Optical time-domain quantum state tomography on a subcycle scale
- URL: http://arxiv.org/abs/2307.13090v1
- Date: Mon, 24 Jul 2023 19:24:34 GMT
- Title: Optical time-domain quantum state tomography on a subcycle scale
- Authors: Emanuel Hubenschmid, Thiago L. M. Guedes, Guido Burkard
- Abstract summary: We propose an approach to elevate broadband electro-optic sampling from a spectroscopic method to a full quantum tomography scheme.
We analyze sources of noise and show that in quantum electro-optic sampling with an ultrabroadband pump pulse one can expect to observe thermalization due to entanglement breaking.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Following recent progress in the experimental application of electro-optic
sampling to the detection of the quantum fluctuations of the
electromagnetic-field ground state and ultrabroadband squeezed states on a
subcycle scale, we propose an approach to elevate broadband electro-optic
sampling from a spectroscopic method to a full quantum tomography scheme, able
to reconstruct a broadband quantum state directly in the time-domain. By
combining two recently developed methods to theoretically describe quantum
electro-optic sampling, we analytically relate the photon-count probability
distribution of the electro-optic signal to a transformed phase-space
quasiprobability distribution of the sampled quantum state as a function of the
time delay between the sampled mid-infrared pulsed state and an ultrabroadband
near-infrared pump/probe pulse. We catalog and analyze sources of noise and
show that in quantum electro-optic sampling with an ultrabroadband pump pulse
one can expect to observe thermalization due to entanglement breaking.
Mitigation of the thermalization noise enables a tomographic reconstruction of
broadband quantum states while granting access to its dynamics on a subcycle
scale.
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