Essays about: "quantum point contact"

Showing result 1 - 5 of 11 essays containing the words quantum point contact.

  1. 1. Reversing the flow of heat in system of initially correlated qubits

    University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Author : Giovanni Francesco Diotallevi; Peter Samuelsson; Faraj Bakhshinezhad; [2021]
    Keywords : Qubits; Cooling; Heat Flow; Physics and Astronomy;

    Abstract : The Second Law of Thermodynamics is considered to be one of the most fundamental and important laws of Physics. Both Clausius and Kelvin reformulated the Second Law as statements concerning the behaviour of two communicating systems, set to interact at different temperatures. READ MORE

  2. 2. Real-time stability and dynamics of vortices in quasi-two-dimensional self-bound two-component Bose-Einstein condensate

    University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Author : Philipp Stürmer; [2019]
    Keywords : Bose-Einstein condensate; bosons; self-bound; cold atom gases; vortex; Physics and Astronomy;

    Abstract : This thesis presents a numerical study of the beyond mean field extended Gross-Pitaevskii equation for a two-component self-bound Bose-Einstein condensate, supplemented by analytical work. We extend the quasi-two-dimensional system's mean field particle-particle contact interaction by quantum fluctuations (LHY-correction). READ MORE

  3. 3. Advanced rear contact design for CIGS solar cells

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Jorge Alexandre De Abreu Mafalda; [2019]
    Keywords : CIGS; HfO2; surface passivation; alkali treatment; point contact openings; SCAPS;

    Abstract : The current trend concerning the thinning of solar cell devices is mainly motivated by economic aspects, such as the cost of the used rare-earth elements, and by the requirements of emergent technologies. The introduction of ultra-thin absorber layers results in a reduction of used materials and thus contributes to a more cost-effective and time-efficient production process. READ MORE

  4. 4. Fabrication of Tunneling Field Effect Transistors (TFETs) and the study of graphene

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Carlos Nunez Lobato; [2018]
    Keywords : graphene; semiconductor; exfoliation; boron nitride; Physics and Astronomy;

    Abstract : After the discovery of graphene in 2004, a single layer of graphite, the assembly of 2D materials became a promising research area in solid state Physics. This thesis explores fabrication of 2D-heterostructures that aim to probe into graphene’s electronic structure with the Tunneling Field Effect Transistor (TFET). READ MORE

  5. 5. Characterization of single InP Nanowire-based Avalanche Photodetectors

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Author : Virginia Boix De La Cruz; [2016]
    Keywords : Photodetectors; Nanotechnology; Nanowires; IndiumPhosphide; Semiconductors; Physics and Astronomy;

    Abstract : Nanoscience is an emerging field of technology where the bottom-up fabrication techniques are utilized instead of the traditional top-down approaches for enhancing the performance of di erent optoelectronic devices. One such material is a semicon- ductor nanowire (NW) which holds immense potential in nanophotonic applications, such as solar cells, LEDs, lasers, sensors and photodetectors. READ MORE