Spin squeezing and quantum correlations |
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Authors: | KS Mallesh Swarnamala Sirsi Mahmoud AA Sbaih PN Deepak G Ramachandran |
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Affiliation: | (1) Department of Studies in Physics, University of Mysore, 570 006 Mysore, India;(2) Department of Physics, Yuvaraja’s College, University of Mysore, 570 005 Mysore, India;(3) Indian Institute of Astrophysics, 560 034 Bangalore, India |
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Abstract: | We discuss the notion of spin squeezing considering two mutually exclusive classes of spin-s states, namely, oriented and non-oriented states. Our analysis shows that the oriented states are not squeezed while non-oriented states exhibit squeezing. We also present a new scheme for construction of spin-s states using 2s spinors oriented along different axes. Taking the case of s=1, we show that the ‘non-oriented’ nature and hence squeezing arise from the intrinsic quantum correlations that exist among the spinors in the coupled state. |
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Keywords: | Squeezing spin quantum correlation |
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