Engineering desired operations on qubits subjected to the deleterious effects of their environment is a critical task in quantum information processing, quantum simulation and sensing. The most common approach relies on open-loop quantum control techniques, including optimal-control algorithms based on analytical or numerical solutions, Lyapunov design and Hamiltonian engineering. An alternative strategy, inspired by the success of classical control, is feedback control. Because of...
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For online diamond seller Blue Nile, brick and mortar stores may be key to millennials’ wallets
Blue Nile’s foray into brick and mortar stores has officially graduated from “experiment” to “initiative,” according to Harvey Kanter, CEO of the online diamond seller. The company already has one physical location, and it plans to grow to about five stores in 2016. By 2017, Kanter says physical locations may be...