Photon-added coherent states using the continuous-mode formalism
- URL: http://arxiv.org/abs/2010.11846v1
- Date: Thu, 22 Oct 2020 16:32:18 GMT
- Title: Photon-added coherent states using the continuous-mode formalism
- Authors: J. T. Francis and M. S. Tame
- Abstract summary: The squeezed nature of photon-added coherent (PAC) states potentially offers an advantage in quantum sensing applications.
We study the properties of a single-photon and coherent state wavepacket superimposed with variable temporal and spectral overlap.
We show that, even without perfect overlap, the state exhibits a sub-Poissonian number distribution, second-order quantum correlations and quadrature squeezing for a weak coherent state.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The addition of a photon into the same mode as a coherent state produces a
nonclassical state that has interesting features, including quadrature
squeezing and a sub-Poissonian photon-number distribution. The squeezed nature
of photon-added coherent (PAC) states potentially offers an advantage in
quantum sensing applications. Previous theoretical works have employed a
single-mode treatment of PAC states. Here, we use a continuous-mode approach
that allows us to model PAC state pulses. We study the properties of a
single-photon and coherent state wavepacket superimposed with variable temporal
and spectral overlap. We show that, even without perfect overlap, the state
exhibits a sub-Poissonian number distribution, second-order quantum
correlations and quadrature squeezing for a weak coherent state. We also
include propagation loss in waveguides and study how the fidelity and other
properties of PAC state pulses are affected.
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