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
We review our recent experimental progress in quantum technology employing amplification effect of four-wave mixing in a rubidium vapor. We have produced an intensity difference squeezed light source at frequencies as...We review our recent experimental progress in quantum technology employing amplification effect of four-wave mixing in a rubidium vapor. We have produced an intensity difference squeezed light source at frequencies as low as 1.5 kHz which is so far the lowest frequency at which squeezing has been observed in an atomic system. Moreover, we find that the bandwidth of our squeezed light source can be controlled with light intensity pumping. Using our non-classical light source, we have further developed a nonlinear Mach-Zehnder (MZ) interferometer, for which the maximum fringe intensity depends quadratically on the intensity of the phase-sensing field at the high-gain regime, leading to much better sensitivity than a linear MZ interferometer in which the beam splitters have the same phase-sensing intensity. The quantum technologies developed by our group could have great potential in areas such as precision measurement and quantum information.展开更多
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 Basic Research Program of China (2011CB921604 and 2011CB921602)the National Natural Science Foundation of China (10974057, 11004057, 11004058, 11004059, 11034002and 10874045)+6 种基金Shanghai Pujiang Program (09PJ1404400)the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learningthe Program for New Century Excellent Talents in University (NCET-10-0383)"Shu Guang" Project of Shanghai Municipal Education Commission and Shanghai Education Development Foundation (11SG26)the Scientific Research Foundation for the Returned Overseas Chinese Scholars (State Education Ministry)the "Chen Guang" Project of Shanghai Municipal Education Commissionthe Shanghai Education Development Foundation (10CG24)
文摘We review our recent experimental progress in quantum technology employing amplification effect of four-wave mixing in a rubidium vapor. We have produced an intensity difference squeezed light source at frequencies as low as 1.5 kHz which is so far the lowest frequency at which squeezing has been observed in an atomic system. Moreover, we find that the bandwidth of our squeezed light source can be controlled with light intensity pumping. Using our non-classical light source, we have further developed a nonlinear Mach-Zehnder (MZ) interferometer, for which the maximum fringe intensity depends quadratically on the intensity of the phase-sensing field at the high-gain regime, leading to much better sensitivity than a linear MZ interferometer in which the beam splitters have the same phase-sensing intensity. The quantum technologies developed by our group could have great potential in areas such as precision measurement and quantum information.
