Changelog Deprecated Deprecate Bit.index and Bit.register (#6069) ScheduleBlock 3/4 - add ScheduleBlock (#5854) Deprecate probability distribution circuits (#6080) Deprecate circuit.combine and circuit.extend (#4208) Deprecate matmul and mul in qinfo (#5834) Improved Pauli operator class (#5261) Allow process fidelity to work with a non-unitary target channel (#5339) Optimize allocated qubits in arithmetic circuits (#5332) Deprecate Python 3.6 support (#5301) Migrate qiskit.util module to qiskit.utils (#5420) Deprecate schemas in qiskit-terra (#5262) Added ScheduleBlock 3/4 - add ScheduleBlock (#5854) Boolean expression object (#5830) Overload & and ^ for ciruit.compose and circuit.tensor (#6065) Migrate basic aer provider to new versioned interface (#5128) add ECR gate and approximation_degree option (#5609) Add documentation guide on writing a provider (#5406) Enable parallel_map on windows (#3547) Add fake backends for new IBM Quantum devices (#6021) Add additional basis gates rz, sx, x to basicaer. (#6022) Implemented Random Shuffling in CSPLayout (#5994) new 16Q device map (#6013) Transfer the CNOTDihedral Operator class (#5442) Improved Clifford synthesis method (#5779) Add reverse_qargs to Operator (#5970) Add simplify of U3->U1/U2 in OneQubitEulerDecomposer (#5554) Add calibrations with the TemplateOptimization (#5752) Allow passmanager.append(flowcontroller) instead of passes (#5772) Clifford templates (#5769) Easier way to call a pass on a circuit (#5503) Enable user defined cost dict for templates (#5521) Issue 5549 template matching (#5550) More efficient C3X implementation (#5668) Add PauliTwoDesign to the circuit library (#5552) Add reverse_qargs to Statevector and DensityMatrix (#5464) Amplitude Estimation algorithms (#5517) Improve decomposition of (multi-)controlled-z (#5572) Add PiecewiseChebyshev arithmetic circuit (#5364) Add readout_length to backend properties (#5516) Improved Pauli operator class (#5261) Allow process fidelity to work with a non-unitary target channel (#5339) Add metadata attribute to QuantumCircuit (#5270) routing_method='none' and Error pass (#5274) Allow specifying the last interval in PiecewisePolynomialPauliRotations (#5480) Add environment variable for number of procs in parallel_map (#5384) ParameterExpression.eq takes bounded expr == value (#5444) Add support for circuits and labels in Statevector.equiv (#5215) Add integer option to initialize to init using bitmap (#5418) Add support for Python 3.9 (#5189) Added meas_level and meas_return for circuit jobs (#5452) Gradient functionality for parameter expressions (#5181) Support complex parameters (#5192) Add R(v) gate; rotation wrt rotation vector (#5336) Add circuit.tensor (#5295) Add PiecewisePolynomialRotations and InverseChebychev to the circuit library (#5219) Add user config file options to control parallel execution (#5324) fixed issue 3908 by adding trigonometric functions to ParameterExpres… (#4854) allow Initialize from labels (#5229) Adding Pauli to the standard gate library (#5153) Changed ScheduleBlock 3/4 - add ScheduleBlock (#5854) Set sympy.evaluate(False) on frequent code paths for phase tracking. (#6072) Migrate basic aer provider to new versioned interface (#5128) Added reverse_bits parameter to plot_bloch_multivector() (#5959) (#6014) Deprecate matmul and mul in qinfo (#5834) QFT little endian (#4849) Name-ordered circuit parameters (#5759) Make Register and Bit hashed attrs immutable (#5867) quantum_info.operator mixin interface refactor (#5617) Wrap qiskit.Aer and qiskit.IBMQ with lazy loading object (#5619) Change ParameterExpression eq to sympy equals() (#5760) Add a lazy loading wrapper class for qiskit_version (#5620) ScheduleBlock 1/4 - remove timeslot dependency from instruction (#5681) Create explicit C3XGate/C4XGate in MCXGrayCode (#5601) Log warning instead of raise exception in channel measures (#5594) better initial_layout validation (#5526) EquivalenceLibrary.draw to return SVG instead of PNG. (#5355) Improved Pauli operator class (#5261) Do not execute CSPLayout if layout_method is set in transpile (#5495) Add __array__ method to Gate and quantum_info classes (#5402) allow statevectors to be parameter in initialize (#5190) Move Quaternion from operators to synthesis (#5449) Add user config file options to control parallel execution (#5324) Register or QuantumCircuit raises when an ambiguous non-integer gets passed to (#4858) Removed Remove deprecated interactive visualizations (#5991) Remove circuit methods deprecated in 0.14.0 (#5948) Wrap qiskit.Aer and qiskit.IBMQ with lazy loading object (#5619) Remove deprecated pulse code (#5564) passmanager(..., callback=...) parameter removed (#5522) Migrate ApproximateTokenSwapper to only use retworkx and make networkx optional (#5471) Remove deprecated DAGCircuit.qubits() and .clbits() methods. (#5433) Remove deprecated quantum_info methods (#5439) Fixed no full scheduling of circuits with delay unless explicitly requested (#6084) Fix RecursionError in SummedOp.to_pauli_op() and enhance PauliOp.tensor(), PauliSumOp.tensor() (#6111) Properly clear parameter table on remove_final_measurement (#6109) Fix TaperedPauliSumOp.to_matrix_op() (#6102) Fix CalibrationBuilder (#6067) Fix condition in BasisTranslator and change node.condition to @property (#6040) Enable consolidate blocks to to work with single gate blocks (#6024) Fixes QASM parser to handle U (#6077) Subcircuits with classical wires stay right of measures (#5958) Update interpretation of meas_map in Qiskit (#5971) fix plot_state_city if only real axis is specified (#6015) Remove delays from Acquire Channels (#6000) fix unique circuit names when binding parameters (#5851) Remove DagNode.hash() (#5979) make commutative_cancellation basis aware (#5672) fix for permutation circuit (#5813) Added left hand side calibrations carry over with + operator. (#5946) Fix to carry over calibrations with iadd and add (#5910) fix global phase in Instruction.inverse (#5925) Fix circular entanglement edge case in NLocal (#5884) fix qasm output with open controlled gates (#5688) Fixed inconsistency in gate names between text and matplotlib backends (#5360) Fix marginal_counts incorrect creg_sizes with Result object and add format_marginal kwarg (#5490) Fix parameter handling in global phase (#5807) clean classical bits after QuantumCircuit.remove_final_measurements (#5808) Global phase in TwoQubitBasisDecomposer (#5764) Fix incorrect durations in scheduled circuit (#5778) Fix handling of classical bits in timeline drawer and non-treament of delay as idle time (#5662) Fix incorrect qargs setting in sabre_swap (#5749) Raise if attempting to convert parameterized circuit to qasm. (#5705) add matrix rep for delay instruction (#5704) Update the definition of the Hellinger fidelity (#5595) Add unroll step to level2 passmanager optimization loop (#5671) Fix global phase tracking around DAGCircuit.substitute_node. (#5618) Fix U2Gate decomposition in QuantumCircuit.u2 deprecation message. (#5660) Fix global phase in OneQubitEulerDecomposer using PSX and ZSX basis and in Diagonal gate (#5474) Fix & refactor the linear combination of unitaries gradients (#5501) Output transpiled circuit in dt (#5563) Propagate Pauli phase when evaluating PauliOp (#5602) Unroll parametervectors in circuit.execute (#5593) Avoid collecting non atomic nodes in 1q runs (#5570) Fix global phase handling in circuit.repeat (#5588) Use actual gate name in backend monitor (#5546) Fix quantum Fisher information computation based on overlap (#5508) Add ZSX Euler basis to UnitarySynthesis pass. (#5583) Durations populated from calibrations (#5562) Test calling BlueprintCircuit.to_instruction directly after construction (#5544) Fix unbound template parameters in template substitution (#5534) Conditionals must display to the right of measures using the same register (#5397) Fixed handling of "decimals" parameter by updating format_statevector and format_unitary (#5347) Add missing layout data for ibmq_casablanca. (#5492) Fix compensate_phase of pulse.builder.frequency_offset (#5489) [Issue 5304]: Typecast to float only if bound to parameters (#5455) Convert delays to instructions when assembling (#5481) Bug fix to ensure that calibrations are carried over by circuit compose (#5396) Optimize allocated qubits in arithmetic circuits (#5332) Make optimize_1q_gates U and P aware (#5429) Honor initial_layout when coupling map is None (#5346) transpile singleton (#5298) conditional wires are draw as classical wires in text circuit drawer (#5206) Remove lone identity gates in Optimize 1q decomposition pass (#5292) fix hash bug (#5379) fix hasattr in get_options (#5370) Add ZSX basis to one qubit decomposition and optimization pass (#5314) Fix bug in quantum channel subtraction (#5343) Fix global phase tracking for Unroller, OneQubitEulerDecomposer, and ControlledGate (#5248) Fix qubits indexing in Statevector._evolve_instruction (#5286) Fix display of backend name in Result.repr (#5284) Fix bug: execute valid circuits built with delays (#5302) Fix issue with frequency change visualization. (#5253) classical_function decorator to handle parsing indented define. (#5288) Fix C4XGate QASM definition. (#5265) Restore using aqua from release for tutorials job (#5246)