System and method related to photonic computing are provided. A photonic computing system may include an optical interference region and an input waveguide configured to couple an optical input signal to the optical interference region and to create an optical interference pattern in the optical interference region. The interference pattern has an optical power distribution. The photonic computing system may further include a readout unit that is arranged in an inner area of the optical interference region. The readout unit is configured to detect an optical readout signal of the optical power distribution at a readout position of the inner area of the optical interference region. A method is also provided for performing photonic computing.