Optical simulator of the quantum Fourier transform
Yunseong Nam, R. Blümel · Europhysics Letters (EPL) · 2016
Experimental realizations of the quantum Fourier transform (QFT) are currently limited to n ≤ 3 qubits, which limits experimental tests of theoretical predictions of QFT performance under various noise conditions and their scaling in n . As a possible strategy to overcome this limitation, we show that an exact one-to-one correspondence exists between the QFT and a specially designed optical grating with a curved screen. This device allows the experimental simulation of the QFT, including defects, up to qubit numbers around n = 20, not currently accessible to direct quantum experimentation. The experimental realizability of the device is discussed.