Time-resolved spectroscopy with entangled photons
arXiv:1611.02415 · doi:10.1038/s41598-017-11694-z
Abstract
Interaction of light with media often occurs with a femtosecond response time. Its measurement by conventional techniques requires the use of femtosecond lasers and sophisticated time-gated optical detection1-3. Here we demonstrate that by exploiting quantum interference of entangled photons it is possible to measure the phase relaxation time of a media on the femtosecond time scale (down to 100 fs) using accessible continuous wave laser and single-photon counting. We insert the sample in the Hong-Ou-Mandel interferometer4 and infer the phase relaxation time from the modification of the two-photon interference pattern. In addition to its simplicity and ease of use, the technique does not require compensation of group velocity dispersion5-8 and does not induce photo-damage of the samples. This technique will be useful for characterization of ultrafast phase relaxation processes in material science, chemistry, and biology.
Submitted for publication
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- Pathway selectivity in time-resolved spectroscopy using two-photon coincidence counting with quantum entangled photons
- Hectometer Revivals of Quantum Interference
- Probing exciton dynamics with spectral selectivity through the use of quantum entangled photons
- Spectral considerations of Entangled two-photon absorption effects in Hong-Ou-Mandel interference experiments
- Measurement principles for quantum spectroscopy of molecular materials with entangled photons
- Performing quantum entangled biphoton spectroscopy using classical light pulses
- Probing Ultra-Fast Dephasing via Entangled Photon Pairs
- Ultrafast dynamics of quantum matter driven by time-energy entangled photons
- Scattering theory of frequency-entangled biphoton states facilitated by cavity polaritons