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Showing 2007 · quant-phShow all
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quant-ph2007★ 8 cited
The Quadratic Spin Squeezing Operators
P. K. Pathak, R. N. Deb, N. Nayak +1
We discuss generic spin squeezing operators (quadratic in angular momentum operators) capable of squeezing out quantum mechanical noise from a system of two-level atoms (spins) in…
quant-ph2007★ 13 cited
Optimality of minimum-error discrimination by the no-signalling condition
Joonwoo Bae, Jae-Weon Lee, Jaewan Kim +1
In this work we relate the well-known no-go theorem that two non-orthogonal (mixed) quantum states cannot be perfectly discriminated, to the general principle in physics, the no-si…