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EQEC'96. 1996 European Quantum Electronic Conference最新文献

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Nanostructures be Laser Direct Etching of Silicon 硅的激光直接蚀刻纳米结构
Pub Date : 2002-08-06 DOI: 10.1109/CLEOE.1996.562394
M. Mullenborn, H. Dirac, F. Grey
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引用次数: 0
Quantum Interference, Entanglement, and Quantum Instability in Resonance Fluorescence 共振荧光中的量子干涉、纠缠和量子不稳定性
Pub Date : 2002-08-06 DOI: 10.1109/EQEC.1996.561542
S. Kilim, V. Shatokhin
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引用次数: 0
Quantum Cryptography and Quantum Computation 量子密码学和量子计算
Pub Date : 2002-08-06 DOI: 10.1109/EQEC.1996.561540
J. Rarity
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引用次数: 2
Experiments On Nonlinear Radiation Trapping in a Saturable Atomic Vapor 饱和原子蒸汽非线性辐射俘获实验
Pub Date : 2001-09-01 DOI: 10.1109/EQEC.1996.561812
T. Scholz, J. Welzel, W. Lange
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引用次数: 5
Collisional Deactivation of Vibrationally Highly Excited Azulene in Supercritical Fluids 超临界流体中振动高激发Azulene的碰撞失活
Pub Date : 1997-11-22 DOI: 10.1109/EQEC.1996.561913
D. Schwarzer, J. Troe, M. Votsmeier, M. Zerezke
The collisional deactivation of vibrationally highly excited azulene was studied from gas into compressed liquid phase by pump-and-probe picosecond laser spectroscopy. Collisional deactivation rates were compared with solvatochromic shifts Δν of the azulene S3←S0 absorption band under identical conditions. Employing supercritical fluids at pressures between 0.03 and 4000 bars and temperatures between 298 and 640 K, measurements covering the complete gas–liquid transition were performed. For the energy transfer experiments, azulene with an energy of ∼20000 cm−1 was generated by laser excitation into the S1- and internal conversion to the S0*-ground state. The subsequent loss of vibrational energy was monitored by following the transient absorption at the red wing of the S3←S0 absorption band near 290 nm. Transient signals were converted into energy-time profiles using hot band absorption coefficients from shock wave experiments for calibration and accounting for solvent shifts of the spectra. Under all con...
采用泵探皮秒激光光谱技术研究了振动高激发azulene从气体到压缩液相的碰撞失活过程。在相同条件下,比较了碰撞失活率和azulene S3←S0吸收带的溶剂变色位移Δν。在0.03 ~ 4000bar的压力和298 ~ 640k的温度下,采用超临界流体进行了完整的气液转变测量。在能量转移实验中,通过激光激发到S1-和内部转换到S0*-基态,产生能量为~ 20000 cm−1的azulene。随后的振动能量损失通过跟踪S3←S0吸收带红翼290 nm附近的瞬态吸收来监测。利用激波实验的热带吸收系数将瞬态信号转换为能量-时间谱,用于校准和计算光谱的溶剂位移。无论如何……
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引用次数: 71
Characterization of Colloidal Particles by Laser-Induced Plasma Spectroscopy (LIPS) 激光诱导等离子体光谱(LIPS)表征胶体颗粒
Pub Date : 1997-06-30 DOI: 10.1016/S0003-2670(97)00243-2
C. Haisch, J. Liermann, Ulrich Panne, Reinhard Niessner
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引用次数: 53
Polarization Resolution of LISA LISA偏振分辨率
Pub Date : 1997-06-01 DOI: 10.1109/EQEC.1996.561948
O. Jennrich, M. Peterseim, K. Danzmann
We discuss LISA's ability to resolve different polarizational states of a gravitational wave with fixed frequency and amplitude. Assuming a binary as the source of the gravitational wave, its orientation is connected with the polarization of the gravitational wave emitted. Using methods of signal processing, we calculate the 1- uncertainty range for measuring the orientation of the source.
