Reduction of Quantum Phase Fluctuations in Intermediate States

نویسندگان

  • Amit Verma
  • Anirban Pathak
چکیده

Recently we have shown that the reduction of the Carruthers-Nieto symmetric quantum phase uctuation parameter (U) with respect to its coherent state value corresponds to an antibunched state, but the converse is not true. Consequently reduction of U is a stronger criterion of nonclassicality than the lowest order antibunching. Here we have studied the possibilities of reduction of U in intermediate states by using the Barnett Pegg formalism. We have shown that the reduction of phase uctuation parameter U can be seen in di erent intermediate states, such as binomial state, generalized binomial state, hypergeometric state, negative binomial state, and photon added coherent state. It is also shown that the depth of nonclassicality can be controlled by various parameters related to intermediate states. Further, we have provided speci c examples of antibunched states, for which U is greater than its poissonian state value. PACS number(s): 42.50.Lc, 42.50.Ar, 42.50.-p

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تاریخ انتشار 2008