quantumlib/Cirq v0.9.0 on GitHub

Major usability changes:

Batching support in Google's Quantum Engine API as well as in Samplers in general
Faster parameter resolution for a wider set of types
You can now use cirq.parameter_names, cirq.parameter_symbols to extract parameter names from your circuit
Default values for Arg serializers are being introduced in two steps: first the deserializer (#3280), later the serializer will be introduced
Extensive documentation on Pasqal
Extensive documentation on Google's Quantum Computing Service
Google Quantum Engine can list jobs and programs
Python 3.7 and 3.8 are now continuously tested and dependency issues are resolved
Experimental support for Quimb Tensor Network Simulators (#3129)
We removed wavefunction, wave_function, or state - now, state_vector is consistently used instead

Breaking changes:

cirq.approx_eq now raises an AttributeError if the symbolic evaluation can't unambiguously decide the equality, before it returned False #3195
cirq.google.Engine methods run, run_sweep and create_program now raise ValueError if gate_set is not specified #3138
cirq.google.Engine constructor signature change: context is now last to signal that direct usage isn't recommended #3151
cirq.google.is_native_xmon_gate, cirq.google.is_native_xmon_op, cirq.google.pack_results, cirq.google.unpack_results are now removed, they are still accessible but through the deprecated cirq.google.api.v1.programs module #3204
circuit + gate behavior changed, it won't create an extra moment, instead packs the new gate efficiently #3364

New protocols:

cirq.act_on
cirq.pauli_expansion

New top level objects:

Top level objects that are marked as deprecated and will be removed in coming releases:

cirq.QFT
cirq.final_wavefunction
cirq.has_mixture_channel
cirq.mixture_channel
cirq.subwavefunction
cirq.validate_normalized_state
cirq.wavefunction_partial_trace_as_mixture
cirq.SimulatesIntermediateWaveFunction
cirq.TrialResult
cirq.WaveFunctionSimulatorState
cirq.WaveFunctionStepResult
cirq.WaveFunctionTrialResult
cirq.google.engine_from_environment

A Huge Thank You to all our contributors for this release:

AJ Hanus
Abhik Banerjee
Adam Zalcman
Alexis Shaw
Animesh Sinha
Billy Lamberta
Bálint Pató
Craig Gidney
Dave Bacon
David Yonge-Mallo
Dmytro Fedoriaka
Doug Strain
Henrique Silvério
Kevin J. Sung
KevinVillela
Mark Daoust
Matteo Pompili
Matthew Harrigan
Matthew Neeley
MichaelBroughton
Oliver O'Brien
Orion Martin
Peter Karalekas
Ryan LaRose
Samarth Vadia
Seb Grijalva
Shadab Hussain
Shaswata Das
Tanuj Khattar
Tony Bruguier
Yash Katariya
Yusheng Zhao
Zachary Crockett
crystalzhaizhai
karlunho
smitsanghavi
tonybruguier-google
yourball

Full change list:

