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arXiv quant-ph/9803077quant-ph
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分束器条件测量的量子态工程

Quantum state engineering using conditional measurement on a beam splitter

M. Dakna, L. Knoll, D. -G. Welsch

摘要:

研究了在分束器上通过条件输出测量进行态制备的方法,假设信号模与在Fock态中制备的模混合,并在其中一个输出通道中测量光子数。结果表明,在其他输出通道的模式是准备在一个光子减去或光子添加雅可比多项式状态,这取决于在输入Fock状态的光子数和输出Fock状态的光子数之间的差异,它被投射到。研究了相干态和压缩态条件输出态的性质,计算了产生条件输出态的几率。与其他状态,如近光子数态和压缩态激发的关系,并提出建议,通过与其他计划相结合,产生他们。最后讨论了真实光计数和Fock态制备的影响。

英文摘要:

State preparation via conditional output measurement on a beam splitter is studied, assuming the signal mode is mixed with a mode prepared in a Fock state and photon numbers are measured in one of the output channels. It is shown that the mode in the other output channel is prepared in either a photon-subtracted or a photon-added Jacobi polynomial state, depending upon the difference between the number of photons in the input Fock state and the number of photons in the output Fock state onto which it is projected. The properties of the conditional output states are studied for coherent and squeezed input states, and the probabilities of generating the states are calculated. Relations to other states, such as near-photon-number states and squeezed-state-excitations, are given and proposals are made for generating them by combining the scheme with others. Finally, effects of realistic photocounting and Fock-state preparation are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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