QVM is a contractual agreement between Ford and the aftermarket. Vocations include:. QVM Programs do not certify or approve aftermarket modifications. Incomplete Vehicles are supplied to the upfitter and the upfitter is the Final Stage Manufacturer of record. The upfitter assumes liability for their modifications made to the OEM vehicle. Bid specifications often require QVM participation on non-Ford based products. Also, insurance companies often charge lower rates for QVM vehicles.
QVM Programs provide support for the commercial industry and bring back critical voice-of-the-customer input for PD programs by:. Note: Cache needs to be cleaned when adding new feature flags to ensure libraries compile with correct flags. RANGE must be a non-negative fixnum. Combines two noise models NM1 and NM2 by concatenating their rules. This way, either rule can be matched by an instruction.
Create a copy of the wavefunction WF. Only copy as many elements as can be copied, namely min wf , destination. Given a probability of depolarization PROB, calculate the kraus operation elements for the depolarizing channel. Calculate the tensor product of two kraus maps K1S and K2S by tensoring their elems.
If one of the kraus maps is NIL, tensor the other with the identity matrix. We need to specify N in the rule because a 2 qubit gate CNOT 0 1 could match a rule with qubits that has operation elements for a 1q gate. We want to prevent this, so we require the user to specify the number of qubits expected in the gate. Combines two noise models NM1 and NM2 in a way such that both set of rules, or one and not the other could be matched by an instruction.
Logical AND of 2 noise predicates. Logical OR of 2 noise predicates. Return two values:. Modify the density matrix appropriately. Modify the amplitudes of all other qubits accordingly. Non-deterministically perform a measurement on the qubit addressed by Q in the quantum abstract machine QAM.
Non-deterministically perform a measurement on all qubits in the quantum abstract machine QAM. The convention we use is that more specific predicates get higher priorities. Historical note: used to also return pc. At each instruction, damping, dephasing, and depolarizing noise is applied for the qubits involved in the instruction.
A hash table of qubit to depolarization operators, representing gate application noise. Gate over-rotations and under-rotations average out to the depolarizing channel.
A hash-table of qubit idx to a list of povms, representing the readout assignment probabilities p 0 0 p 0 1 p 1 0 p 1 1. To calculate the kraus operators for T1, T2, etc. Ideally, this gate time should be the duration of the gate preceding the application of the kraus noise. As an approximation, this value should represent the average gate time of the gates that will be run.
A value to keep track of the elpased time of the program. The elapsed time is used for calculating the kraus operators of some noise value at a given point in the program. A mixin for quantum abstract machines making use of a classical memory subsystem and a program vector.
The default does nothing and just warns. A hash table of qubit to readout noise assignment probabilities, given as a 4-element list p 0 0 p 0 1 p 1 0 p 1 1.
A list of kraus maps to apply when the rule is matched. Each kraus map is a list of kraus operators. Note that we model purely classical readout error, i. A second wavefunction used when applying a noisy quantum channel. The actual values can be initialized in any way because they will be overwritten.
As such, it merely is scratch space for intermediate computations, and hence should not be otherwise directly accessed. A reference to the original pointer of amplitude memory, so the amplitudes can sit in the right place at the end of a computation.
The complex float type used in computations. Typically these will represent wavefunction amplitudes. Describes the position of a noise rule relative to an instruction. A representation of an operator on a quantum state. This will be a unitary square matrix where each dimension is a power-of-two. An association list of kernels. The defined function will take three arguments:. Iterate over the elements of the nat tuple NT in increasing order.
The return value is unspecified. Then pick this j as the choice of Kraus operator to apply. Build the dephasing map. If TPHI is not null, use that to calculate the dephasing map. In particular, we require that the Kraus operators are all of equal matrix dimension with equal numbers of rows and columns. A subsystem with the qubit factored out. If the qubit is not a part of the system, it is assumed to be in the zero state. Wrap-around if needed. See its documentation for details.
BODY-GEN should be a unary function which takes as an argument the symbol referring to the generated address, and produces a form that uses that address. This form should act as the operator. The first argument will be a list of symbols that will be bound to the wavefunction-addressed values in order. The second argument will be a list of SETF-able accessor forms for those values.
COLUMN should be a list of symbols all of which should eventually be bound to the vector being multiplied.
0コメント