Scientists have been researching Heusler compounds, which are an important material class for the use in spintronic applications. Over the past few years, new application areas have emerged in the field of renewable energy, such as solar energy and thermoelectrics. And now Heusler compounds are also being considered for future technologies such as quantum computers.

Quantum many-body systems can show an elusive form of order known as topological order. Theoretical work now unifies several microscopic models whereby topological phases have been found, and predicts quantum phase transitions that are driven by quantum fluctuations of the topology.

Scientists have been researching Heusler compounds, which are an important material class for the use in spintronic applications. Over the past few years, new application areas have emerged in the field of renewable energy, such as solar energy and thermoelectrics. And now Heusler compounds are also being considered for future technologies such as quantum computers.

Scientists have been researching Heusler compounds, which are an important material class for the use in spintronic applications. Over the past few years, new application areas have emerged in the field of renewable energy, such as solar energy and thermoelectrics. And now Heusler compounds are also being considered for future technologies such as quantum computers.

Marta Araujo, Benjamin Lasorne, Alexandre L. Magalhaes, Graham A. Worth, Michael J. Bearpark et al. The mechanisms of radiationless decay involved in the photodissociation of formaldehyde into H and CO have been investigated using complete active space self-consistent field (CASSCF) calculations and direct dynamics variational multiconfiguration Gaussian (DD-vMCG) quantum dynamics in the S, T, and ... [J. Chem. Phys. 131, 144301 (2009)] published Thu Oct 8, 2009.

The effect of loss on quantum states is one of the major hurdles in quantum communications. A quantum error-correcting code that overcomes erasure due to photon loss is experimentally demonstrated. The scheme uses linear optics and protects a four-mode entangled mesoscopic state of light.

T. V. Torchynska and A. Stintz The photoluminescence (PL), its temperature and power dependences, as well as PL inhomogeneity and x ray diffraction (XRD) has been studied in the symmetric InGaAs/GaAs quantum wells with embedded InAs quantum dots (QDs) (dot-in-a-well, DWELL) with different QD densities, obtained by the variation i ... [J. Appl. Phys. 108, 024316 (2010)] published Fri Jul 30, 2010.

Oded Godsi, Michael A. Collins, and Uri Peskin A quantum sampling algorithm for the interpolation of diabatic potential energy matrices by the Grow method is introduced. The new procedure benefits from penetration of the wave packet into classically forbidden regions, and the accurate quantum mechanical description of nonadiabatic transitions. T ... [J. Chem. Phys. 132, 124106 (2010)] published Thu Mar 25, 2010.

Researchers have succeeded in getting hold of the environment of a quantum particle. This allows them to exercise greater control over a single electron, and brings the team of researchers a step closer still to the super-fast quantum computer.

Tetsuya Asano, Zhaoqiang Fang, and Anupam Madhukar Currently lattice mismatch strain-driven three-dimensional coherent island based quantum dots, dubbed self-assembled quantum dots (SAQDs), constitute the most developed class of quantum dots with successful applications to lasers and considerable potential for infrared detectors in the 112 [mu]m re ... [J. Appl. Phys. 107, 073111 (2010)] published Mon Apr 12, 2010.

A 48-core prototype processor is part of a move from supercomputer-on-a-chip to data-center-on-a-chip

Author(s): Marlan O. ScullyThe fundamental limit to photovoltaic efficiency is widely thought to be radiative recombination which balances radiative absorption. We here show that it is possible to break detailed balance via quantum coherence, as in the case of lasing without inversion and the photo-Carnot quantum heat engine....[Phys. Rev. Lett. 104, 207701] Published Fri May 21, 2010

Renato A. Cruz, Viviane Pilla, and Tomaz Catunda A recently developed thermal lens spectrometry configuration has been used to study CdSe/ZnS core-shell quantum dots (QDs) suspended in toluene and tetrahydrofuran (THF) solvents. The special features of this configuration make it very attractive to measure fluorescence quantum yield (eta) excitatio ... [J. Appl. Phys. 107, 083504 (2010)] published Wed Apr 21, 2010.

Scientists have figured out a key step toward the design of quantum information networks. A quantum network – in which memory devices that store quantum states are interconnected with quantum information processing devices – is a prototype for designing a quantum internet.

Scientists have figured out a key step toward the design of quantum information networks. A quantum network – in which memory devices that store quantum states are interconnected with quantum information processing devices – is a prototype for designing a quantum internet.

The spin state of two electrons in a double well is a promising qubit. Now, such qubits can be arbitrarily rotated around two different axes by applying a magnetic field of different magnitude to each electron. This can be done in nanoseconds, before the stored information is lost.

Operating a superconducting single-electron transistor near a double Cooper-pair resonance allows it to achieve a charge-detection sensitivity of just 3.6 times the ultimate quantum limit.

Operating a superconducting single-electron transistor near a double Cooper-pair resonance allows it to achieve a charge-detection sensitivity of just 3.6 times the ultimate quantum limit.

An astrophysics experiment in America has demonstrated how fundamental research in one subject area can have a profound effect on work in another as the instruments used for the Laser Interferometer Gravitational-Wave Observatory (LIGO) pave the way for quantum experiments on a macroscopic scale.

The use of a specially designed cavity to enhance the intensity of femtosecond ultraviolet pulses dramatically increases the rate at which non-classical states of light can be produced.

A new idea for 'freezing-out' unwanted losses in an atomic memory could make it possible to store light pulses on-chip for several minutes, increasing the capability of optical quantum computing.

Using atoms at temperatures colder than deep space, physicists have delivered overwhelming proof for a 1970 theory that was largely scoffed at when it first appeared. They offers experimental proof of a universal quantum mechanism that causes trios of particles to appear and reappear at higher energy levels in an infinite progression. The triplets, or trimers, form in special cases where pairs cannot.

Osamu Kojima, Hiroaki Nakatani, Takashi Kita, Osamu Wada, and Kouichi Akahane We have investigated the effects of temperature on the photoluminescence (PL) characteristics of excitons in ordinary stacked quantum dots (QDs) and QD chains in which QDs are interconnected along the growth direction. While the temperature dependence of the PL intensity of both samples is similar, ... [J. Appl. Phys. 107, 073506 (2010)] published Wed Apr 7, 2010.

Using atoms at temperatures colder than deep space, physicists have delivered overwhelming proof for a 1970 theory that was largely scoffed at when it first appeared. They offers experimental proof of a universal quantum mechanism that causes trios of particles to appear and reappear at higher energy levels in an infinite progression. The triplets, or trimers, form in special cases where pairs cannot.

Conventionally, the states of a two-dimensional quantum ring in a high magnetic field have a well-defined spatial structure. But Coulomb repulsion between individual orbits causes oscillations in the size of this structure each time a magnetic flux-quantum enters or leaves the system. This effect has now been measured experimentally in semiconducting quantum rings.

On-demand single-photon sources with high efficiency are required to realize many of the applications of quantum optics. By exploiting photonic mode transformation in a tapered nanowire, researchers have created a source that has an unprecedented extraction efficiency over an extremely broad spectral range.

By creating diamond-based nanowire devices, scientists have taken another step towards making applications based on quantum science and technology possible. The new device offers a bright, stable source of single photons at room temperature, an essential element in making fast and secure computing with light practical.

By creating diamond-based nanowire devices, scientists have taken another step towards making applications based on quantum science and technology possible. The new device offers a bright, stable source of single photons at room temperature, an essential element in making fast and secure computing with light practical.