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Color Code with a Logical Control-S Gate Using Transversal T Rotations
1IBM Denmark, T. J. Watson Research Center, IBM Quantum, Yorktown Heights, New York 10598, USA and , Sundkrogsgade 11, 2100 Copenhagen, Denmark.
Abstract:
The color code has been invaluable for the development of the theory of fault-tolerant logic gates using transversal rotations. Three-dimensional examples of the color code have shown us how its structure, specifically the intersection of the supports of logical operators, can give rise to non-Clifford T and CCZ gates. Here we present a color code with a logical control-S gate that is accomplished with transversal T and T^{†} rotations on its physical qubits.
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