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The JCM with initial number-phase minimum uncertainty state field

Gau Ju, Shiqun Li

Published Oct 1, 1990• 0 citations
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Related papers

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Equal-order N-H Minimum Uncertainty State in Multi-mode Light Field State of Superimpositions State with Two Quantum States

XI Cai-ping

In this paper,by utilizing the theory of multi-squeezed states,the conditions of Equal-order N-H uncertainty state and Equal-order N-H minimum uncertainty state on multi-mode light field state of differ intensity of nonsymmetry superimpositions state with distinguishable two quantum states are studied.It finds out(1) when qN is even the intensity and the initial phase is all equal,the light field state always presents Equal-order N-H minimum uncertainty state;(2) the intensity and the initial phase are not equal,but under certain conditions,the light field state also presents Equal-order N-H minimum uncertainty state.

•Jan 1, 2006•0 citations

Realization of number-phase minimum-uncertainty states and number states by quantum nondemolition measurement

Masahiro Kitagawa, N. Imoto, Y. Yamamoto

Number-phase minimum uncertainty states and number states are shown to be realized by quantum nondemolition measurements of the photon number. Interphase modulation in a Kerr medium establishes a quantum-mechanical correlation between the signal and probe waves initially in coherent states. State reduction is realized by homodyne detection of a probe quadrature-phase amplitude. The number uncertainty can be arbitrarily reduced by increasing the probe intensity. The minimum uncertainty relation between the number and sine operators approximately holds until a near-number state is realized.

Physical Review A•Jun 1, 1987•48 citations

Minimum Uncertainty States

Pankaj Sharan

Lecture notes in physics•Jan 1, 2023•0 citations
In this paper,by utilizing the theory of multi-squeezed states,the conditions of Equal-order N-H uncertainty state and Equal-order N-H minimum uncertainty state on multi-mode light field state of differ intensity of nonsymmetry superimpositions state with distinguishable two quantum states are studied.It finds out(1) when qN is even the intensity and the initial phase is all equal,the light field state always presents Equal-order N-H minimum uncertainty state;(2) the intensity and the initial phase are not equal,but under certain conditions,the light field state also presents Equal-order N-H minimum uncertainty state.
Number-phase minimum uncertainty states and number states are shown to be realized by quantum nondemolition measurements of the photon number. Interphase modulation in a Kerr medium establishes a quantum-mechanical correlation between the signal and probe waves initially in coherent states. State reduction is realized by homodyne detection of a probe quadrature-phase amplitude. The number uncertainty can be arbitrarily reduced by increasing the probe intensity. The minimum uncertainty relation between the number and sine operators approximately holds until a near-number state is realized.