| CPC H04B 10/70 (2013.01) [H04B 10/0795 (2013.01); H04L 7/0075 (2013.01)] | 20 Claims |
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1. A quantum teleportation system, comprising:
a transmitter generating first photons;
a source of pairs of entangled photons, each pair comprising a second photon entangled with a third photon;
a coupler electromagnetically coupled to the transmitter and the source of pairs of entangled photons;
a pair of detectors D1 and D2 electromagnetically coupled to the coupler;
a receiver including a detection system comprising a detector D3 detecting the third photons;
an optical fiber connecting the detector D3 and the source of pairs of entangled photons, wherein the detector D3 detects the third photons transmitted along the optical fiber;
a clock distribution system outputting one or more clock signals controlling timing of the first photons, the second photons, and the third photons such that:
the coupler interacts one of the first photons, carrying a first qubit, and one of the second photons, carrying a second qubit, to form an interference;
the pair of detectors D1 and D2 detect the interference used to obtain a Bell State Measurement of a quantum system comprising the first qubit and the second qubit;
the detector D3 detects one of the third photons entangled with the one of the second photons and outputs a signal in response thereto; and
the detection system reads a state of the first qubit using the signal and the Bell State Measurement;
a data acquisition system acquiring arrival times of the first photons and the second photons at the detectors D1 and D2, and the arrival times of the third photons at the detector D3, wherein the arrival times are tagged with reference to the clock signals; and
a computer benchmarking the quantum teleportation system in real time using the arrival times, wherein the benchmarking comprises using a model simulating at least one of teleportation fidelity of the first qubit teleported to the one of the third photons received at the detector D3, or a degree of indistinguishability between the one of the first photons and the one of the second photons, as a function of a mean number of the second photons, wherein the model is calibrated and validated using measurements of the teleportation fidelity and the degree of indistinguishability.
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