7 May 2015 Pulse-controlled quantum gate sequences on a strongly coupled qubit chain
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Abstract
We propose a selective dynamical decoupling scheme on a chain of permanently coupled qubits, which is capable of dynamically suppressing any coupling in the chain by applying sequences of local pulses to the individual qubits. We demonstrate how this pulse control can be used to implement the two-qubit CNS gate on any two neighboring qubits. A sequence of these CNS gates is then applied on the chain to entangle all the qubits in a GHZ state. We find that high entanglement fidelities can be achieved as long as the total number of coupled qubits is not too large.
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Holger Frydrych, Michael Marthaler, Gernot Alber, "Pulse-controlled quantum gate sequences on a strongly coupled qubit chain", Proc. SPIE 9505, Quantum Optics and Quantum Information Transfer and Processing 2015, 95050G (7 May 2015); doi: 10.1117/12.2178545; https://doi.org/10.1117/12.2178545
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