Toolbox for non-classical state calculations
arXiv:2107.11129 · doi:10.1088/2040-8986/ac32ee
Abstract
Computational challenges associated with the use of Wigner functions to identify non-classical properties of states are addressed with the aid of generating functions. It allows the computation of the Wigner functions of photon-subtracted states for an arbitrary number of subtracted photons. Both the formal definition of photon-subtracted states in terms of ladder operators and the experimental implementation with heralded photon detections are analyzed. These techniques are demonstrated by considering photon subtraction from squeezed thermal states as well as squeezed Fock states. Generating functions are also used for the photon statistics of these states. These techniques reveal various aspects of the parameter dependences of these states.
arXiv comment18 pages, 6 figures, accepted version
References in corpus (17)
- Quantum information with continuous variables
- Quantum Resource Theories
- Continuous variable quantum information: Gaussian states and beyond
- On the impossibility of distilling Gaussian states with Gaussian operations
- Positive Wigner functions render classical simulation of quantum computation efficient
- Schroedinger cat-like states by conditional measurements on a beam-splitter
- Efficient Classical Simulation of Continuous Variable Quantum Information Processes
- Nonclassicality and decoherence of photon-subtracted squeezed states
- Quantum Mechanics in Phase Space
- Universal continuous-variable quantum computation: Requirement of optical nonlinearity for photon counting
- Sufficient Conditions for Efficient Classical Simulation of Quantum Optics
- Properties of bright squeezed vacuum at increasing brightness
- Conditional non-Gaussian quantum state preparation
- Production and applications of non-Gaussian quantum states of light
- Quantifying entanglement of parametric down-converted states in all degrees of freedom
- Spatiotemproal effects on squeezing measurements
- Evolution equation for multi-photon states in turbulence