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AssigneeKabushiki Kaisha Toshiba
InventorsSatoshi Nakamura, Kouichi Ichimura, Hayato Goto
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An operating method for stimulated Raman adiabatic passage to change probability amplitude in a three-level system including states of |0>, |1> and |e>, includes the following two steps. One is to direct a first laser beam and a second laser beam which have frequencies in the vicinity of resonance frequencies corresponding to energy differences between |0> and |e> and between |1> and |e>, respectively. The other is to change temporally two-photon detuning to be a difference between first detuning and second detuning. The first detuning is a difference between a first energy difference and a frequency of the first laser beam. The first energy difference is a difference between energy of |0> and energy of |e>. The second detuning is a difference between a second energy difference and a frequency of the second laser beam. The second energy difference is a difference between energy of |1> and energy of |e>.
An operating method for stimulated Raman adiabatic passage to change probability amplitude of a state |0> and a state |1> used for qubits in a three-level system X including three states of |0>, |1> and |e> in ascending order of energy levels, comprising:
A method for phase gate operation to rotate a relative phase between a state |0> and a state |1> in a four-level system X including four states of |0>, |1>, |2> and |e> in ascending order of energy levels, comprising:
Dependencies are inferred from the claim text.