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High Fidelity Quantum Gates for Trapped Ions under Micromotion
High Fidelity Quantum Gate Trapped Ions Micromotion
2016/1/22
Two- or three-dimensional Paul traps can confine a large number of ions forming a Wigner crystal, which would provide an ideal architecture for scalable quantum computation except for the micromotion,...
High-energy long-lived resonance of electrons in fractal-like semiconductor heterostructures
High-energy long-lived resonance electrons fractal-like semiconductor heterostructures
2010/11/9
A fractal-like alignment of quantum wells is shown to accommodate resonant states with long lifetimes. For the parameters of the semiconductor heterostructure GaAs/Al$_{0.4}$Ga$_{0.6}$As with the wel...
Lie algebraic analysis and simulation of high-current pulsed beam transport in a solenoidal lens
solenoidal lens Lie algebraic space charge effect nonlinearity
2009/12/24
Recent calculations of the transport of a high-current beam in a solenoidal lens have made progress to the second order with the Lie algebraic method. A review of the theory and our simulation to rea...
Fabrication of the high power input coupler for BEPCⅡ superconducting cavities
high power input coupler fabrication superconducting cavity
2009/8/17
The BEPCII storage ring adopts two 500 MHz superconducting cavities (SCC). Each one is equipped with a 500 MHz input power coupler. The coupler is to feed 150 kW power in continuous wave (CW) mode wit...
Development of high purity niobium used in SRF accelerating cavity
high purity niobium superconducting cavity electron beam furnace RRR value
2009/8/14
Niobium is widely used in SRF (Superconducting Radio Frequency) cavities due to its excellent superconductivity and workability. With the continuous development of technology, higher demands of materi...
High power conditioning of the input coupler for BEPCⅡ superconductingcavity
high power input coupler high power conditioning superconducting cavity
2009/8/14
High power conditioning of the input coupler for BEPCII superconducting cavity has been performed. After room temperature conditioning, the RF power of 150 kW with continuous wave at standing wave mo...
Installation and cosmic ray test of the high voltage system of the BESⅢ drift chamber
BESⅢ drift chamber high voltage system cosmic ray test installation
2009/8/14
After examination of the designed high voltage power supply system of the BESⅢ drift chamber in the beam test of the full length prototype of drift chamber, a full system covering all the channels of ...
Studies on high order mode of bell-shaped prototype cavities
perturbation method higher order modes LabVIEW superconducting RF
2009/8/14
Aluminium and copper prototype cavities were designed to study higher order modes (HOM). An automatic field mapping system was developed with LabVIEW to measure the radiofrequency (RF) characteristics...
Massachusetts Institute of Technology team takes high-res, 3-D images of eye（图）
Quantum Electronics Electro-Optics
2007/5/8
April 30, 2007，In work that could improve diagnoses of many eye diseases, MIT researchers have developed a new type of laser for taking high-resolution, 3-D images of the retina, the part of the eye t...
26-Feb-2007，Washington, DC ?Scientists at the Carnegie Institution's Geophysical Laboratory in collaboration with a physicist at the Chinese University of Hong Kong have discovered that two different ...
Mesoscopic d-Wave Qubits: Can High-Tc Cuprates Play a Role in Quantum Computing?
high-Tc Josephson T-breaking d-wave qubit decoherence design scalability
2010/4/12
Due to nontrivial orbital pairing symmetry, surfaces and interfaces of high-Tc superconductors support states which violate time-reversal (T-) symmetry. Such naturally degenerate states, useful as wor...
High-power InGaAs VCSEL’s single devices and 2-D arrays
VCSEL's 2-D arrays quantum well high power 980 nm
2011/12/15
We report on bottom-emitting vertical-cavity surface-emitting lasers (VCSEL’s) and laser arrays providing high output powers in the 980-nm wavelength regime. Single devices with active diameters of 50...
High-Power Diffusion Cooling Planar Waveguide CO2 Laser
CO2 Laser dielectric coaxial waveguide
2010/4/19
A diffusion-cooled CO2 laser using a coaxial waveguide is investigated theoretically. The resonator extracting the laser beam consits of two annular plane mirrors enclosing the two ends of the wavegui...