منابع مشابه
Relations between bosonic quadrature squeezing and atomic spin squeezing
Xiaoguang Wang and Barry C. Sanders Department of Physics and Australian Centre of Excellence for Quantum Computer Technology, Macquarie University, Sydney, New South Wales 2109, Australia Department of Physics and Center for Nonlinear Studies, Hong Kong Baptist University, Hong Kong, China Quantum Information Science Group, Department of Physics and Astronomy, University of Calgary, Alberta, C...
متن کاملVacuum spin squeezing
We investigate the generation of entanglement (spin squeezing) in an optical-transition atomic clock through the coupling to an optical cavity in its vacuum state. We show that if each atom is prepared in a superposition of the ground state and a long-lived electronic excited state, and viewed as a spin-1/2 system, then the collective vacuum light shift entangles the atoms, resulting in a squee...
متن کاملQuantum spin squeezing
This paper reviews quantum spin squeezing, which characterizes the sensitivity of a state with respect to SU(2) rotations, and is significant for both entanglement detection and high-precision metrology. We first present various definitions of spin squeezing parameters, explain their origin and properties for typical states, and then discuss spinsqueezed states produced with nonlinear twisting ...
متن کاملEntanglement and extreme spin squeezing.
For any mean value of a Cartesian component of a spin vector we identify the smallest possible uncertainty in any of the orthogonal components. The corresponding states are optimal for spectroscopy and atomic clocks. We show that the results for different spin J can be used to identify entanglement and to quantify the depth of entanglement in systems with many particles. With the procedure deve...
متن کاملSqueezing in Multivariate Spin Systems
In contrast to the canonically conjugate variates q,p representing the position and momentum of a particle in the phase space distributions , the three Cartesian components, J x ,J y , J z of a spin-j system constitute the mutually non-commuting variates in the quasi-probabilistic spin distributions. It can be shown that a univariate spin distribution is never squeezed and one needs to look int...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2007
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.76.043621