Quantum controlled-NOT gate with ‘hot’ trapped ions
Sara Schneider, Daniel F. V. James, Gerard J Milburn · Journal of Modern Optics · 2000
We present a novel method of performing quantum logic gates in trapped ion quantum computers which does not require the ions to be cooled down to the ground state of their vibrational modes, thereby avoiding one of the principal experimental difficulties encountered in realizing this technology. Our scheme employs adiabatic passages and a phase shift conditional on the phonon number state.