本文利用简并光学参量振荡器实验制备了光通信波段1.5μm压缩真空态光场,压缩度为(5.03±0.13) d B。将已制备的1.5μm压缩真空态光场和同频率本地振荡光采用偏振复用的方式耦合注入单模光纤中进行传输,在理论和实验上研究了压缩真...本文利用简并光学参量振荡器实验制备了光通信波段1.5μm压缩真空态光场,压缩度为(5.03±0.13) d B。将已制备的1.5μm压缩真空态光场和同频率本地振荡光采用偏振复用的方式耦合注入单模光纤中进行传输,在理论和实验上研究了压缩真空态光场在光纤信道传输过程中经典和量子特性的演化,并讨论了本地振荡光在光纤信道中引起的声导波布里渊散射对传输过程的压缩真空态光场影响。实验测量了1.5μm压缩真空态光场在单模光纤中传输距离为8 km时,压缩度为0.14 dB,压缩特性仍得到保持。该研究为实现基于光纤的城域量子信息网络等奠定基础。展开更多
O431 94020762压缩真空激发态的相位性质=Phase propertiesof the state generated by excitation on thesqueezed vacuum state[刊,中]/张中熙(东南大学物理系)//东南大学学报.-1993,23(6).-77～82压缩真空激发态是一种具有丰富的非经...O431 94020762压缩真空激发态的相位性质=Phase propertiesof the state generated by excitation on thesqueezed vacuum state[刊,中]/张中熙(东南大学物理系)//东南大学学报.-1993,23(6).-77～82压缩真空激发态是一种具有丰富的非经典性质的态,可由压缩真空光场与激发原子间的多光子作用产生。为进一步研究压缩真空激发态的相位性质,计算了这种态中Susskind相位算符期待值,并分别讨论了压缩参数较小和较大时粒子数:相位不确定关系。参10(严寒)展开更多
O431 99052802光场压缩态的产生和应用=Generation of opticalfield squeeze state and its applications[刊,中]/潘庆,王海,张云,苏红,谢常德,彭坤墀(山西大学光电研究所.山西,太原(030006))//量子光学学报.—1998,4(4).—187提出了应...O431 99052802光场压缩态的产生和应用=Generation of opticalfield squeeze state and its applications[刊,中]/潘庆,王海,张云,苏红,谢常德,彭坤墀(山西大学光电研究所.山西,太原(030006))//量子光学学报.—1998,4(4).—187提出了应用孪生光束进行亚散粒噪声极限的微弱吸收测量方案,用半经典理论证明了信噪比的提高正比于强度差压缩度,获得压缩度为57%的正交双模压缩真空态光场和强度差压缩度为88%频率非简并的量子相关孪生光子对。(李瑞琴)O431 99052803用分束器实现强度差起伏量子测置的理论与实验研究=Theoretical and experimental study of quan-展开更多
Quantum entanglement dynamics of two Tavis-Cummings atoms interacting with the quantum light sourcesin a cavity is investigated.The results show the phenomenon that the concurrence disappears abruptly in a finite time...Quantum entanglement dynamics of two Tavis-Cummings atoms interacting with the quantum light sourcesin a cavity is investigated.The results show the phenomenon that the concurrence disappears abruptly in a finite time,which depends on the initial atomic states and the properties of squeezed states.We find that there are two decoherencefreestates in squeezed vacuum fields:one is the singlet state,and the other entangled state is the state that combinesboth excited states and ground states with a relative phase being equal to the phase of the squeezed state.展开更多
文摘本文利用简并光学参量振荡器实验制备了光通信波段1.5μm压缩真空态光场,压缩度为(5.03±0.13) d B。将已制备的1.5μm压缩真空态光场和同频率本地振荡光采用偏振复用的方式耦合注入单模光纤中进行传输,在理论和实验上研究了压缩真空态光场在光纤信道传输过程中经典和量子特性的演化,并讨论了本地振荡光在光纤信道中引起的声导波布里渊散射对传输过程的压缩真空态光场影响。实验测量了1.5μm压缩真空态光场在单模光纤中传输距离为8 km时,压缩度为0.14 dB,压缩特性仍得到保持。该研究为实现基于光纤的城域量子信息网络等奠定基础。
文摘O431 94020762压缩真空激发态的相位性质=Phase propertiesof the state generated by excitation on thesqueezed vacuum state[刊,中]/张中熙(东南大学物理系)//东南大学学报.-1993,23(6).-77～82压缩真空激发态是一种具有丰富的非经典性质的态,可由压缩真空光场与激发原子间的多光子作用产生。为进一步研究压缩真空激发态的相位性质,计算了这种态中Susskind相位算符期待值,并分别讨论了压缩参数较小和较大时粒子数:相位不确定关系。参10(严寒)
文摘O431 99052802光场压缩态的产生和应用=Generation of opticalfield squeeze state and its applications[刊,中]/潘庆,王海,张云,苏红,谢常德,彭坤墀(山西大学光电研究所.山西,太原(030006))//量子光学学报.—1998,4(4).—187提出了应用孪生光束进行亚散粒噪声极限的微弱吸收测量方案,用半经典理论证明了信噪比的提高正比于强度差压缩度,获得压缩度为57%的正交双模压缩真空态光场和强度差压缩度为88%频率非简并的量子相关孪生光子对。(李瑞琴)O431 99052803用分束器实现强度差起伏量子测置的理论与实验研究=Theoretical and experimental study of quan-
基金Supported by the National Natural Science Foundation of China under Grant Nos. 10974125, 60978017, and 60821004in part by the Educational Committee of Fujian Province (JA09041)Fujian Normal University (2008100220)
文摘Quantum entanglement dynamics of two Tavis-Cummings atoms interacting with the quantum light sourcesin a cavity is investigated.The results show the phenomenon that the concurrence disappears abruptly in a finite time,which depends on the initial atomic states and the properties of squeezed states.We find that there are two decoherencefreestates in squeezed vacuum fields:one is the singlet state,and the other entangled state is the state that combinesboth excited states and ground states with a relative phase being equal to the phase of the squeezed state.
