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Qiskit Terra 0.6.0
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@atilag atilag released this 04 Oct 10:02
0.6.0
a3c67a5
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Changelog

Added

  • Added SchemaValidationError to be thrown when schema validation fails (#881)
  • Generalized Qobj schema validation functions for all qiskit schemas (#882).
  • Added decorator to check for C++ simulator availability (#662)
  • It is possible to cancel jobs in non comercial backends (#687)
  • Introduced new qiskit.IBMQ provider, with centralized handling of IBMQ
    credentials (qiskitrc file, environment variables). (#547, #948, #1000)
  • Add OpenMP parallelization for Apple builds of the cpp simulator (#698).
  • Add parallelization utilities (#701)
  • Parallelize transpilation (#701)
  • New interactive visualizations (#765).
  • Added option to reverse the qubit order when plotting a circuit. (#762, #786)
  • Jupyter notebook magic function qiskit_job_status, qiskit_progress_bar (#701, #734)
  • Add a new function qobj_to_circuits to convert a Qobj object to
    a list of QuantumCircuit objects (#877)
  • Allow selective loading of accounts from disk via hub/group/project
    filters to IBMQ.load_accounts().

Changed

  • Schema tests in tests/schemas/test_schemas.py replaced with proper
    unit test (#834).
  • Renamed QISKit to Qiskit in the documentation. (#634)
  • Use Qobj as the formally defined schema for sending information to the devices:
    • introduce the qiskit.qobj module. (#589, #655)
    • update the Qobj JSON schema. (#668, #677, #703, #709)
    • update the local simulators for accepting Qobj as input. (#667)
    • update the Result class. (#773)
  • Use get_status_job() for checking IBMQJob status. (#641)
  • Q network hub/group/project credentials replaced by new url format. (#740)
  • Breaking change: Jobs API simplification. (#686)
  • Breaking change: altered tomography APIs to not use QuantumProgram. (#818)
  • Breaking change: BaseBackend API changed, properties are now methods (#858)
  • When plot_histogram() or plot_state() are called from a jupyter
    notebook if there is network connectivity the interactive plots will be used
    by default (#862, #866)
  • Breaking change: BaseJob API changed, any job constructor must be passed
    the backend used to run them and a unique job id (#936).
  • Add support for drawing circuit barriers to the latex circuit drawer. This
    requires having the LaTeX qcircuit package version >=2.6.0 installed (#764)

Deprecated

  • The number_to_keep kwarg on the plot_histogram() function is now
    deprecated. A field of the same name should be used in the option
    dictionary kwarg instead. (#866)
  • Breaking change: backend.properties() instead of backend.calibration()
    and backend.parameters() (#870)

Removed

  • Removed the QuantumProgram class. (#724)

Fixed

  • Fixed get_ran_qasm methods on Result instances (#688).
  • Fixed probabilities_ket computation in C++ simulator (#580).
  • Fixed bug in the definition of cswap gate and its test (#685).
  • Fixed the examples to be compatible with version 0.5+ (#672).
  • Fixed swap mapper using qubits after measurement (#691).
  • Fixed error in cpp simulator for 3+ qubit operations (#698).
  • Fixed issue with combining or extending circuits that contain CompositeGate (#710).
  • Fixed the random unitary generation from the Haar measure (#760).
  • Fixed the issue with control lines spanning through several classical registers (#762).
  • Fixed visualizations crashing when using simulator extensions (#885).
  • Fixed check for network connection when loading interactive visualizations (#892).
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