65abd00 releasing v0.9.0
2c0c481 Fix quimb version checking (#3378)
ddb4071 Fix np.pad issue in numpy 1.16 (#3377)
67444ea Fixing sympy imports (#3376)
8d5a3af Improve GridQubit dictionary lookup performance 3x (#3375)
8802685 Un-invert B gate (#3373)
5029af4 Do not perform extra optimizations in "via B" decomposition (#3370)
0d961ad Python 3.8 support (#3365)
0bb9239 Change names of focused calibration protos for consistency. (#3369)
be1d024 Greedy router (#3360)
46f8df7 Extending types for symbol resolution fast pass-through (#3366)
fa80d4c Add extensions to document public constants (#3367)
e852d58 Add cirq.StabilizerSampler (#3355)
b65e0b4 Adjust Circuit.__add__ behavior to match Circuit.__iadd__ (#3364)
83c1f23 Docs for listing jobs and programs (#3362)
fb164bb Adds cirq.num_cnots_required and cirq.to_special (#2892)
bba0153 Execute TODO to have the prob mass auto added (#3363)
fa99585 Add symmetric depol (#3361)
730cc24 Adding default values to op serializers and deserializers (#3280)
fa433c3 s|TrialResult|Result (#3344)
43aed78 ignore q in gridqubit ids (#3357)
e0a078a Fix NumPy 0.19 related issues (#3358)
89d3383 feat(cirq): Add greedy implementation of aligning 1-qubit, and 2-qubit gates optimizer (#2869)
37f5cb2 Generalize asymmetric depolarization channel to multiple qubits (#3262)
8a69e8e Make PauliString's key type generic (#3325)
4406b2d Various updates to automerge script deployment (#3334)
9bb96d2 adds pasqal pages to devsite (#3352)
b73a53b adding 3.7 to the tests (#3348)
7c63a42 Added Moment operation at (#3339)
4298a97 Refactor to_resolvers to use to_sweeps (#3343)
77eed43 added NamedQid and GridQid to the qudit concept page (#3338)
64939e5 Explaining Engine API access (#3337)
0105808 Add methods for converting dict to product or zip sweep and deprecate implicit cartesian product (#3333)
b5a4269 pygment 2.6.1 to fix readthedocs (#3336)
8511426 Moving style.md to the developer documentation (#3335)
896c03a Add ActOnStabilizerCHFormArgs (#3326)
d95682b Implement cphase (#3332)
c2c7d60 Automerge bot on GCP (#3317)
1a3c53c Fix link to RFC process in CONTRIBUTING.md (#3331)
11933d1 Improve parameter-related types and documentation (#3330)
946665d Change _book.yaml to point to /reference/python (#3328)
50eba00 Add TensorProductState, a state-vector-like object (#3171)
b0f42a1 List Engine jobs (#3322)
a024787 Update book for api gen changes (cl/331666270) (#3321)
dd3df77 Change MutablePauliString from private to public (#3299)
bfedcbc List programs (#3320)
0f29fae cleanup engine docstrings (#3319)
c53ef33 Improve initial_state handling for CliffordTableau and StabilizerStateChForm (#3309)
20df07e Add cirq.QubitPermutationGate (#3298)
054fa07 Add CPMG to T2 experiment (#3255)
e2f1ec5 Add docs for batched_result (#3314)
01ae472 Implement speckle purity benchmarking as part of grid XEB (#3291)
a98808a Add run_batch to Sampler and QuantumEngineSampler (#3265)
09dc178 moving cirq-unstable publishing to Github Actions (#3311)
c652c88 Update gates.ipynb (#3312)
6b1422a Add parameter_names and parameter_symbols protocols. (#3273)
ae59093 Adjust docs for Getting started guide (#3307)
f0666bf Adding documentation on Request for proposals (#3097)
dca2cb4 Fix a bug in validating computational basis limits (#3306)
55502f1 Split right multiplication into separate methods in StabilizerStateCHForm (#3259)
ecd5326 Add batched_results() to retrieve BatchResult (#3303)
6132129 Add Moment.with_operations and use in Circuit.batch_insert_into (#3282)
60b4ad3 Fix command-line engine start up guide (#3304)
e61e277 Add information on downloading historical results (#3300)
a97479e Add a few extra links to documentation (#3301)
0c17bc9 Add information about batching restrictions (#3296)
0fc057a Update documentation on bell_inequality.py example (#3281)
e04187c Quantum Engine documentation (#3283)
1a41835 Add more information about gates and best practices (#3287)
a62ed8b removing readthedocs.io references (#3294)
65876a9 fix hanging docs build + bad cleanup logic (#3284)
1699cb3 Minimum required version of quimb. (#3272)
431d986 Add SupportsPauliExpansion (#3270)
39e6fb8 docstrings for type aliases in devsite API docs (#3275)
749468b Update book/index (#3268)
52a2c49 Give mypy a hint (#3271)
898a1ff Add allow_decompose flag on has_channel (#3249)
