phase coherent state 中文意思是什麼
phase coherent state
解釋
相位相干態-
Finally we focus our attention on studying the emission spectrum of two atoms driven by a single - mode field in an ideal cavity. we showed that the atomic emission spectrum is insensitive to the phase of field for the two atoms initially in the coherent superposition state tf / = v2 / 2 ( j +, - ) h ? + } ), when the two atoms is initially prepared in ( fs * } = cos ( 0 / 2 ] +, + ) + sm ( 0 / 2 ) ei ' p -, - ), the atomic emission spectrum is associated with not only the field photon - number distribution and the atomic populations, but also the phases of the field and the atomic dipole
接著考察了好腔中由單模量子場驅動的雙原子發射譜，結果表明初態為的雙原子發射譜與驅動場的相位無關；而初態為的雙原子發射譜不僅與光場的光子數分佈以及原子的布居數有關，而且依賴于光場的相位以及原子偶極矩的相位，並且在適當的條件下，壓縮真空場可將雙原子俘獲在相干疊加態。 -
The results show that under the condition of the squeezing - power - number being an any even number or the pruduct of the squeezing - power - number and the total cavity - mode - number being an any even number, if some certain and fixed conditions are satisfied respectively by the initial phase of each mode in the state or the sum of the initial phase of each mode in the same state mentioned above, by the initial phase difference between any two components in the state, and by the sum of mean photon - numbers, which are modulated by the initial phase of each mode in the state mentioned, of all the single mode coherent states light field, the state can always display the effect of generalized nonlinear equal - power n - th power y - squeezing, or present the effect of generalized nonlinear equal - power n - th power h - squeezing, that changes alternatively and periodically
結果發現：在壓縮次數取偶數或者壓縮次數與腔模總數這兩者之積取偶數的條件下，若各模的初始相位或者各模的初始相位和、態間的初始相位差以及受各模的初始相位調制的各單模相干態光場的平均光子數之總和等分別滿足一定的取值條件，則態| ~ （ （ 4 ） ） _ q的第一和第二這兩個正交相位分量總可分別呈現出周期性變化的、西北人學碩{ _學位論文摘要廣義非線性等冪次n次方y壓縮或者等冪次n次方h壓縮效應。 -
In quantum states which have squeezing effect, one quadrature phase may have reduced quantum fluctuations compared with what the relative quadrature phase have in coherent states, which makes it applied widely in optical communication systems, and so on. therefore, squeezed state of the radiation field is still a central topic in quantum optics
由於光場壓縮態在其某一正交分量具有比相干態更小的量子噪聲，因此，在實際應用中，如果用這一分量傳遞信息，則可得到比相干態光場更高的信噪比。 -
We clarified that if the three - level atom and the two - mode cavity field are all in the coherent superposition state, the different transition processes interfere each other, the emission spectrum exhibits phase sensitivity. second, the phase properties of the two - mode su ( 2 ) coherent field interacting with a - type three - level atom and the two - mode su ( 1, 1 ) coherent field interacting with two atoms are investigated
我們考察了雙模su （ 2 ）相干場與型三能級原子相互作用系統以及雙模su （ 1 ， 1 ）相干場與雙原子相互作用系統中雙模光場的相位性質，證明了光場每個j迄兇博士學位論文docioraldisser 」 i人lion -
In particular, squeezing effects, due to the quantum fluctuation of one quadrature phase smaller than that in coherent state, can be used in optical communication and other fields
特別是具有壓縮效應的量子態，由於在壓縮態中光場振幅的量子漲落小於相干態相應的量子漲落，使得它在光通訊等領域有著廣闊的應用前景。 -
It is found that whether the squeezing - power - number is an odd or even number, or whether the product of the squeezing - power - number and the total cavity - mode - number is an odd or even number, while some fixed conditions are satisfied respectively by the initial phase of each mode in the state or the sum of the initial phase of each mode in the same state, by the initial phase difference between any two components in the state and by the sum of mean photon - numbers, which are modulated by the initial phase of each mode in the state involved, of all the single mode coherent states light field, v the state can always display the effects of generalized nonlinear equal - power n - th power y - squeezing and unequal - power nj - th power y - squeezing, or present the effects of generalized nonlinear equal - power n - th power h - squeezing and unequal - power nj - th power h - squeezing, which changes alternatively and periodically
結果發現：無論壓縮次數或者壓縮次數與腔模總數這兩者之積取奇數還是取偶數，只要各模的初始相位或者各模的初始相位和、態間的初始相位差以及受各模的初始相位調制的各單模相干態光場的平均光子數之總和等分別滿足一定的取值條件，那麼態| _ 5 ~ （ （ 3 ） ） _ q的第一和第二這兩個正交相位分量就可分別呈現出周期性變化的、廣義非線性等冪次n次方y壓縮和不等冪次n _ j次方y壓縮或者等冪次n次方h壓縮和不等冪次n _ j次方h壓縮效應。 -
When the cavity field is initially in photon number state or mixed state, the emission spectrum of the two - level atom has nothing to do with the phase of the atomic dipole. if the cavity field is initially in the coherent superposition of photon number state, the emission spectrum of the two - level atom exhibits phase sensitivity. if a a - type three - level atom is initially in the coherent superposition of its two non - degenerate lower states, the emission spectrum depends on the phase of the atomic dipole
證明了初始時刻驅動場處于光子數態或者光子數的混合態時，二能級原子發射譜與原子偶極矩的相位無關，只有當驅動場初始時刻處于光子數的疊加態時，原子發射譜才依賴于原子偶極矩的相位；而初始時刻處于兩個下能態相干疊加態的型三能級原子發射譜對原子初態的依賴關系卻不受單模驅動場的影響。
分享友人