Phys. Rev. A 47, 5138–5143 (1993)Squeezed spin statesReceived 3 December 1992; published in the issue dated June 1993 The basic concept of squeezed spin states is established and the principles for their generation are discussed. Two proposed mechanisms, referred to as one-axis twisting and two-axis countertwisting, are shown to reduce the standard quantum noise S/2 of the coherent S-spin state down to 1/2(S/3)1/3 and 1/2, respectively. Implementations of spin squeezing in interferometers are also discussed. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.47.5138
DOI:
10.1103/PhysRevA.47.5138
PACS:
42.50.Dv, 03.65.Bz
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