Temporal Quantum-State Tomography of Narrowband Biphotons

Abstract

We describe and demonstrate a quantum state tomography for measuring the complex temporal waveform of narrowband biphotons. Through six sets of two-photon interference measurements projected in different polarization subspaces, we can construct the time-frequency entangled two-photon joint amplitude and phase functions in continuous-variable time domain. For the first time, we apply this technique to experimentally determine the temporal quantum states of narrowband biphotons generated from spontaneous four-wave mixing in cold atoms, and fully confirm the theoretical predictions.

5 pages, 5 figures

References in corpus (5)

• Electro-Optic Modulation of Single Photons
• Quantum homodyne tomography of a two-photon Fock state
• Full characterization of Gaussian bipartite entangled states by a single homodyne detector
• Optimal Storage and Retrieval of Single-Photon Waveforms
• Interferometric measurement of the biphoton wave function

Cited by in corpus (6)

• Extended Wiener-Khinchin theorem for quantum spectral analysis
• Narrowband Biphotons with Polarization-Frequency Coupled Hyperentanglement
• Robust interferometric sensing using two-photon interference
• Postselection-Free Cavity-Enhanced Narrow-Band Orbital Angular Momentum Entangled Photon Source
• Narrowband Biphotons: Generation, Manipulation, and Applications
• Hong-Ou-Mandel interferometry with cavity QED-based single-photon sources: A Quantum Jump Analysis