An experiment conducted by scientists from the United States and Canada shows that the Arrhenius formula, which has been in use for 135 years, needs to be modified before it can be applied to the quantum field. The relevant paper was published in the latest issue of Physical Review X. The Arrhenius formula was established by Swedish scientist Svante August Arrhenius, who won the Nobel Prize in Chemistry in 1903, and revealed the relationship between the rate constant of chemical reactions and temperature. In the latest research, Rodrigo Cotinias and others from Yale University constructed a quantum bit using a small superconducting circuit. They use microwaves to oscillate the current in the circuit within two potential energy traps. Due to the quantum tunneling effect, interference within the system may cause qubits to unexpectedly transition from one potential well to another. According to the Arrhenius formula, increasing the energy difference between two potential energy wells should exponentially decrease the frequency of quantum tunneling between them, resulting in a smooth curve. However, the experimental results show a sawtooth line similar to a staircase. Researchers have found that the reason for this difference is due to the energy level constraints of quantum bits. In the macroscopic world, the Arrhenius formula assumes that quantum bits can have any energy level, but in quantum theory, they are only allowed to have a special set of discrete energy levels. Therefore, the Arrhenius formula must be modified before it can be applied to the quantum field. Researchers suggest that using the traditional Arrhenius formula in systems susceptible to quantum effects may result in significant errors. This unexpected discovery has helped researchers improve quantum bits by extending their residence time in a potential energy well by 10 times compared to before. This enhances the reliability of quantum bits, which is crucial for the development of quantum computers. (New Society)
Edit：Lubaikang Responsible editor：Chenze
Source：digitalpaper.stdaily.com
Special statement: if the pictures and texts reproduced or quoted on this site infringe your legitimate rights and interests, please contact this site, and this site will correct and delete them in time. For copyright issues and website cooperation, please contact through outlook new era email：lwxsd@liaowanghn.com
Sci-Tech
Recommended Reading Change it 
Home
