Erratum: Experimental realization of a concatenated Greenberger–Horne–Zeilinger state for macroscopic quantum superpositions

Uncertainty relations for the realization of macroscopic quantum superpositions and EPR paradoxes

Uncertainty relations for the realization of macroscopic quantum superpositions and EPR paradoxes

Journal of Modern Optics Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713191304 Uncertainty relations for the realization of macroscopic quantum superpositions and EPR paradoxes E. G. Cavalcanti a; M. D. Reid a a ARC Centre for Excellence for Atom-Optics, School of Physical Sciences, The University of Queen...

Macroscopic superpositions and gravimetry with quantum magnetomechanics

Precision measurements of gravity can provide tests of fundamental physics and are of broad practical interest for metrology. We propose a scheme for absolute gravimetry using a quantum magnetomechanical system consisting of a magnetically trapped superconducting resonator whose motion is controlled and measured by a nearby RF-SQUID or flux qubit. By driving the mechanical massive resonator to ...

Signatures for generalized macroscopic superpositions.

We develop criteria sufficient to enable detection of macroscopic coherence where there are not just two macroscopically distinct outcomes for a pointer measurement, but rather a spread of outcomes over a macroscopic range. The criteria provide a means to distinguish a macroscopic quantum description from a microscopic one based on mixtures of microscopic superpositions of pointer-measurement e...

Decoherence bypass of macroscopic superpositions in quantum measurement

We study a class of quantum measurement models. A microscopic object is entangled with a macroscopic pointer such that a distinct pointer position is tied to each eigenvalue of the measured object observable. Those different pointer positions mutually decohere under the influence of an environment. Overcoming limitations of previous approaches we (i) cope with initial correlations between point...