77d0170 Fix copyright notes: Google LLC -> The Cirq Developers (#3264)
4041362 Added qid version of Named Qubit (#3187)
e0fbadc [automerge/cirqbot] paging for PR events (#3251)
dbf0bcf Calibration proto fixes (#3261)
b38b8d1 Add shortcut for get_engine_calibration (#3258)
df755d9 Use num_qubits protocol in ActOnCliffordTableauArgs (#3260)
3a08c52 Add protos for Focused Calibration (#3222)
2a4222e Fix documentation of [Engine, EngineProgram].run_batch (#3254)
ac21df5 Fixing a bunch of typos (#3252)
826db47 [qpolish] dev-site & readthedocs hybrid (#3227)
140fb95 Add pow function to arg_func_lang (#3218)
a77bec6 Feature request template (#3236)
b9c4702 Upgrade to sphinx 3.2.* and fix warnings (#3247)
1e2c30e Add get_engine_device shortcut (#3225)
3e00896 A example of Qec using Shor's Code (#2922)
656e388 Escape special characters in Jupyter circuit diagram (#3221)
29e6c52 Add JsonResolver mypy type for custom json resolvers (#3223)
aff27b8 Add Moment.sub and generalize Moment.add (#3216)
72c2a9f Minor Correction to Dev Docs. (#3217)
d244bf7 Disable cirq v1 api docs (#3215)
1aabcb7 Add initial support for converting Quil programs into Cirq circuits (#3211)
193c35d Add jupyter-compatible repr for SerializableDevice (#3207)
b878d06 Add missing factor of pi to parameterized Quil gate output (#3206)
0caaeb5 Remove cirq v1 programs from namespace (#3204)
9de4390 Rewrite sympy in 20 lines (#3205)
059006d Qc render fix (#3186)
4bab2d2 Approximately equal circuits with symbols not detected by cirq.approx_eq (#3195)
3c7fc5d Document matrices for parity gates (#3199)
4e9681f Fix docs build (#3201)
143ac08 Quimb Tensor Network Simulators (#3129)
4539bb9 Adding Pasqal documentation (#3193)
335aba8 Cosmetics: e.g. vs i.e. (#3191)
d848611 [Pasqal updates] Adding PasqalVirtualDevice (#3181)
cf27230 Fix signs of rotation gates in gate tutorial (#3180)
b21baea [Pasqal updates] Updated gate set (#3160)
4f30b57 Fixed Issue #3178 (#3179)
f3acfbd Adding a DFE Jupyter notebook (#2932)
c5584c0 adding rstcheck for rst files (#3177)
2bc9973 Fix readme section headers (#3176)
53fe161 fixing broken deprecation namings (#3174)
d16f3a1 Preserve (and resolve) tags when resolving TaggedOperation (#3172)
3577ea2 Add Hidden Shift Algorithm example (#3052)
a7a8689 cirq-dev and other updates to README.rst (#3167)
75e5f74 Unit test for Clifford check skipping multi-qubit unitaries (#3168)
7bf16e1 Use device instead of gateset validation in ZerosSampler (#3142)
6f24531 Test the right order finder (#3166)
7a4ccaf Skip unitary in Clifford check (#3165)
0952958 Remove q from calibrations.py (#3163)
74c0aa8 Add get_engine and deprecate engine_from_environment (#3151)
3076bba [Pasqal updates] Removing ThreeDGridQubit (#3161)
a7b1317 Adding Quantum Chess tutorial (#3162)
a16824f CI check for uncommitted generated proto files (#3159)
4bf14c1 Fix calibration metric names in docs (#3155)
65f2b16 fix bug in deprecated collapse_wavefunction (#3156)
ea20a18 Adding documentation about big endian values (#3146)
d1b374c checkout@v1 to v2 (#3158)
4f20b00 [Pasqal updates] PasqalDevice class generalization (#3141)
4abff18 Propose a bug report issue (#3119)
ee35ee9 Remove ProtoVersion.V1 from Engine (#3147)
88779d4 Create double_val in oneof for program (#3140)
8ad5186 get_engine_sampler (#2767)
8ccca1b Modify PointOptimizer to handle multiple modified gates acting on the same qubit in a moment (#3016)
12a2a9a std dev on fidelity (#2977)
8afb02c Add ZerosSampler (#2912)
b3728aa release process nits (#3137)
72808f3 [Pasqal updates] New qubit classes (#3133)
8071b0c Remove XMON as engine default (#3138)
1249276 Add docs for circuit batching (#3134)
fb9fbac Add ActOnCliffordTableauArgs. Support it in act_on for common gates and measurements. (#3063)
adc8964 Bump protobuf requirement to 3.12.x (#3132)
c869e0e Support adding numpy arrays to GridQubits (#3131)
190e842 Add getitem to EngineJob (#3128)
1a6c6f6 Add grid parallel two-qubit XEB (#2834)
62ef7f7 Fix some test incompatibilities with latest numpy (#3107)
b21294b Add batch support to cirq Engine client (#3114)
df52d1c Add KakDecomposition.decompose by fixing factor of 2 error in exp(PauliString) (#3125)
4e44446 Add MeasurementGate.with_key to change measurement key (#3123)
