Testing the limits of quantum mechanical superpositions

Abstract

Quantum physics has intrigued scientists and philosophers alike, because it challenges our notions of reality and locality--concepts that we have grown to rely on in our macroscopic world. It is an intriguing open question whether the linearity of quantum mechanics extends into the macroscopic domain. Scientific progress over the last decades inspires hope that this debate may be decided by table-top experiments.

16 pages, 4 Figures; published version differs by minor editorial changes

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• 14-qubit entanglement: creation and coherence
• Experimental long-lived entanglement of two macroscopic objects
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• Quantum teleportation between light and matter
• Atom chip based generation of entanglement for quantum metrology
• Quantum Entanglement of High Angular Momenta
• Dynamical Reduction Models
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• Universality of Quantum Gravity Corrections
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• Cavity optomechanics using an optically levitated nanosphere
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• Macroscopicity of Mechanical Quantum Superposition States
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• Concept of an ionizing time-domain matter-wave interferometer
• Lorentz invariant intrinsic decoherence
• The size of macroscopic superposition states in flux qubits
• Observation of interference between two molecular Bose-Einstein condensates
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