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TU Delft researchers entangle quantum bits by measurement and feedback control

Wed, 2013-11-20 20:40 - Jonathan Finley
Summary: 

Two superconducting qubits entangled!

For more information, navigate to http://dicarlolab.tudelft.nl/entangling-quantum-circuits-by-measurement/ 

Call for proposals to organize the bi-annual QIPC conference

Tue, 2013-11-12 17:20 - admin
Date: 
2013-11-12 - 2014-02-02
Place: 
Europe

In accordance with the EU ICT Programme, QUTE-EUROPE is currently inviting outstanding proposals for the bi-annual QIPC conference to be held in 2015.

QUTE-EUROPE (Quantum Technologies for Europe) is an FP7 Coordination and Support Action project that aims at coordinating or supporting research activities and policies at the European level towards a unified, open, and strong community in QIPC (Quantum Information Processing and Communication) research in Europe.

Locality of temperature

Mon, 2013-11-04 18:15 - Earl Campbell
Date: 
2014-07-31
Author(s): 

M. Kliesch, C. Gogolin, M. J. Kastoryano, A. Riera, and J. Eisert

Reference: 

arXiv:1309.0816 [quant - ph]

Phys. Rev. X 4, 031019 (2014) DOI: http://dx.doi.org/10.1103/PhysRevX.4.031019

URL: 

http://arxiv.org/abs/1309.0816

Breakdown of quasi-locality in long-range quantum lattice models

Mon, 2013-11-04 18:11 - Earl Campbell
Date: 
2013-09-09
Author(s): 

J. Eisert, M. van den Worm, S. R. Manmana, and M. Kastner

Reference: 

Phys. Rev. Lett. 111, 260401 (2013) http://dx.doi.org/10.1103/PhysRevLett.111.260401
arXiv:1309.2308 [quant - ph]

URL: 

http://arxiv.org/abs/1309.2308

We study the nonequilibrium dynamics of correlations in quantum lattice models in the presence of long-range interactions decaying asymptotically as a power law. For exponents larger than the lattice dimensionality, a Lieb-Robinson-type bound effectively restricts the spreading of correlations to a causal region, but allows supersonic propagation. We show that this decay is not only sufficient but also necessary.

Correlated thermal machines in the micro-world

Mon, 2013-11-04 18:03 - Earl Campbell
Date: 
2013-10-30
Author(s): 

R. Gallego, A. Riera, and J. Eisert

Reference: 

arXiv:1310.8349 [quant - ph]

URL: 

http://arxiv.org/abs/1310.8349

Entanglement and tensor network states

Mon, 2013-11-04 17:57 - Earl Campbell
Date: 
2013-08-15
Author(s): 

Jens Eisert

Reference: 

Modeling and Simulation 3, 520 (2013)
arXiv:1308.3318 [quant-ph]

URL: 

http://arxiv.org/abs/1308.3318

Edge theories in Projected Entangled Pair State models

Wed, 2013-10-23 11:10 - Mari-Carmen Banuls
Date: 
2013-09-18
Author(s): 

S. Yang, L. Lehman, D. Poilblanc, K. Van Acoleyen, F. Verstraete, J.I. Cirac, N. Schuch

Reference: 

Phys. Rev. Lett. 112, 036402 (2014)

URL: 

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.036402

We study the edge physics of gapped quantum systems in the framework of Projected Entangled Pair State (PEPS) models. We show that the effective low-energy model for any region acts on the entanglement degrees of freedom at the boundary, corresponding to physical excitations located at the edge. This allows us to determine the edge Hamiltonian in the vicinity of PEPS models, and we demonstrate that by choosing the appropriate bulk perturbation, the edge Hamiltonian can exhibit a rich phase diagram and phase transitions.

Dissipative production of a maximally entangled steady state

Thu, 2013-10-17 04:19 - Sumanta Das
Date: 
2013-07-16 - 2013-10-17
Author(s): 

Y. Lin, J. P. Gaebler, F. Reiter, T. R. Tan, R. Bowler, A. S. Sørensen, D. Leibfried, D. J. Wineland

Reference: 

Nature 504, 415–418 (19 December 2013) doi:10.1038/nature12801

URL: 

http://arxiv.org/abs/1307.4443

Entangled states are a key resource in fundamental quantum physics, quantum cryp-tography, and quantum computation [1].To date, controlled unitary interactions applied to a quantum system, so-called "quantum gates", have been the most widely used method to deterministically create entanglement [2].

QIPC conference, Florence

Thu, 2013-07-11 10:40 - Lukas Theussl
Summary: 

The QUIE2T - sponsored international QIPC conference 2013 was successfully staged in Florence last week.

In addition to the scientific program, the 2013 QIPC conference comprised sessions that were of interest beyond the scientific community, and that continued the tradition of similar activities at earlier QIPC conferences. Adjusted to the vocation of QUIE2T, these activities included an ‚Industry Session‘, an ‚EU funding session‘ and the ceremony for the ‚QIPC Young Investigator Award‘.

QUANTUM ENVOY COMES TO OXFORD

Mon, 2013-05-27 16:49 - Kamna Pruvost
Date: 
2013-06-06
Place: 
Oxford, UK
Website: 

http://www2.physics.ox.ac.uk/events/2013/06/06/quantum-envoy-comes-to-ox...

Come along to the Oxford University Museum of Natural History, Parks Road, from 5:30pm on Thursday 6th June for an evening of 3 fascinating talks about quantum mechanics – the strangest theory ever to be correct!

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