Measurement of Conditional Phase Shifts for Quantum Logic
Q. A. TurchetteNorman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125C. J. HoodNorman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125W. LangeNorman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125Hideo MabuchiNorman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125H. J. KimbleNorman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125
1995en
ABI
Annotatsiya
Measurements of the birefringence of a single atom strongly coupled to a high-finesse optical resonator are reported, with nonlinear phase shifts observed for an intracavity photon number much less than one. A proposal to utilize the measured conditional phase shifts for implementing quantum logic via a quantum-phase gate (QPG) is considered. Within the context of a simple model for the field transformation, the parameters of the "truth table" for the QPG are determined.
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