相位相干態 的英文怎麼說

中文拼音 [xiāngwèixiānggāntài]
相位相干態 英文
phase coherent state
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 位 : Ⅰ名詞1 （所在或所佔的地方） place; location 2 （職位; 地位） position; post; status 3 （特指皇帝...
  • 干 : 干Ⅰ名詞1 （事物的主體或 重要部分） trunk; main part 2 （幹部的簡稱） short for cadre Ⅱ動詞1 （做...
  • 態 : 名詞1. （形狀; 狀態） form; condition; appearance 2. [物理學] （物質結構的狀態或階段） state 3. [語言學] （一種語法范疇） voice
  • 相位 : phase position; phase
  • 相干 : 1 （多用於否定句或疑問句） have to do with; be concerned with 2 [物理學] coherent; 相干散射 coher...
  1. The specific research methods are listed : 1. matched filter taking the max ouput snr as the best rule correlates nonstop divided signal and divided echo to detect low snr target signal. then all one dimension divided correlation outs and done fft in portrait to leach interferential signal such as static or low rate mussy meaves, many pathway echo and so on and to take target ' s time difference and doppler frequency that combine parameters that target ' s direction taken from antenna and so on to implement target ' s orientation and tracking

    具體研究方法如下： 1 、採用以輸出信噪比最大為準則的最佳匹配濾波器來對分段的參考和目標信號作相關處理來檢測低信噪比目標信號，然後對一維分段相關輸出組作縱向傅立葉變換來濾除靜態或低速的雜波、多徑回波等干擾信號，並提取目標的時差和多普勒頻率，再結合由天線獲得的目標方向等參數，就可以實現目標的定位和跟蹤。
  2. 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。
  3. Abstract : we have studied the spontaneous emission from a three - level atom with an external - driving field in a photonic crystal. as a result of quantum interference and photon localization, the population in the two upper levels displays quasi - oscillatory oroscillatory behavior. this depends on the initial atomic state and the relative positions of the two upper levels from the forbidden gap. the intensity and the phase of the external field can affect spontaneous emission from the atom. the properties are different from a three - level atom either in vacuum or in aphotonic crystal without an external driving field

    文摘:討論了在雙光子驅動場作用下，三能級原子在光子晶體中的自發發射問題.由於量子干涉和光的局域化作用，兩個上能級中的占據數將具有周期振蕩或準周期振蕩的性質，這不僅依賴于兩個上能級與禁帶的相對位置，同時也依賴于原子的初始狀態，而且還與驅動場的強度、驅動場的入射位相有關.這些性質既與真空中帶有驅動場的原子的自發發射性質不同，也有別于無驅動場作用下光子晶體中三能級原子的自發發射性質
  4. 2 ) set threshold in stationary wavelet domain to separate edge and noise, estimated wavelet coefficients in texture area to reconstruct the interferogram

    3 ）在靜態小波域設置濾波閾值以區分邊緣和噪聲，根據map準則來確定信號的小波系數，然後重建干涉相位圖。
  5. On the one hand, we deduce the off - diagonal term of reduced density matrix is inner - product of two coherent states and we carry out decoherence in macroscopic limits in two special case, on the other hand, we delay decoherent time by controlling the interaction coefficient. in other part, we define two kind independent phase operators by improving two - mode squeezing coherent states in two - mode phase space and resolve their eigenstates

    在第二部分中，我們在雙模相位空間里利用雙模壓縮相干態所對應的算符定義二類獨立的相位算符並相應求出本徵態，而它的產生算符和湮滅算符是通過簡諧振子的產生算符和湮滅算符經過正則變換得到的。
  6. We have separated the dark state a nd bright state, which are both the superposition states of the ground states. between the dark and bright states there is a unidirectional pathway of population transfer from the bright to dark state. as a consequence, the population transfer leads to cpt

    在暗態和亮態之間，有一條從亮態向暗態轉移布居的單向兩步通道，這個通道把原子布居轉古巴大碩士學位論文wn4as aer 』 s7ffesls移到暗態，從而產生原子布居的相干捕獲。
  7. Statistical phase properties of generalized coherent states of the non - harmonic oscilator

    非簡諧振子廣義相干態的位相統計性質
  8. Next we consider the effect of the coupling field linewidth to electromagnetically induced absorption, by employing a four - level system in which three transitions are in n configuration and the middle transition serves as a probe transition, we find that coupling field linewidth inhibits electromagnetically induced absorption

