Perceval Files

New features and reasons to upgrade

• Noisy states aren't completely computed anymore for sampling simulations, allowing for 15+ noisy photon samplings.

• Perceval Parameter class now supports math expressions with the new Expression class See: https://perceval.quandela.net/docs/v0.13/reference/utils.html#expression

• Perceval handles proxies configuration See: https://perceval.quandela.net/docs/notebooks/Remote_computing.html

• Complete overhaul of the JobGroup feature, to improve its reliability and reduce the number of http requests to a minimum

• Introduce a new noise parameter in NoiseModel: the phase error See: https://perceval.quandela.net/docs/reference/noise_model.html

Improvements

• Native optimised library (exqalibur) is now available for Linux ARM64, making Perceval installable on such an environment (i.e. you can now install Perceval in a Linux virtual machine running on a recent Mac computer)
• Detectors may now be simulated in non-unitary Processors
• Perceval component catalog now contains all major 1-qubit gates See: https://perceval.quandela.net/docs/reference/catalog.html
• JobGroup now has __len__ and __getitem__ operators
• Simulator masks as much of the Fock space as possible to improve memory consumption and computation times (in case of superposed and/or noisy input)
• PostSelect.merge method ignores duplicate conditions
• Components containing variable parameters can now be inverted
• Beam splitter reflectivity to theta conversion manages variable parameters
• Removed several meaningless user warnings

Bug fixes

• Fixed Perceval logging system using a Python logger
• Circuit and Processor renderers wrap and/or reduce text size when it's too long
• Circuits using the same named variable multiple times will now be correctly serialised/deserialised

Other changes

• Perceval no longer deduces the min_detected_photon_filter for noisy and remote simulations. It is now mandatory to pass a value.
• min_detected_photons_filter value in a processor containing heralds is now the minimum expected photon count ignoring any ancillary mode and herald
• Source is no longer a valid parameter when instantiating a Processor

For more information, see: https://perceval.quandela.net/docs/v0.13/legacy.html

You can contact us on the Perceval forum