Tomography of time-bin quantum states using time-resolved detection

• URL: http://arxiv.org/abs/2003.11981v2
• Date: Tue, 24 Nov 2020 19:00:24 GMT
• Title: Tomography of time-bin quantum states using time-resolved detection
• Authors: Karolina Sedziak-Kacprowicz, Artur Czerwinski and Piotr Kolenderski
• Abstract summary: We present a method for measuring quantum states encoded in the temporal modes of photons. The basis for the multilevel quantum states is defined by the use of modes propagating in a dispersive medium. The POVM depends on the amount of dispersion and the characteristics of a detector.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present a method for measuring quantum states encoded in the temporal modes of photons. The basis for the multilevel quantum states is defined by the use of modes propagating in a dispersive medium, which is a fiber in this case. The propagation and time-resolved single photon detection allow us to define a positive-operator valued measure (POVM). The POVM depends on the amount of dispersion and the characteristics of a detector. This framework is numerically tested by performing quantum state tomography on a large number of states for a set of realistic experimental settings. Finally, the average fidelity between the expected and reconstructed states is computed for qubits, qutrits and entangled qubits.

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