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|Title:||Quantum synchronization over quantum networks|
|Citation:||Journal of Physics A: Mathematical and Theoretical (Print Edition), 2010; 43(46):1-20|
|Publisher:||IOP Publishing Ltd|
|M A Lohe|
|Abstract:||We consider a network of quantum oscillators in which quantum states are distributed among connected nodes by means of unitary transformations. The distributed states interact with each local state according to a time-dependent interaction Hamiltonian, which is modeled by a Hermitian operator constructed in terms of the states themselves, thereby introducing nonlinear network interactions. For qubit nodes of differing natural frequencies, we show numerically that for a sufficiently large coupling constant, synchronization of quantum nodes occurs in which the spins of all qubits are mutually aligned with a common frequency of oscillation, following initial transient configurations. We discuss the significance of quantum synchronization as a means to create copies of unknown quantum states.|
|Rights:||© 2010 IOP Publishing Ltd.|
|Appears in Collections:||Physics publications|
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