b37f226 Improve docstrings for controlled common gate overrides (#3117)
76472fd Add a code of conduct (#3118)
a06be71 Defensively copy state vector in simulator (#3115)
a610aab Only override control when global phase is zero (#3113)
5934b5a Defensively copy density matrices in simulator (#3109)
bbd8a2d Change Operation.with_qubits return type to match self type (#3112)
7cfef7a Preserve external simulator recommendations. (#3108)
f3fec91 Expose methods in contrib.noise_models (#3102)
a69b82f Reduce numpy version
d75467d Implement unitary protocol for linear combinations (#3096)
b0a4599 Fix split_into_unitary_then_general not spreading blocks across operation (#3095)
037afff Fix cirq.Simulator assuming a reset is safe to cache before sampling (#3093)
b0b398e Add circuit_diagram_info to cirq.PauliString (#3094)
7f0bb62 Api builds (#3090)
c866d23 Fix Quirk import extra gates bug
d3ce7cc Fix flakes in random_circuit_test (#3084)
2b5e176 Add generated code for batch.proto (#3086)
f55090a Support multi-qubit measurement in plot_state_histogram (#3054)
20fb717 [SVG] Noise hack and font fix (#3076)
e1e0038 Make LinearDict json serializable (#3072)
c69af97 Fix build-doc github action failure (#3082)
8cc7d93 Add Circuit.zip method (#3075)
2b8b085 Fix IdentityGate.on_each failing when given a qubit that is iterable (#3036)
03a7dc8 Disentangle MS gate and XXPowGate. (#3015)
d998b3a Add Batched requests to Google's cirq messages (#3064)
4860f5c Add missing methods to cirq namespace (#3070)
369ed54 Use FromString classmethod for protos (#3066)
d9c0221 Add .gitattributes file to hide proto generated code in PRs (#3065)
7191cb5 Adds pylint on only changed files. (#3038)
008eab4 Fix VirtualTag (#3051)
caab356 Fix methods missing from doc strings (#3048)
eb4ad79 Add a docstring to testing default gate domain constant (#3047)
fd62530 Fix empty gate domain problem in random_circuit (#3037)
b45b7ef Heed deprecation notice for has_mixture_channel (#3040)
e301b40 Add support for monte carlo channel simulation (quantum trajectories) (#3043)
79d83e0 Add mixture support to Controlled{Operation,Gate} (#3042)
0068c4e Deprecate QFT to qft (#3039)
9f0b49b Add increment proto build and use in CI (#3012)
804c8e5 Deprecate mixture_channel in favor of just mixture (#3026)
28962e6 Updates random_circuit for single qubit circuits (#3029)
127fdae Fix Gate.on_each failing when a Qid class has an iter method (#3030)
e9ac2ba Deprecation: State_vector not wavefunction, wave_function, or state. (#3022)
e697284 Add with_probability modifier to Gate and Operation (#3024)
a344fb7 Add act_on protocol (#3019)
77efcbc Add support for PhasedXZ in EjectZ optimizer (#2951)
3631460 Fix local lint warnings in text_diagram_drawer.py (#3025)
f48e0c6 ContextManager for testing logs (#3009)
5c76c2c Generalize measurement_key to measurement_keys protocol (#2944)
70dc5ef No longer need to install asteroid in CI
505ee1f Bump pytest-asyncio version to remove warning (#3014)
93ecd24 [SVG Circuits] Give up gracefully on gates with big labels (#3007)
5d6b8bc Fix an equation which does not display correctly in nbsphinx. (#3008)
1d21e96 Fixes obvious typo (#3005)
e907109 Update contributing markdown links
6d72b98 Fix some documentation for engine
3d645b7 Enable serialization of non-GridQubits. (#2966)
6bdcb1c Initial T2 experiment (#2725)
c7a8c19 Add the release procedure to the markdown file in cirq (#2992)
17e27e6 Add timeout to engine object (#2996)
8e30cf6 Add tests for module wrapping in _compat
047421d set dict when wrapping module
e5af689 Fix PauliString exponentiation (#2989)
f532a86 Harden arg function serialization
03a91fe Enforce argument types in engine client
a98041d First iteration of the outputting to Quil. (#2903)
4a0ded7 Add TwoQubitDiagonalGate (#2891)
f0be329 Doctest fix. (#2987)
32c769f Make circuit rendering of swap-like gates consistent (#2945)
502a5f3 Decompose cphase to two fSim gates (#2955)
6aa0a02 Update protobuf version
720ea34 Pipe seed into quantum teleportation example
2899c1f Update asteroid version (#2976)
78fc4c2 Cleanup TODOs and corresponding Github issues
0915ac2 Fix Problem with Y gates in Clifford Simulator (#2960)
8e980fd Bump version of master to 0.9.0.dev

quantumlib/Cirq v0.9.0 Cirq v0.9.0 on GitHub

quantumlib/Cirq v0.9.0
Cirq v0.9.0

on GitHub