Here, we propose a valuable scheme to investigate the perfect photon absorption in a hybrid atom-optomechanical system both…

Quantum Physics · Physics 2017-04-19 Yang Zhang , Amjad Sohail , Chang-shui Yu

Clock interferometry refers to the coherent splitting of a clock into two different paths and recombining in a way that reveals the proper time difference between them. Unlike the comparison of two separate clocks, this approach allows…

Quantum Physics · Physics 2024-09-05 Ilan Meltzer , Yoav Sagi

The preparation of large, low-entropy, highly coherent ensembles of identical quantum systems is foundational for many studies in quantum metrology, simulation, and information. Here, we realize these features by leveraging the favorable…

Mechanical resonators are widely used as inertial balances to detect small quantities of adsorbed mass through shifts in oscillation frequency[1]. Advances in lithography and materials synthesis have enabled the fabrication of nanoscale…

Materials Science · Physics 2015-05-13 K. Jensen , Kwanpyo Kim , A. Zettl

This paper describes a completely new way to perform noise rejection using a two-photon sensitive detector and taking advantage of the properties of correlated photons to improve an optical communications link in the presence of…

Instrumentation and Detectors · Physics 2015-06-26 Deborah J. Jackson , George M. Hockney , Jonathan P. Dowling

We present a novel, single-ion trap with integrated optical fibers directly embedded within the trap structure to deliver laser light as well as collect the ion's fluorescence. This eliminates the need for optical windows. We characterise…

Atomic Physics · Physics 2023-01-13 Xavier Fernandez-Gonzalvo , Matthias Keller

Optical absorption measurements characterize a wide variety of systems from atomic gases to \emph{in-vivo} diagnostics of living organisms. Here we study the potential of non-classical techniques to reduce statistical noise below the…

We present a theory for the diffraction of large molecules or nanoparticles at a standing light wave. Such particles can act as a genuine photon absorbers due to their numerous internal degrees of freedom effecting fast internal energy…

Quantum Physics · Physics 2016-10-26 Kai Walter , Stefan Nimmrichter , Klaus Hornberger

The three-body F\"orster resonances ${\rm 3}\times nP_{3/2} \to nS_{1/2} +(n+1)S_{1/2} +nP_{3/2}^{*} $ controlled by a dc electric field were realized earlier by the authors in an ensemble of several cold Rydberg Rb atoms. One of the…

In this paper we investigate whether it is in general possible to substitute maximally path-entangled states, namely NOON-states by classical light in a Doppleron-type resonant multiphoton detection processes by studying adaptive phase…

Quantum Physics · Physics 2015-06-12 Sabine Wölk , Wenchao Ge , M. Suhail Zubairy

The Dick effect can be a limitation of the achievable frequency stability of a passive atomic frequency standard when the ancillary frequency source is only periodically sampled. Here we analyze the Dick effect for a pulsed vapor cell clock…

Atomic Physics · Physics 2016-11-17 Jean-Marie Danet , Michel Lours , Stéphane Guérandel , Emeric de Clercq

We study the effect of a control beam on a Lambda electromagnetically induced transparency (EIT) system in 87Rb. The control beam couples one ground state to another excited state forming a four level N-system. Phase coherent beams to drive…

Quantum Physics · Physics 2009-11-13 M. G. Bason , A. K. Mohapatra , K. J. Weatherill , C. S. Adams

We report the realization and characterization using coherent population trapping (CPT) spectroscopy of an octadecyltrichlorosilane (OTS)-coated centimeter-scale Cs vapor cell. The dual-structure of the resonance lineshape, with presence of…

An ultrafast all-optical shutter is presented, based on a simple two-color two-photon absorption technique. For time-resolved luminescence measurements this shutter is an interesting alternative to the optical Kerr gate. The rejection…

Optics · Physics 2016-04-21 Marijn A. M. Versteegh , Jaap I. Dijkhuis

Plasmonics offer an exciting way to mediate the interaction between light and matter, allowing strong field enhancement and confinement, large absorption and scattering at resonance. However, simultaneous realization of ultra-narrow band…

Optics · Physics 2016-01-06 Zhengdong Yong , Senlin Zhang , Chengsheng Gong , Sailing He

We have detected and analyzed narrow, high contrast coherent population trapping resonances, which appear in transmission of the probe monochromatic light beam under action of the counterpropagating two-frequency laser radiation, on example…

Atomic Physics · Physics 2015-06-03 Ersoy Sahin , Ramiz Hamid , Cengiz Birlikseven , Gönül Özen , Azad Ch. Izmailov

Recent developments in frequency metrology and optical clocks have been based on electronic transitions in atoms and singly charged ions as references. These systems have enabled relative frequency uncertainties at a level of a few parts in…

Atomic Physics · Physics 2018-12-06 M. G. Kozlov , M. S. Safronova , J. R. Crespo López-Urrutia , P. O. Schmidt