Decoherence-free quantum dynamics in circuit QED system

Details Decoherence-free quantum dynamics in circuit QED system Decoherence-free quantum dynamics in circuit QED system

2009-03-10

arxiv.org/abs/0903.1774v1

Physics

Quantum Physics

5 pages, 1 figure

Scientific paper

We study decoherence in a circuit QED system consisting of a charge qubit and two superconducting transmission line resonators (TLRs). We show that in the dispersive regime of the circuit QED system one TLR can be used as an auxiliary subsystem to realize decoherence-free quantum dynamics of the bipartite target system consisting of the charge qubit and the other TLR conditioned on the auxiliary TLR initially being a proper number state. Our study gives new insight into control and manipulation of decoherence in quantum systems.

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