内容: Decoherence, often caused by unavoidable coupling with the environment, leads to degradation of quantum coherence. For a multipartite quantum system, decoherence leads to degradation of entangl...
内容: We describe a simple and solvable model of a device that—like the ‘‘neat-fingered being’’ in Maxwell’s famous thought experiment—transfers energy from a cold system to a hot system by re...
内容: Quantum mechanics promises extraordinary capabilities for computation and cryptography. However, quantum information is not only fragile, but also impossible to verify directly for classical be...
内容: We prepare a maximally entangled state of two ions and couple both ions to the mode of an optical cavity. The phase of the entangled state determines the collective interaction of the ions with...
内容: The robust generation of quantum states in the presence of decoherence is a primary challenge for explorations of quantummechanics at larger scales. Using themechanicalmotion of a single trappe...
内容: I will present an overview of the derivation of free quantum field theory (QFT) from general principles, without assuming mechanical notions and Lorentz symmetry. The framework resulting from t...