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Placing an atom and a molecule in a cavity opens the door to initialize molecular dynamics by exciting a level of the atom. This approach enlarges the range of choosing the light source to trigger molecular dynamics substantially. The…

Quantum Physics · Physics 2024-09-10 András Csehi , Ágnes Vibók , Lorenz S. Cederbaum , Gábor J. Halász

We determine the transmission of light through a planar atomic array beyond the limit of low light intensity that displays optical bistability in the mean-field regime. We develop a theory describing the intrinsic optical bistability, which…

Atomic Physics · Physics 2021-03-18 C. D. Parmee , J. Ruostekoski

We report experimental investigationd of optical pulse group velocity reduction and probe pulse regeneration using a Raman scheme. The new scheme which does not rely on the on-one-photon resonance electromagnetically induced transparency…

Quantum Physics · Physics 2009-11-07 M. Kozuma , D. Akasmatsu , L. Deng , E. W. Hagley , M. G. Payne

We admit that the vacuum is not empty but is filled with continuously appearing and disappearing virtual fermion pairs. We show that if we simply model the propagation of the photon in vacuum as a series of transient captures within the…

General Physics · Physics 2011-11-09 M. Urban , F. Couchot , X. Sarazin

Exciton-polaritons can be created in semiconductor microcavities. These quasiparticles act as weakly interacting bosons with very light mass, of the order of $10^{-4}$ times the vacuum electron mass. Many experiments have shown effects…

Photonic nanocavities are a key component in many applications because of their capability of trapping and storing photons and enhancing interactions of light with various functional materials and structures. The maximal number of photons…

Optics · Physics 2013-03-15 Xiankai Sun , Xufeng Zhang , Carsten Schuck , Hong X. Tang

Confining electromagnetic fields inside an optical cavity can enhance the light-matter coupling between quantum materials embedded inside the cavity and the confined photon fields. When the interaction between the matter and the photon…

The light force on particles trapped in the field of a high-Q cavity mode depends on the quantum state of field and particle. Different photon numbers generate different optical potentials anddifferent motional states induce different field…

Quantum Physics · Physics 2009-04-17 András Vukics , Wolfgang Niedenzu , Helmut Ritsch

We explore the photon statistics of light emitted from a system comprising a single four--level atom strongly coupled to a high-finesse optical cavity mode which is driven by a coherent laser field. In the weak driving regime this system is…

Quantum Physics · Physics 2016-08-16 S. Rebić , A. S. Parkins , S. M. Tan

We consider the time-delayed coincidence counting of two photons emitted in a cascade by a single particle (atom, molecule, nucleus, etc). The time-dependence of the probability amplitude of the second photon in the cascade has a sharply…

Quantum Physics · Physics 2009-11-13 R. N. Shakhmuratov , J. Odeurs , Paul Mandel

We study photon emission by an ensemble of two-level systems, with strong inhomogeneous broadening and coupled to a cavity mode whose frequency has linear time-dependence. The analysis shows that, regardless the distribution of energy level…

Mesoscale and Nanoscale Physics · Physics 2019-09-25 C. Sun , V. Y. Chernyak , A. Piryatinski , N. A. Sinitsyn

We study the coherent scattering process of a single photon confined in an one-dimensional (1D) coupled cavity-array, where a $\Lambda$-type three-level atom is placed inside one of the cavities in the array and behaves as a functional…

Quantum Physics · Physics 2008-11-10 Z. R. Gong , H. Ian , Lan Zhou , C. P. Sun

We report slowed propagation and storage and retrieval of thermal light in warm rubidium vapor using the effect of electromagnetically-induced transparency (EIT). We first demonstrate slowed-propagation of the probe thermal light beam…

Quantum Physics · Physics 2010-09-28 Young-Wook Cho , Yoon-Ho Kim

We report on the demonstration of light storage for times greater than a second in praseodymium doped Y$_2$SiO$_5$ using electromagnetically induced transparency. The long storage times were enabled by the long coherence times possible for…

Quantum Physics · Physics 2007-05-23 J. J. Longdell , E. Fraval , M. J. Sellars , N. B. Manson

We report an experimental demonstration of optimal storage and retrieval of heralded single-photon wave packets using electromagnetically induced transparency (EIT) in cold atoms at a high optical depth. We obtain an optimal storage…

Trapped atomic ions are ideal single photon emitters with long lived internal states which can be entangled with emitted photons. Coupling the ion to an optical cavity enables efficient emission of single photons into a single spatial mode…

We investigate the effect of a cavity on nonlinear two-photon transitions of a molecular system and how such an effect depends on the cavity quality factor, the field enhancement and the possibility of dephasing. We find that the molecular…

Quantum Physics · Physics 2023-10-16 Zeyu Zhou , Hsing-Ta Chen , Maxim Sukharev , Joseph E. Subotnik , Abraham Nitzan

When a single photon traverses a cloud of 2-level atoms, the average time it spends as an atomic excitation -- as measured by weakly probing the atoms -- can be shown to be the spontaneous lifetime of the atoms multiplied by the probability…

There is currently great interest in the strong coupling between the quantized photon field of a cavity and electronic or other degrees of freedom in materials. A major goal is the creation of novel collective states entangling photons with…

Strongly Correlated Electrons · Physics 2019-01-15 Giacomo Mazza , Antoine Georges

In spite of decades of work it has remained unclear whether or not superradiant quantum phases, referred to here as photon condensates, can occur in equilibrium. In this Letter, we first show that when a non-relativistic quantum many-body…

Mesoscale and Nanoscale Physics · Physics 2019-09-25 G. M. Andolina , F. M. D. Pellegrino , V. Giovannetti , A. H. MacDonald , M. Polini