[13p-B2-1~12] 3.10 Optical quantum physics and technologies

△ [13p-B2-9] Implementation of quantum state tomography for high-dimensional time-bin entanglements

〇Takuya Ikuta¹, Hiroki Takesue¹ (1.NTT BRL)

Keywords:quantum state tomography, high dimensional, time bin

Recently, high-dimensional quantum states have been intensively investigated. However, implementation of the quantum state tomography (QST) for a high-dimensional time-bin quantum entanglement has not been reported so far. Here, we realized a high-dimensional QST utilizing cascaded delay Mach-Zehnder interferometers, with which the number of the measurement setups scales linearly with the dimension d. We performed QST for the four-dimensional time-bin maximally entangled state eight times, and observed the average fidelities of 92.42±0.28 %.