qml.devices.default_gaussian

The default.gaussian device is a simulator for Gaussian continuous-variable quantum computations, and can be used as a template for writing PennyLane devices for new CV backends.

It implements the necessary Device methods as well as all built-in continuous-variable Gaussian operations, and provides a very simple simulation of a Gaussian-based quantum circuit architecture.

Classes

DefaultGaussian(wires, *[, shots, hbar, ...])

Default Gaussian device for PennyLane.

Functions

beamsplitter(theta, phi)	Beamsplitter.
coherent_state(a[, phi, hbar])	Returns a coherent state.
controlled_addition(s)	CX gate.
controlled_phase(s)	CZ gate.
displaced_squeezed_state(a, phi_a, r, phi_r)	Returns a squeezed coherent state
displacement(state, wire, alpha[, hbar])	Displacement in the phase space.
fock_expectation(cov, mu, params[, hbar])	Calculates the expectation and variance of a Fock state probability.
fock_prob(cov, mu, event[, hbar])	Returns the probability of detection of a particular PNR detection event.
gaussian_state(cov, mu[, hbar])	Returns a Gaussian state.
homodyne([phi])	Function factory that returns the Homodyne expectation of a one mode state.
identity(*_, **__)	Returns 1.
interferometer_unitary(U)	InterferometerUnitary
partitions(s[, include_singles])	Partitions a sequence into all groupings of pairs and singles of elements.
photon_number(cov, mu, params[, hbar])	Calculates the mean photon number for a given one-mode state.
poly_quad_expectations(cov, mu, wires, ...)	Calculates the expectation and variance for an arbitrary polynomial of quadrature operators.
quadratic_phase(s)	Quadratic phase shift.
rotation(phi)	Rotation in the phase space.
set_state(state, wire, cov, mu)	Inserts a single mode Gaussian into the state representation of the complete system.
squeezed_cov(r, phi[, hbar])	Returns the squeezed covariance matrix of a squeezed state.
squeezed_state(r, phi[, hbar])	Returns a squeezed state.
squeezing(r, phi)	Squeezing in the phase space.
thermal_state(nbar[, hbar])	Returns a thermal state.
two_mode_squeezing(r, phi)	Two-mode squeezing.
vacuum_state(wires[, hbar])	Returns the vacuum state.

code/api/pennylane.devices.default_gaussian

 

Download Python script

 

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