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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Approximation Distillation of Quantum Coherence
量子相干性 近似蒸馏 相干资源理论
2023/4/18
Coherence distillation is a basic information-theoretic task in the resource theory of coherence. In this talk, I will report the framework of the approximate coherence distillation under strictly inc...
Spectral spatial coherence of high-power multi-chip LEDs
Spectral spatial coherence high-power multi-chip LEDs
2013/7/3
We investigate the spatial coherence of the light generated from high-power multi-chip red LEDs by using the van Cittert-Zernike theorem. It is theoretically demonstrated that the light generated from...
Tight Focusing of Light Beams: Effect of Polarization, Phase, and Coherence
Tight Focusing Light Beams Effect of Polarization Phase Coherence
2013/7/3
The focusing theory of electromagnetic waves has been well developed. A scalar wave theory satisfactorily describes the focusing process for a small semi-aperture angle. However, the vectorial charact...
Quantum plasmonics: second-order coherence of surface plasmons launched by quantum emitters into a metallic film
Quantum plasmonics second-order coherence of surface plasmons quantum emitters Optics
2012/5/31
We address the issue of the second-order coherence of single surface plasmons launched by a quantum source of light into extended gold films. The quantum source of light is made of a scanning fluoresc...
Polarization Sensitive Optical Coherence Tomography for Blood Glucose Monitoring in Human Subjects
Circularly polarized light chiral glucose scattering coefficient tissue phantom human subjects
2012/2/28
A device based on Polarization sensitive optical coherence tomography is developed to monitor blood glucose levels in human subjects. The device was initially tested with tissue phantom. The measureme...
Interplay between coherence and decoherence in LHCII photosynthetic complex
LHCII photosynthetic complex
2011/9/13
This paper investigates the dynamics of excitonic transport in photocomplex LHCII, the primary component of the photosynthetic apparatus in green plants. The dynamics exhibits a strong interplay betwe...
Observation of Superfluorescence from a Spontaneous Coherence of Excitons in ZnTe Crystal: Evidence for Bose-Einstein Condensation of Excitons?
Superfluorescence Spontaneous Coherence Excitons ZnTe Crystal Bose-Einstein Condensation
2011/8/11
Abstract: Superfluorescence (SF) is the emission from a dense coherent system in population inversion, formed from an initially incoherent ensemble. This is characterised by an induction time (t_D) fo...
Generating Molecular Rovibrational Coherence by Two-Photon Femtosecond Photoassociation of Thermally Hot Atoms
Generating Molecular Rovibrational Two-Photon Femtosecond Photoassociation Thermally Hot Atoms
2011/8/18
Abstract: The formation of diatomic molecules with rotational and vibrational coherence is demonstrated experimentally in free-to-bound two-photon femtosecond photoassociation of hot atoms. In a therm...
Explaining the observed long coherence effects by 2D photon echo experiments in photosynthetic EET : Two-Component Phonon Spectrum model
2-D photon echo spectroscopy Quantum masterequations polaron transformation Dynamical disorder Novikov theorem
2011/9/8
We propose a simple stochastic model which successfully explains the long coherence effects observed in photosynthetic Excitation Energy Transport (EET) by 2D photon echo experiments of G. S. Engel et...
Theoretical study of Acousto-optical coherence tomography using random phase jumps on US and light
Acousto-optical random phase jumps coherence tomography
2011/9/6
Acousto-Optical Coherence Tomography (AOCT) is variant of Acousto Optic Imaging (called also ultrasonic modulation imaging) that makes possible to get z resolution with acoustic and optic Continuous W...
Propagating quantum coherence for a biological advantage
Propagating quantum coherence abiological advantage
2011/9/14
reaction centers, where excitations induce charge separation. Experimental evidence shows that a variety of photosynthetic systems can preserve quantum beats in this energy transfer process, even at r...
We prove the (generalized) coherence conjecture of Pappas and Rapoport proposed in [PR3]. As a corollary, one of the main theorems in [PR4], which describes the geometry of the special fibers of the l...
Dynamic Stimulation of Quantum Coherence in Lattice Bosons
Dynamic Stimulation Quantum Coherence in Lattice Bosons
2010/11/19
Thermal fluctuations tend to destroy long-range phase correlations. Consequently, bosons in a lattice will undergo a transition from a phase-coherent superfluid as the temperature rises. Contrary to c...
Spin-orbit coupling and phase-coherence in InAs nanowires
Spin-orbit coupling phase-coherence InAs nanowires
2010/11/18
We investigated the magnetotransport of InAs nanowires grown by selective area metal-organic
vapor phase epitaxy. In the temperature range between 0.5 and 30 K reproducible fluctuations in the conduc...
The influence of temporal coherence on the dynamical Casimir effect
Casimir effect Quantum Physics temporal coherence
2010/11/8
We study the dynamical Casimir effect in the presence of a finite coherence time, which is associated with a finite quality factor of the optical cavity. We use the time refraction model, where a fixe...