613 citations
- University of British ColumbiaCA63 papers
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5 papers · 1 filter
Quantum spin glass in anisotropic dipolar systems
M. Schechter, P. C. E. Stamp, N. Laflorencie
The spin-glass phase in the $\LHx$ compound is considered. At zero transverse field this system is well described by the classical Ising model. At finite transverse field deviation…
Quantum insulating states of F=2 cold atoms in optical lattices
Fei Zhou, Gordon W. Semenoff
In this Letter we study various spin correlated insulating states of F=2 cold atoms in optical lattices. We find that the effective spin exchange interaction due to virtual hopping…
Decoherence and Quantum Walks: anomalous diffusion and ballistic tails
Nikolay Prokof'ev, Philip Stamp
The common perception is that strong coupling to the environment will always render the evolution of the system density matrix quasi-classical (in fact, diffusive) in the long time…
Averages over Ginibre's Ensemble of Random Real Matrices
Christopher D. Sinclair
We give a method for computing the ensemble average of multiplicative class functions over the Gaussian ensemble of real asymmetric matrices. These averages are expressed in terms…
Pair-wise decoherence in coupled spin qubit networks
Andrea Morello, P. C. E. Stamp, Igor S. Tupitsyn
Experiments involving phase coherent dynamics of networks of spins, such as echo experiments, will only work if decoherence can be suppressed. We show here, by analyzing the partic…