Abstract
A quantum computer is composed of quantum bits that can support superposition states and hence allow parallel processing for certain problems such as factorization.1 All quantum computations can, in principle, be reduced to a series of two-bit quantum logic gates accompanied by simple single-bit rotations. An example of a two-bit quantum logic gate is the controlled-NOT (CN) gate, which rotates one quantum bit by 180° dependent on the state of a second quantum bit. We demonstrate operation of a two- bit CN quantum logic gate on a trapped ion.2
© 1996 Optical Society of America
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