Time-bin Encoding

While the Time-bin encoding technique is very robust against Decoherence , it does not allow easy interaction between the different qubits. As such, it is much more useful in Quantum Communication (such as Quantum Teleportation and Quantum Key Distribution ) than in Quantum Computation . HOW TO BUILD A TIME-BIN ENCODED QUBIT Time-bin encoding is done by having a single-photon go through a Mach-Zender Interferometer (MZ), shown in black here. The photon coming from the left is guided through one of two paths (shown in blue and red); the guiding can be made by Optical Fiber or simply in free space using mirrors and Polarising Cubes . One of the two paths is longer than the other. The difference in path length must be longer than the Coherence Length of the photon to make sure the path taken can be unambiguously distinguished. The interferometer has to keep a stable phase, which means that the path length difference must vary by much less than the wavelength of light during the experiment. This usually requires active temperature stabilization.
	: <math> \psi Angle	\alpha 0 angle + \beta 1 angle,\,</math>

	CATEGORIES ABOUT TIME-BIN ENCODING

	quantum information science

Information About