在量子电路中的热浴.
Jukka P Pekola1, Bayan Karimi1,2
1Pico Group, QTF Centre of Excellence, Department of Applied Physics, Aalto University, P.O. Box 15100, FI-00076 Aalto, Finland.
Entropy (Basel, Switzerland)
|May 24, 2024
概括
研究人员在固态量子系统中探索了热浴. 他们发现,具有不同能量分布的量子位集合,或超导共振器,比传输线更好地模仿理想的热浴.
科学领域:
- 量子物理学的量子物理学
- 固态系统是固态系统.
- 量子信息科学是一种量子信息科学.
背景情况:
- 对热浴的准确建模对于理解和控制量子系统至关重要.
- 像约瑟夫森连接阵列或传输线路这样的传统储可能无法完美地代表卡尔代拉-莱格特散热环境.
- 量子系统环境的特性显著影响其动态性和连贯性.
研究的目的:
- 研究在固态量子系统中实现适当的热浴的要求.
- 评估可以作为有效热浴的替代量子系统.
- 确定一组双层系统或波器可以作为热浴的条件.
主要方法:
- 理论分析有限的单维约瑟夫森连接阵列和传输线作为量子储库.
- 使用量子二级系统 (qubits) 的集合建模热浴.
- 调查能源分布在两层系统浴室中的作用.
- 考虑采集波器,如超导共振器,作为替代的浴室.
主要成果:
- 有限的约瑟夫森连接阵列和具有不消失的频率间隔的传输线不完全符合卡尔代拉-莱格特散射环境的资格.
- 在一个两层系统的集合中,需要密集和广泛的能量分布,以实现真正热浴的特征,即长的庞卡雷复发时间.
- 超导体共振器的集合为创建热浴提供了一个可行的替代方案.
结论:
- 在固态量子系统中实现适当的热浴需要仔细考虑水库的特性.
- 基于基比特的浴需要特定的能量分布特征才能有效地运行.
- 超导共振器为构建量子热浴提供了一个有前途的平台.
相关概念视频
02:45The Quantum-Mechanical Model of an Atom
42.2K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
42.2K
02:44Heating and Cooling Curves
22.8K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
22.8K
03:02Constant Pressure Calorimetry
85.1K
Calorimetry is a technique used to measure the amount of heat involved in a chemical or physical process or to measure the heat transferred to or from a substance. The heat is exchanged with a calibrated and insulated device called the calorimeter. Calorimetry experiments are based on the assumption that there is no heat exchange between the insulated calorimeter and the external environment. The well-insulated calorimeters prevent the transfer of heat between the calorimeter and its external...
85.1K
02:32The de Broglie Wavelength
25.8K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
25.8K
02:46Quantifying Heat
54.4K
Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a...
54.4K
01:25Deactivation Processes: Jablonski Diagram
639
Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...
639