Prof Vlatko Vedral FInstP: Publications

No-hypersignaling principle

(2016)

Authors:

Michele Dall'Arno, Sarah Brandsen, Alessandro Tosini, Francesco Buscemi, Vlatko Vedral

Device-independent tests of quantum measurements

(2016)

Authors:

Michele Dall'Arno, Sarah Brandsen, Francesco Buscemi, Vlatko Vedral

Unbounded memory advantage in stochastic simulation using quantum mechanics

(2016)

Authors:

Andrew JP Garner, Qing Liu, Jayne Thompson, Vlatko Vedral, Mile Gu

Thinking big thoughts

Physics World IOP Publishing 29:8 (2016) 35-36

Quantum Quasi-Zeno Dynamics: Transitions mediated by frequent projective measurements near the Zeno regime

Phys. Rev. A APS 94:7 (2016) 012118

Authors:

TJ Elliott, V Vedral

Abstract:

Frequent observation of a quantum system leads to quantum Zeno physics, where the system evolution is constrained to states commensurate with the measurement outcome. We show that, more generally, the system can evolve between such states through higher-order virtual processes that pass through states outside the measurement subspace. We derive effective Hamiltonians to describe this evolution, and the dependence on the time between measurements. We demonstrate application of this phenomena to prototypical quantum many-body system examples, spin chains and atoms in optical lattices, where it facilitates correlated dynamical effects.

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