    碩士學位論文master 』 st } iesis其次，本文研究在裸態下，考慮禍合場線寬對原子相干的作用，進一步揭示了禍合場線寬抑制電磁誘導吸收。這與禍合場線寬增強eit的吸收形成鮮明的對比。
  9. The resolution of optical system can not reach its diffraction limit because of the phase aberrations caused by atmospheric turbulence and other wavefront errors. adaptive optics technology uses deformable mirrors to perform dynamic phase modulation and endow optical system the ability to decrease the influence of dynamic wavefront errors

    大氣湍流等動態干擾使光波面相位發生畸變，使光學系統的解析度無法達到其衍射極限，而自適應光學系統使用變形鏡對光波面進行動態相位調制，賦予了光學系統能動可變的能力而有效地解決了動態干擾的問題。
  10. We deduce easily the coherent term of quantum dynamical model ( the off - diagonal of reduced density matrix ) by improving the nature of displace operator and the nature of coherent states. then, the interaction is energies of a two - photon mechanism and the usual one - photon or liner driving mechanism. we deduce the coherent term by improving the nature of squeezing operators, displace operators and canonical transformation

    其一，僅有阻尼相互作用和勢能相互作用，此時利用位移算符的性質和相干態的性質很方便地推導了量子動力學模型的相干項（約化密度矩陣的非對角元） ；其二，考慮的是既有單光子相互作用又有雙光子相互作用，這時利用相干態、壓縮算符及正則變換等的性質推導出相干項。
  11. Third, the whole absorption spectrum displays, in general, three pairs of absorption peaks and three pairs of gain peaks. due to the coherences between dressed states, these peaks are not exactly at the resonant resonance frequencies between dressed states, but in the vicinity of them

    還有一個特徵就是，吸收光譜在一般情況下會出現三對吸收峰和三對增益峰，在修飾態相干的作用下，這些峰並不是位於修飾態共振躍遷頻率處，而是位於它們鄰域附近。
  12. 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。
  13. The filtered results to a real interferogram showed the proposed method is powerful to interferogram speckle noise reduction, as well as it can preserve fine details in the interferogram that are directly related to the ground topography and maintain phase values distribution

    對一幅干涉相位圖的濾波結果表明，該演算法很好的抑制了斑點噪聲，極大的降低了殘余點的數量，保持了條紋邊緣和相位細節信息，並使絕對相位保持在一定的動態范圍。
  14. The sensor can compress phase till hundreds of times and extends the range of dynamic measurement. the formulas of light path is presented

    該干涉儀使調制相位被壓縮了上百倍，提高了線性度，擴大了動態測量范圍。
  15. In allusion to the two - way traffic artery, the dynamic optimization model which adopt cycle length, split and offsets as the decision variables is established, and the simulation is conducted in a dynamic traffic demand mode

    針對一種雙向交通的飽和交通干線系統，建立了以信號周期、綠信比和相位差為優化控制變量的交通流動態優化控制模型。並在一種動態的交通需求模式下進行了模擬研究，結果表明所提方法的有效性。
  16. Because it utilizes phase - shift technology, it is invariant to fiber bending and stray light and has a wide dynamic range of optical intensity as well as low optical and electronic crosstalk, and low drift and phase noise

    這是因為它運用了相位移動的技術，它不會因為光纖的彎曲、離散而變化，它有很廣的光強度動態范圍，同時，具備低光率和電子色度干擾，也擁有移動和相位低噪音的特性。
  17. 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。
  18. Under an appropriate condition, the squeezed vacuum field can trap the two atoms in ri ). an analytical expression of emission spectrum for three - level atom interacted with two - mode cavity field is given. the effects of the initial state of system on the emission spectrum for three - level atom are explored

    我們給出了好腔中與雙模腔場相互作用的三能級原子發射譜的一般表達式，探討了系統初態對三能級原子發射譜的影響，闡明了只有原子和雙模驅動場初始時刻均處于相干疊加態，原子不同躍遷通道間的量子干涉才使得原子發射譜呈現相位敏感性。
  19. 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。
  20. The experimental results show that coherent light is unnecessary, the dynamic characteristic is good and the structure is compact. it is insensitive to temperature, pressure and electromagnetic disturbance and there is no special requirement for the object. it is suitable for industrial online measurement and promising in the future application

    實驗表明，該位移傳感器不需使用相干光源、動態特性好、結構緊湊、不受溫度、壓力、電磁干擾等外界環境的影響，對被測物體也無特殊要求，適用於工業現場測量，有著很好的應用前景。
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