QETLAB:Change log/v0.9: Difference between revisions
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Created page with "===New functions=== * <tt>BCSGameLB</tt>: Computes a lower bound on the quantum value of a binary constraint system (BCS) game. * <tt>BCSGameValue</tt>: Computes the m..." |
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* <tt>[[InducedMatrixNorm]]</tt>: Computes a lower bound on the induced p->q norm of a matrix. | * <tt>[[InducedMatrixNorm]]</tt>: Computes a lower bound on the induced p->q norm of a matrix. | ||
* <tt>[[InducedSchattenNorm]]</tt>: Computes a lower bound on the induced Schatten p->q norm of a superoperator. | * <tt>[[InducedSchattenNorm]]</tt>: Computes a lower bound on the induced Schatten p->q norm of a superoperator. | ||
* <tt>[[L1NormCoherence]]</tt>: Computes the | * <tt>[[L1NormCoherence]]</tt>: Computes the ℓ<sub>1</sub>-norm of coherence of a quantum state. | ||
* <tt>[[NonlocalGameLB]]</tt>: Computes a lower bound on the quantum value of a two-player non-local game. | * <tt>[[NonlocalGameLB]]</tt>: Computes a lower bound on the quantum value of a two-player non-local game. | ||
* <tt>[[RandomPOVM]]</tt>: Computes a random POVM of a specified size and with a specified number of outcomes. | * <tt>[[RandomPOVM]]</tt>: Computes a random POVM of a specified size and with a specified number of outcomes. | ||
Latest revision as of 18:59, 12 January 2016
New functions
- BCSGameLB: Computes a lower bound on the quantum value of a binary constraint system (BCS) game.
- BCSGameValue: Computes the maximum value of a binary constraint system (BCS) game. In classical and no-signalling settings, the value computed is exact, but the quantum value is just an upper bound.
- InducedMatrixNorm: Computes a lower bound on the induced p->q norm of a matrix.
- InducedSchattenNorm: Computes a lower bound on the induced Schatten p->q norm of a superoperator.
- L1NormCoherence: Computes the ℓ1-norm of coherence of a quantum state.
- NonlocalGameLB: Computes a lower bound on the quantum value of a two-player non-local game.
- RandomPOVM: Computes a random POVM of a specified size and with a specified number of outcomes.
- RelEntCoherence: Computes the relative entropy of coherence of a quantum state.
- RobustnessCoherence: Computes the robustness of coherence of a quantum state.
- TraceDistanceCoherence: Computes the trace distance of coherence of a quantum state.
- helpers/bcs_to_nonlocal: Converts a description of a binary constraint system (BCS) game into a form that can be presented as a general non-local game.
- helpers/pure_to_mixed: Converts a state vector or density matrix representation of a state to a density matrix.
Changes to existing functions
- Entropy: Fixed a bug that would cause NaN output for some low-rank input states.
- kpNorm: Can now be used as the objective function or as a constraint in a CVX optimization problem, regardless of k and p (only certain special values of k and p were supported previously).
- kpNormDual: Can now be used as the objective function or as a constraint in a CVX optimization problem, regardless of k and p (only certain special values of k and p were supported previously).
- NonlocalGameValue: Added the REPT optional input argument, which lets the user specify the number of times that the non-local game will be repeated in parallel.
- SchattenNorm: Can now be used as the objective function or as a constraint in a CVX optimization problem, regardless of p (only p = 1, p = 2, and p = Inf were supported previously).