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Now showing items 41-50 of 311
Electromagnetically induced transparency in rubidium vapor prepared by a comb of short optical pulses
(American Physical Society, 2005)
It was shown by Kocharovskaya and Khanin [Sov. Phys. JETP 63, 945 (1986)] that a comb of optical pulses can induce a ground-state atomic coherence and change the optical response of an atomic medium. In our experiment, we ...
Reversing the weak measurement of an arbitrary field with finite photon number
(American Physical Society, 2009)
For an arbitrary field with finite photon number inside a leaky cavity, we show that the null-result measurement can be conditionally reversed, using either multiple atoms or a multilevel atom. Even with photons detected, ...
Entanglement conditions for two-mode states: Applications
(American Physical Society, 2006)
We examine the implications of several recently derived conditions [Hillery and Zubairy, Phys. Rev. Lett. 96, 050503 (2006)] for determining when a two-mode state is entangled. We first find examples of non-Gaussian states ...
Effect of the counterrotating terms on polarizability in atom-field interactions
(American Physical Society, 2009)
The effect of the counterrotating terms on the linear polarizability is investigated, which is responsible for the validity of the optical theorem in all frequency regions. A unitary transformation method [H. Zheng, S. -Y. ...
Reconstruction of an entangled state in a cavity via Autler-Townes spectroscopy RID A-4660-2010
(American Physical Society, 2002)
We present a scheme to reconstruct a two-mode entangled state in a high-Q cavity from the spontaneous emission spectrum in a driven four-level atomic system. The two modes of the cavity field drive the upper three levels ...
Aharonov-Casher and spin Hall effects in mesoscopic ring structures with strong spin-orbit interaction RID A-1315-2011 RID B-3617-2008
(American Physical Society, 2008)
We study the quantum interference effects induced by the Aharonov-Casher phase in asymmetrically confined two-dimensional electron and heavy-hole ring structure systems, taking into account the electrically tunable spin-orbit ...
Aharonov-Casher effect in a two-dimensional hole ring with spin-orbit interaction RID B-3617-2008 RID A-1315-2011
(American Physical Society, 2007)
We study the quantum interference effects induced by the Aharonov-Casher phase in a ring structure in a two-dimensional heavy-hole (HH) system with spin-orbit interaction realizable in narrow asymmetric quantum wells. The ...
Theory of reduced superfluid density in underdoped cuprate superconductors
(American Physical Society, 2008)
The critical temperature of an underdoped cuprate superconductor is limited by its phase stiffness rho. In this paper we argue that the dependence of rho on doping x should be understood as a consequence of deleterious ...
Precise measurement of K-shell fluorescence yield in iridium: An improved test of internal-conversion theory
(American Physical Society, 2005)
We have measured the total intensity of K x rays relative to 129.4-keV gamma rays from decay of the second excited state in Ir-191. This (M1+E2) transition was observed following the beta decay of 15.4-d Os-191. Our measured ...
phi and Omega production in relativistic heavy-ion collisions in a dynamical quark coalescence model RID A-2398-2009
(American Physical Society, 2006)
Based on the phase-space information obtained from a multiphase transport model within the string-melting scenario for strange and antistrange quarks, we study the yields and transverse-momentum spectra of phi mesons and ...