我们讨论了LISA对固定频率和振幅的引力波的不同极化状态的分辨能力。假设双星作为引力波的源,它的方向与所发射的引力波的极化有关。利用信号处理的方法,计算了测量源方向的1-不确定度范围。
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引用次数: 4
Stimulated Light Forces Using Picosecond Laser Pulses 利用皮秒激光脉冲的受激光力
Pub Date : 1997-05-01 DOI: 10.1117/12.273751
I. Bloch, F. Cremers, A. Goepfort, D. Haubrich, F. Lison, R. Wynands, D. Meschede
Using the stimulated force exerted by counterpropagating picosecond laser pulses from a mode-locked Ti:Sapphire laser we were able to focus a beam of laser-cooled cesium atoms along one dimension to about 57% of its original width in the detection zone. The force profile was measured outside and inside the overlap region of the pulses and found to be in agreement with an earlier theoretical prediction. A brief theoretical account of the interaction of atoms with pulsed laser light based on the optical Bloch equations is given.
利用锁模Ti:蓝宝石激光器的反传播皮秒激光脉冲所施加的受激力,我们能够将激光冷却的铯原子束沿着一维聚焦到探测区域原始宽度的57%左右。在脉冲重叠区域内外测量了力分布,发现与早期的理论预测一致。基于光学布洛赫方程,对原子与脉冲激光的相互作用作了简要的理论说明。
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引用次数: 0
Fiber Coupled Ultrafast Scanning Tunneling Microscope 光纤耦合超快扫描隧道显微镜
Pub Date : 1997-04-01 DOI: 10.1063/1.364322
U. Keil, J. Hvam
We report on a scanning tunneling microscope with a photoconductive gate in the tunneling current circuit. The tunneling tip is attached to a coplanar transmission line with an integrated photoconductive switch. The switch is illuminated through a fiber which is rigidly attached to the switch substrate. By using a firmly attached fiber we achieve an excellent reproducibility and unconstrained positioning of the tip. We observe a transient signal with 2.9 ps pulse width in tunneling mode and 5 ps in contact mode. The instrument is applied to investigating the mode structure on a coplanar waveguide. The measurements show that the probe works as a transient voltage detector in contact and a capacitively coupled transient field detector in tunneling mode. We do not measure the transient voltage change in the ohmic tunneling current. In this sense, the spatial resolution for propagating electrical pulses is better in contact mode than in tunneling mode.
本文报道了一种在隧道电流电路中采用光导栅的扫描隧道显微镜。所述隧道尖端连接到具有集成光导开关的共面传输线上。所述开关通过一根光纤照射,该光纤牢固地附着在所述开关基板上。通过使用牢固附着的纤维,我们实现了极好的再现性和不受约束的尖端定位。我们观察到一个瞬态信号,在隧道模式下脉冲宽度为2.9 ps,在接触模式下脉冲宽度为5 ps。该仪器应用于共面波导模结构的研究。测量结果表明,探头在接触状态下可作为瞬态电压检测器,在隧道模式下可作为电容耦合瞬态场检测器。我们不测量欧姆隧穿电流的瞬态电压变化。从这个意义上说,电脉冲传播的空间分辨率在接触模式下比在隧道模式下更好。
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引用次数: 21
Bandgaps and Group Velocity in Optical Lattices 光学晶格中的带隙和群速度
Pub Date : 1997-04-01 DOI: 10.1109/EQEC.1996.561506
P. M. Visser, G. Nienhuis
Abstract We study the optical properties of a periodic array of thin layers, as a model of an optical lattice carried by two counterpropagating plane waves. In particular we evaluate the dependence of the stationary waves on the polarization and the incidence angle of a probe beam. Also the effect of the dispersion relation and the photonic band gaps on the group velocity of wave packets is analyzed.
摘要研究了由两个反传播平面波携带的周期性薄层阵列的光学特性。特别地,我们评估了驻波与探测光束的偏振和入射角的关系。分析了色散关系和光子带隙对波包群速度的影响。
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引用次数: 5
期刊
EQEC'96. 1996 European Quantum Electronic Conference
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