Strongly correlated states of trapped ultracold fermions in deformed Landau levels

Date:
2015-03-09
Author(s):

M. Burrello, M. Rizzi, M. Roncaglia and A. Trombettoni

Reference:

Phys. Rev. B 91, 115117

We analyze the strongly correlated regime of a two-component trapped ultracold fermionic gas in a synthetic non-Abelian U(2) gauge potential, that consists of both a magnetic field and a homogeneous spin-orbit coupling. This gauge potential deforms the Landau levels (LLs) with respect to the Abelian case and exchanges their ordering as a function of the spin-orbit coupling.

Commensurate and Incommensurate States of Topological Quantum Matter

Date:
2014-11-03
Author(s):

Ashley Milsted, Emilio Cobanera, Michele Burrello, Gerardo Ortiz

Reference:

Phys. Rev. B 90, 195101 (2014)

We prove numerically and by dualities the existence of modulated, commensurate and incommensurate states of topological quantum matter in simple systems of parafermions, motivated by recent proposals for the realization of such systems in mesoscopic arrays. In two space dimensions, we obtain the simplest representative of a topological universality class that we call Lifshitz.

Entanglement of nanoelectromechanical oscillators by Cooper-pair tunneling

Date:
2013-07-26 - 2014-10-23
Author(s):

Stefan Walter, Jan Carl Budich, Jens Eisert, and Björn Trauzettel

Reference:

Phys. Rev. B 88, 035441 (2013); DOI: http://dx.doi.org/10.1103/PhysRevB.88.035441

How cold can you get in space? Quantum Physics at cryogenic temperatures in space

Date:
2013-09-13
Author(s):

Gerald Hechenblaikner
Fabian Hufgard
Johannes Burkhardt
Nikolai Kiesel
Ulrich Johann
Markus Aspelmeyer
Rainer Kaltenbaek

Reference:

arXiv:1309.3234v2 [quant-ph]

Entanglement and tensor network states

Date:
2013-08-15
Author(s):

Jens Eisert

Reference:

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

Momentum polarization: an entanglement measure of topological spin and chiral central charge

Date:
2012-12-31
Author(s):

Hong-Hao Tu, Yi Zhang, Xiao-Liang Qi

Reference:

arXiv:1212.6951v1

Topologically ordered states are quantum states of matter with topological ground state degeneracy and quasi-particles carrying fractional quantum numbers and fractional statistics. The topological spin $\theta_a=2\pi h_a$ is an important property of a topological quasi-particle, which is the Berry phase obtained in the adiabatic self-rotation of the quasi-particle by $2\pi$.

Phonon-induced spin-spin interactions in diamond nanostructures: application to spin squeezing

Date:
2013-04-09
Author(s):

S. Bennett, N. Y. Yao, J. Otterbach, P. Zoller, P. Rabl, M. Lukin

Reference:

DOI: 10.1103/PhysRevLett.110.156402
PACS: 71.55.-i, 07.10.Cm, 42.50.Dv

We propose and analyze a novel mechanism for long-range spin-spin interactions in diamond nanostructures. The interactions between electronic spins, associated with nitrogen-vacancy centers in diamond, are mediated by their coupling via strain to the vibrational mode of a diamond mechanical nanoresonator.

Non-classical field state stabilization in a cavity by reservoir engineering

Date:
2010-11-23
Author(s):

A. Sarlette, J.M. Raimond and P. Rouchon

Reference:

We propose an engineered reservoir inducing the relaxation of a cavity field towards non-classical states. It is made up of two-level atoms crossing the cavity one at a time. Each atom-cavity interaction is first dispersive, then resonant, then dispersive again. The reservoir pointer states are those produced by a fictitious Kerr Hamiltonian acting on a coherent field. We thereby stabilize squeezed states and quantum superpositions of multiple coherent components in a cavity having a finite damping time.

Toward Quantum Superposition of Living Organisms

Date:
2010-03-11
Author(s):

Oriol Romero-Isart, Mathieu L. Juan, Romain Quidant, J. Ignacio Cirac

Reference:

New J. Phys. 12, 033015 (2010)

The authors propose a novel approach to prepare mesoscopic mechanical systems in superposition, or entangled states at room temperatures. A promising setup for the implementation of these ideas consists of levitated nanospheres coupled to high-finesse cavities.