Results 41 to 50 of about 61,321 (227)

Coherent State Control to Recover Quantum Entanglement and Coherence

open access: yesEntropy, 2019
How to analytically deal with the entanglement and coherence dynamics of separated Jaynes−Cummings nodes with continuous-variable fields is still an open question. We here generalize this model to a more common situation including either a small or
Li-Tuo Shen   +2 more
doaj   +1 more source

Group velocity study in hot Rb vapor with buffer gas

open access: yes, 2003
We study the behavior of the group velocity of light under conditions of electromagnetically induced transparency (EIT) in a Doppler broadened medium.
Mikhailov, Eugeniy E.   +2 more
core   +1 more source

Wireless Resonators With Coupled Versus Decoupled Units: Which Enhances Local SNR of RF Receive Arrays Better? [PDF]

open access: yesMagn Reson Med
ABSTRACT Purpose To compare two identically sized wireless resonator designs, one with strongly coupled units and the other with decoupled units, for their ability to enhance receive performance in MRI when used with local receive arrays. Methods Both wireless resonator designs were fabricated and experimentally evaluated for detuning efficiency, SNR ...
Lu M, Zhu H, Wang R, Yan X.
europepmc   +2 more sources

Continuous dynamical decoupling utilizing time‐dependent detuning [PDF]

open access: yesFortschritte der Physik, 2016
Resilience to noise and to decoherence processes is an important ingredient for the implementation of quantum information processing, and quantum technologies. To this end, techniques such as pulsed and continuous dynamical decoupling have been proposed to reduce noise effects.
Cohen, I., Aharon, N., Retzker, A.
openaire   +3 more sources

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Stability diagrams of two optically mutual-injected quantum cascade lasers

open access: yesAIP Advances, 2021
The dynamic properties and stability of optically mutual-injected arrays composed of terahertz quantum cascade lasers (THz QCLs) were investigated and compared with those of diode laser (DL) arrays.
Y. Li   +6 more
doaj   +1 more source

Frequency-hopping mechanism and control method for nonlinear parity-time-symmetric wireless power transfer systems

open access: yesFrontiers in Energy Research, 2023
Nonlinear parity-time-symmetric wireless power transfer (NPTS-WPT) is a novel wireless power transfer technology. NPTS-WPT systems exhibit the resonant frequency bifurcation phenomenon in the strong coupling region.
Changsheng Li   +4 more
doaj   +1 more source

Ultraprecise Rydberg atomic localization using optical vortices

open access: yes, 2020
We propose a robust localization of the highly-excited Rydberg atoms, interacting with doughnut-shaped optical vortices. Compared with the earlier standing-wave (SW)-based localization methods, a vortex beam can provide an ultrahigh-precision two ...
Hamedi, Hamid Reza   +4 more
core   +1 more source

Mode hopping strongly affects observability of dynamical instability in optical parametric oscillators [PDF]

open access: yes, 2006
Theoretical investigations of dynamical behavior in optical parametric oscillators (OPO) have generally assumed that the cavity detunings of the interacting fields are controllable parameters.
A. Amon   +21 more
core   +3 more sources

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

open access: yesAdvanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez   +7 more
wiley   +1 more source

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