Exciton Fine-Structure Splitting in Self- Assembled Lateral InAs/GaAs Quantum-Dot Molecular Structures
... induced piezoelectric field on the symmetry of the confinement potential of the excitons. These two effects compensate each other, and the resulting FSS thus depends on the degree of the compensation. In the case of the DQDs, the effect of the piezoelectric field substantially overcompensates the ef ...
... induced piezoelectric field on the symmetry of the confinement potential of the excitons. These two effects compensate each other, and the resulting FSS thus depends on the degree of the compensation. In the case of the DQDs, the effect of the piezoelectric field substantially overcompensates the ef ...
Quantum Computation with Molecular Nanomagnets
... mathematical description that accounts – at the same time – for the dynamics of the quantum system and for the calculation rules on which the algorithm relies. Experimentally, performing quantum computation implies to control the dynamics of the quantum system under the action of an external stimulu ...
... mathematical description that accounts – at the same time – for the dynamics of the quantum system and for the calculation rules on which the algorithm relies. Experimentally, performing quantum computation implies to control the dynamics of the quantum system under the action of an external stimulu ...
Spin squeezing and quantum correlations
... whether squeezing exists for a non-oriented state we now start with an arbitrary state jψ i and first determine its mean spin direction ẑ 0 . The most general spin-1 state that possesses a non-zero mean spin value h~Si, can be written in the form ...
... whether squeezing exists for a non-oriented state we now start with an arbitrary state jψ i and first determine its mean spin direction ẑ 0 . The most general spin-1 state that possesses a non-zero mean spin value h~Si, can be written in the form ...
Reply to criticism of the ‘Orch OR qubit’ – ‘Orchestrated... reduction’ is scientifically justified
... As remarked upon above, to ask for too much precision in our suggested mechanisms is, at this stage, an unreasonable request. Nevertheless, we have clearly specified our proposal for an Orch OR qubit, as the Orch OR helical dipole pathway that Reimers et al. appear to ignore. Unlike previous proposa ...
... As remarked upon above, to ask for too much precision in our suggested mechanisms is, at this stage, an unreasonable request. Nevertheless, we have clearly specified our proposal for an Orch OR qubit, as the Orch OR helical dipole pathway that Reimers et al. appear to ignore. Unlike previous proposa ...
72 063623 (2005) .
... dependence of decaying rate on the location of the initial coherent states. The Gaussian decay may be followed by a power-law decay 1 / t with 艌 1 for the large time scale. However, after averaging over the whole phase space, we find that the fidelity decay can be well fitted by an inverse power ...
... dependence of decaying rate on the location of the initial coherent states. The Gaussian decay may be followed by a power-law decay 1 / t with 艌 1 for the large time scale. However, after averaging over the whole phase space, we find that the fidelity decay can be well fitted by an inverse power ...
Quantum Annealing with Markov Chain Monte Carlo Simulations
... and its implementations, and the second part proposes statistical methodologies to analyze data generated from annealing experiments. Specifically, we introduce quantum annealing to solve optimization problems and describe D-Wave computing devices to implement quantum annealing. We illustrate implem ...
... and its implementations, and the second part proposes statistical methodologies to analyze data generated from annealing experiments. Specifically, we introduce quantum annealing to solve optimization problems and describe D-Wave computing devices to implement quantum annealing. We illustrate implem ...
Precisely Timing Dissipative Quantum Information
... preparing’’ a state, and it is far from clear how to incorporate error correction into any such scheme. In this work, we open up new perspectives for dissipative quantum information processing by introducing and analyzing a number of dissipative ‘‘gadgets.’’ They can be combined to act as time trigg ...
... preparing’’ a state, and it is far from clear how to incorporate error correction into any such scheme. In this work, we open up new perspectives for dissipative quantum information processing by introducing and analyzing a number of dissipative ‘‘gadgets.’’ They can be combined to act as time trigg ...
Particle in a box
In quantum mechanics, the particle in a box model (also known as the infinite potential well or the infinite square well) describes a particle free to move in a small space surrounded by impenetrable barriers. The model is mainly used as a hypothetical example to illustrate the differences between classical and quantum systems. In classical systems, for example a ball trapped inside a large box, the particle can move at any speed within the box and it is no more likely to be found at one position than another. However, when the well becomes very narrow (on the scale of a few nanometers), quantum effects become important. The particle may only occupy certain positive energy levels. Likewise, it can never have zero energy, meaning that the particle can never ""sit still"". Additionally, it is more likely to be found at certain positions than at others, depending on its energy level. The particle may never be detected at certain positions, known as spatial nodes.The particle in a box model provides one of the very few problems in quantum mechanics which can be solved analytically, without approximations. This means that the observable properties of the particle (such as its energy and position) are related to the mass of the particle and the width of the well by simple mathematical expressions. Due to its simplicity, the model allows insight into quantum effects without the need for complicated mathematics. It is one of the first quantum mechanics problems taught in undergraduate physics courses, and it is commonly used as an approximation for more complicated quantum systems.