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- Clive Emary, Tobias Brandes
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2003

We investigate the quantum-chaotic properties of the Dicke Hamiltonian; a quantum-optical model that describes a single-mode bosonic field interacting with an ensemble of N two-level atoms. Thisâ€¦ (More)

In contrast to the spatial Bellâ€™s inequalities which probe entanglement between spatially separated systems, the Leggettâ€“Garg inequalities test the correlations of a single system measured atâ€¦ (More)

- Xiaodong Xu, Yanwen Wu, +7 authors L. J. Sham
- Physical review letters
- 2007

Quantum computation requires a continuous supply of rapidly initialized qubits for quantum error correction. Here, we demonstrate fast spin state initialization with near unity efficiency in a singlyâ€¦ (More)

- Clive Emary, Tobias Brandes
- Physical review letters
- 2003

We consider the Dicke Hamiltonian, a simple quantum-optical model which exhibits a zero-temperature quantum phase transition. We present numerical results demonstrating that at this transition theâ€¦ (More)

Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright Â© and Moral Rights for theâ€¦ (More)

- Carlo W. J. Beenakker, David P. DiVincenzo, Clive Emary, Maik Kindermann
- Physical review letters
- 2004

It is known that a quantum computer operating on electron-spin qubits with single-electron Hamiltonians and assisted by single-spin measurements can be simulated efficiently on a classical computer.â€¦ (More)

- Costantino Budroni, Clive Emary
- Physical review letters
- 2014

We show that the quantum bound for temporal correlations in a Leggett-Garg test, analogous to the Tsirelson bound for spatial correlations in a Bell test, strongly depends on the number of levels Nâ€¦ (More)

- Neill Lambert, Clive Emary, Yueh-Nan Chen, Franco Nori
- Physical review letters
- 2010

We consider the question of how to distinguish quantum from classical transport through nanostructures. To address this issue we have derived two inequalities for temporal correlations inâ€¦ (More)

- V M Bastidas, Clive Emary, Brian Regler, Tobias Brandes
- Physical review letters
- 2012

We establish a set of nonequilibrium quantum phase transitions in the Dicke model by considering a monochromatic nonadiabatic modulation of the atom-field coupling. For weak driving the systemâ€¦ (More)

The mechanism used by migratory birds to orientate themselves using the geomagnetic field is still a mystery in many species. The radical pair mechanism, in which very weak magnetic fields canâ€¦ (More)