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Showing 2012 · quant-phShow all
3 papers · 2 filters
quant-ph2012★ 21 cited
Procedures for realizing an approximate universal NOT gate
Jeongho Bang, Seung-Woo Lee, Hyunseok Jeong +1
We consider procedures to realize an approximate universal NOT gate in terms of average fidelity and fidelity deviation. The average fidelity indicates the optimality of operation…
quant-ph2012★ 37 cited
Generating a Schrödinger-cat-like state via a coherent superposition of photonic operations
Chang-Woo Lee, Jinhyoung Lee, Hyunchul Nha +1
We propose an optical scheme to generate a superposition of coherent states with enhanced size adopting an interferometric setting at the single-photon level currently available in…
quant-ph2012★ 28 cited
Critical behavior in ultra-strong-coupled oscillators
Vivishek Sudhir, Marco G. Genoni, Jinhyoung Lee +1
We investigate the strong coupling regime of a linear - coupled harmonic oscillator system, by performing a direct diagonalization of the hamiltonian. It is shown that the $x…