Publications related to Quantum critical scaling

Signatures of quantum criticality in the thermopower of Ba(Fe1-xCox)(2)As-2

László Forró, Richard Gaal, Stevan Arsenijevic

We demonstrate that the thermopower (S) can be used to probe the spin fluctuations (SFs) in proximity to the quantum critical point (QCP) in Fe-based superconductors. The sensitivity of S to the entropy of charge carriers allows us to observe an increase o ...

Amer Physical Soc2013

Two-Color Quantum and Classical Light Using Dot-in-Bulk Semiconductor Nanocrystals

Christophe Marcel Georges Galland

Using novel dot-in-bulk nanocrystals comprising a quantum-confined CdSe core overcoated with a thick, bulk-like CdS shell, we realize a new antibunching mechanism, which allows for simultaneous generation of quantum and classical light from the same nanost ...

2013

Critical Resistance at the Superconductor-Insulator Transition in Hole-Doped Cuprates

Davor Pavuna, Guy Joseph Günter Dubuis, Ivan Bozovic

Here, we show that in several p-type cuprates, the superconductor-to-insulator transition (SIT) occurs at the critical sheet resistance approximately equal to the quantum resistance of pairs, RQ=h/4

e^{2}

=6.5 kΩ. In a relatively broad range of temperature ...

Springer Verlag2013

Quantum-coherent coupling of a mechanical oscillator to an optical cavity mode

Tobias Kippenberg, Albert Schliesser, Stefan Alexander Weis

Optical laser fields have been widely used to achieve quantum control over the motional and internal degrees of freedom of atoms and ions(1,2), molecules and atomic gases. A route to controlling the quantum states of macroscopic mechanical oscillators in a ...

2012

Classical and Quantum Critical Phenomena in the Dipolar Antiferromagnet LiErF4

Neda Nikseresht Ghanepour

The collective behavior of systems consisting of interacting dipoles is a subject of considerable studies. The anisotropic nature of such interactions opens an arena to explore fundamental questions in correlated electron physics, ranging from quantum enta ...

EPFL2012

Heisenberg uncertainty principle as a probe of entanglement entropy: Application to superradiant quantum phase transitions

Pierre Marcel Nataf

Quantum phase transitions are often embodied by the critical behavior of purely quantum quantities such as entanglement or quantum fluctuations. In critical regions, we underline a general scaling relation between the entanglement entropy and one of the mo ...

Amer Physical Soc2012

Vison excitations in near-critical quantum dimer models

Dmitri Ivanov

We study vison excitations in a quantum dimer model interpolating between the Rokhsar-Kivelson models on the square and triangular lattices. In the square-lattice case, the model is known to be critical and characterized by U(1) topological quantum numbers ...

2011

Strain-induced interface instability in GaN/AlN multiple quantum wells

Nicolas Grandjean, Jean-François Carlin, Eric Feltin, Sylvain Nicolay

It is shown that in GaN/AlN multiple quantum wells (MQWs), strain is a critical parameter for achieving short-wavelength intersubband transitions (ISBTs). This is investigated by comparing GaN/AlN MQWs grown by metal organic vapor phase epitaxy on either A ...

2007

Scaling in ecosystems and the linkage of macroecological laws

Andrea Rinaldo, Amos Maritan

Scaling provides an elegant framework for understanding power-law behavior and deducing relationships between critical exponents. We demonstrate that scaling theory can be generalized to develop a framework for the analysis of diverse empirical macroecolog ...

2007

Large size dependence of exciton-longitudinal-optical-phonon coupling in nitride-based quantum wells and quantum boxes

Nicolas Grandjean

We present an experimental and theoretical study of the size dependence of the coupling between electron-hole pairs and longitudinal-optical phonons in Ga1-xInxN/GaN-based quantum wells and quantum boxes. We found that the Huang-Rhys factor S, which determ ...

2002

Quantum critical scaling

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Signatures of quantum criticality in the thermopower of Ba(Fe1-xCox)(2)As-2

Two-Color Quantum and Classical Light Using Dot-in-Bulk Semiconductor Nanocrystals

Critical Resistance at the Superconductor-Insulator Transition in Hole-Doped Cuprates

Quantum-coherent coupling of a mechanical oscillator to an optical cavity mode

Classical and Quantum Critical Phenomena in the Dipolar Antiferromagnet LiErF4

Heisenberg uncertainty principle as a probe of entanglement entropy: Application to superradiant quantum phase transitions

Vison excitations in near-critical quantum dimer models

Strain-induced interface instability in GaN/AlN multiple quantum wells

Scaling in ecosystems and the linkage of macroecological laws

Large size dependence of exciton-longitudinal-optical-phonon coupling in nitride-based quantum wells and quantum boxes

Critical Resistance at the Superconductor-Insulator Transition in Hole-Doped Cuprates

Large size dependence of exciton-longitudinal-optical-phonon coupling in nitride-based quantum wells and quantum boxes

Quantum-coherent coupling of a mechanical oscillator to an optical cavity mode

Classical and Quantum Critical Phenomena in the Dipolar Antiferromagnet LiErF4

Signatures of quantum criticality in the thermopower of Ba(Fe1-xCox)(2)As-2

Vison excitations in near-critical quantum dimer models

Scaling in ecosystems and the linkage of macroecological laws

Two-Color Quantum and Classical Light Using Dot-in-Bulk Semiconductor Nanocrystals

Heisenberg uncertainty principle as a probe of entanglement entropy: Application to superradiant quantum phase transitions

Strain-induced interface instability in GaN/AlN multiple quantum wells