Researchers from QuSoft at the University of Amsterdam and Cornell University have derived a formula that predicts the effects of environmental noise on quantum computing. Quantum computers use qubits, which can be in a superposition of 0 and 1 simultaneously, allowing them to perform certain calculations faster than classical computers. However, environmental noise can disrupt the success of quantum computation. The researchers’ formula allows them to quantify the effects of noise on quantum computing and develop methods to overcome them by incorporating redundancy in the message to ensure that the quantum information can still be retrieved at the receiving end.

The researchers derived a formula that predicts the effects of environmental noise on quantum computing by analyzing a model called the bosonic dephasing channel. This model represents the dephasing acting on a single light mode at a definite wavelength and polarization. They then provided a full analytical solution to the problem of calculating the quantum capacity of the bosonic dephasing channel for all possible forms of dephasing noise. This formula enables scientists to quantify the effects of noise on quantum computing and develop methods to overcome them.

The derivation of this formula that predicts the effects of environmental noise on quantum computing is a significant advancement in the field. It allows scientists to quantify the effects of noise on quantum computing and develop methods to overcome these effects. Researchers can now protect quantum information from dephasing noise by incorporating redundancy in the message to ensure that the quantum information can still be retrieved at the receiving end. This is crucial for designing and building quantum computers capable of working in our imperfect world and brings us a step closer to realizing the potential of quantum computing for solving complex problems faster than classical computers.

The formula that predicts the effects of environmental noise on quantum computing can lead to improved error correction techniques. With the ability to quantify the effects of noise, researchers can develop more robust quantum computers. This can help protect quantum information from dephasing noise, significantly improving quantum computing systems’ reliability.

In addition, the formula can help researchers gain a better understanding of the limitations of current quantum computing systems. By quantifying the effects of noise on quantum computing, researchers can identify the factors that limit the performance of quantum computers. This understanding can help guide the development of new quantum computing technologies and architectures that are better equipped to overcome these limitations.

Furthermore, the formula can help researchers develop more efficient quantum algorithms. By quantifying the effects of noise on quantum computing, researchers can develop more accurate and efficient quantum algorithms that are less susceptible to noise. This can lead to faster and more accurate quantum computations, which can be beneficial for solving complex problems that are beyond the capabilities of classical computers.

Reference:

How to overcome noise in quantum computations [Press release]. EurekAlert!. Retrieved  from:

https://www.eurekalert.org/news-releases/985301