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Related Concept Videos

Superconductor01:24

Superconductor

2.0K
A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
2.0K
Semiconductors01:22

Semiconductors

1.8K
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
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Types Of Superconductors01:28

Types Of Superconductors

1.8K
A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
1.8K
Types of Semiconductors01:20

Types of Semiconductors

1.7K
Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
1.7K
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

800
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
800
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

1.3K
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Semiconductor-inspired design principles for superconducting quantum computing.

Yun-Pil Shim1,2, Charles Tahan1

  • 1Laboratory for Physical Sciences, College Park, Maryland 20740, USA.

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This summary is machine-generated.

This study proposes an encoded qubit approach for superconducting circuits, drawing inspiration from spin qubits. This design enables microwave-free control and promises higher fidelity quantum computing.

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Area of Science:

  • Quantum computing
  • Solid-state physics
  • Superconducting circuits

Background:

  • Superconducting circuits offer design flexibility for quantum information processing.
  • Semiconductor spin qubits present advantageous natural properties for quantum computing.
  • Advancing superconducting qubit science requires exploring new design principles.

Purpose of the Study:

  • To explore the application of spin-based system design principles to superconducting qubits.
  • To propose an encoded qubit approach for tunable Josephson junction qubits.
  • To identify pathways for enhanced superconducting qubit capabilities.

Main Methods:

  • Developing an encoded qubit concept for superconducting circuits.
  • Utilizing state-of-the-art tunable Josephson junction qubits.
  • Investigating design principles derived from spin-based quantum systems.

Main Results:

  • The proposed encoded qubit approach shows promise for superconducting circuits.
  • This design enables microwave-free control of qubits.
  • The approach offers potential for higher fidelity and higher temperature operation.

Conclusions:

  • Integrating spin qubit design principles can advance superconducting qubit technology.
  • The proposed method provides a viable route to enhanced qubit performance.
  • This work paves the way for novel superconducting qubit designs and capabilities.