expectation value Also found in:Dictionary,Thesaurus,Financial,Acronyms. [‚ek‚spek′tā·shən ‚val·yü] (quantum mechanics) The average of the results of a large number of measurements of a quantity made on a system in a given state; in case the measurement disturbs the state, ...
expectation_value(counts, diagonal=None, qubits=None, clbits=None, meas_mitigator=None) GitHub Compute the expectation value of a diagonal operator from counts. This computes the estimator of⟨O⟩=Tr[ρ.O]\langle O \rangle = \text{Tr}[\rho. O]⟨O⟩=Tr[ρ.O], optionally with ...
237 // Specify the quantum circuit expectation value 238 cutensornetStateExpectation_t expectation; 239 HANDLE_CUTN_ERROR(cutensornetCreateExpectation(cutnHandle, quantumState, hamiltonian, &expectation)); 240 std::cout << "Created the specified quantum circuit expectation value\n"; Configure...
We consider the quantum expectation value A= a??ψ|A|ψa〈 of an observable A over the state |ψa〉. We derive the exact probability distribution of A seen as a random variable when |ψa〈 varies over the set of all pure states equipped with the Haar-induced measure. To illustrate ...
One description provides only probabilities for obtaining various eigenvalues of a quantum variable. The eigenvalues and the corresponding probabilities specify the expectation value of a physical observable, which is known to be a statistical property o
The time dependence of the wave function gives rise to time dependence of the expectation value of observables. We have been exploring the difficulties that advanced undergraduate and graduate students have with time dependence of expectation values in quantum mechanics. We have developed and ...
et al. Error mitigation extends the computational reach of a noisy quantum processor. Nature 567, 491–495 (2019). Article ADS Google Scholar Peruzzo, A. et al. A variational eigenvalue solver on a photonic quantum processor. Nat. Commun. 5, 4213 (2014). Kandala, A. et al. Hardware...
Expectation Expectation value Quantum and general physics Quantum basics Value Wave function Wave functions In summary: I understand that the integral is supposed to be$$ int( x * e^(-2*a ( (m*x^2 / hbar) ) dx) = x * A^(-2) - int( A^(-2) * 2 * x dx) = x * A^(-2...
In measuring the x component of angular momentum of a state, by using the expectation value calculation of Lx, i got i/3 h bar - i/3 h bar, does this means that the probability of h bar is i/3 and the probability of 0 h bar is 0 and the probability of -h bar is i/3...
Expectation value Expectation Value Quantum Computer Expectation, Mathematical Expectation, Mathematical Expectation-Conditional Maximization Either Expectation-Confirmation Theory Expectation-Driven Event Monitoring Expectation-Maximization Maximum Likelihood Expectation-Maximization Sequential Monte-Carlo Expectation-Maximizati...