Quantum finance is a new way of looking at the financial markets. Instead of looking at the markets as something that is predictable, quantum finance looks at them as something that is unpredictable and can be affected by small changes. This means that you can use quantum principles, like quantum mechanical principles, to try and figure out how the markets might react to certain events. For example, you can use quantum principles to try and predict when a stock price might go up or down. This can help guide trading decisions and give investors a better understanding of how their money is moving in the markets.