Transfer of Fisher Information in Quantum Postselection Metrology
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DOI: 10.1088/1674-1056/ae194f
Abstract: Postselected weak measurement has shown significant potential for detecting small physical effects due to its unique weak-value-amplification phenomenon. Previous works suggest that Heisenberg-limit precision can be attained using the optical coherent states. However, the observed… read more here.
Keywords: information quantum; postselection; fisher information; metrology ... See more keywords
Generating Greenberger-Horne-Zeilinger states with squeezing and postselection
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DOI: 10.1103/physreva.101.062303
Abstract: Many quantum state preparation methods rely on a combination of dissipative quantum state initialization followed by unitary evolution to a desired target state. Here we demonstrate the usefulness of quantum measurement as an additional tool… read more here.
Keywords: state; quantum; postselection; horne zeilinger ... See more keywords
Harrow-Hassidim-Lloyd algorithm without ancilla postselection
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DOI: 10.1103/physreva.107.042408
Abstract: Harrow-Hassidim-Lloyd algorithm (HHL) allows for the exponentially faster solution of a system of linear equations. However, this algorithm requires the postselection of an ancilla qubit to obtain the solution. This postselection makes the algorithm result… read more here.
Keywords: harrow hassidim; lloyd algorithm; ancilla; postselection ... See more keywords