Ultrafast Measurement of Energy-Time Entanglement with an Optical Kerr Shutter

• URL: http://arxiv.org/abs/2305.14498v1
• Date: Tue, 23 May 2023 20:02:20 GMT
• Title: Ultrafast Measurement of Energy-Time Entanglement with an Optical Kerr Shutter
• Authors: Andrew R. Cameron, Kate L. Fenwick, Sandra W. L. Cheng, Sacha Schwarz, Benjamin MacLellan, Philip J. Bustard, Duncan England, Benjamin Sussman, Kevin J. Resch
• Abstract summary: We implement optical Kerr shutters in single mode fibers to map out the sub-picosecond correlations of energy-time entangled photon pairs. Measurements are used to verify entanglement by means of the violation of a time-bandwidth inequality.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recent experimental progress in quantum optics has enabled measurement of single photons on ultrafast timescales, beyond the resolution limit of single photon detectors. The energy-time degree of freedom has emerged as a promising avenue for quantum technologies, as entanglement between the frequency and temporal properties of two photons can be fully explored and utilized. Here, we implement optical Kerr shutters in single mode fibers to map out the sub-picosecond correlations of energy-time entangled photon pairs. These measurements, in addition to joint spectral measurements of the photon pair state, are used to verify entanglement by means of the violation of a time-bandwidth inequality.

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